TWI389463B - Method and system for a single chip intergrated bluetooth and fm transceiver and baseband processor - Google Patents

Description

Method and system for wireless communication

The present invention relates to Bluetooth and Frequency Modulation (FM) communication techniques, and more particularly to a method and system for implementing a monolithically integrated Bluetooth and FM transceiver and baseband processor.

With the popularity of portable electronic devices and wireless devices that support audio applications, the need to provide a simple and comprehensive audio communication application is increasing. For example, some users may use Bluetooth devices, such as Bluetooth headsets and/or speakers, to freely do other things while transmitting audio material to the corresponding wireless handset. Other users can play the stored audio content and/or receive the audio content by broadcast communication using the portable electronic device it owns.

However, the cost of integrating multiple audio communication technologies into one device is high. Combining multiple different communication services in a single portable electronic device or wireless device requires separate processing hardware and/or separate processing software. Furthermore, coordinating the reception and/or transmission of data in a portable electronic device or wireless device requires a significant amount of processing, which can introduce certain operational constraints and/or design difficulties. For example, portable devices such as cellular telephones incorporating Bluetooth and wireless LAN can create some coexistence issues due to the similarity of Bluetooth and WLAN transceivers.

Furthermore, the simultaneous use of multiple radios in a portable device will significantly increase power consumption. Power supplies are an important component in most wireless mobile devices, and devices incorporating cellular radios, Bluetooth radios, and WLAN radios require careful design and implementation to minimize battery usage. In addition, additional costs, such as complex power monitoring and power management techniques, are required to maximize battery life.

Other limitations and disadvantages of the prior art will be apparent to those of ordinary skill in the art in view of the present invention.

The present invention provides a method and system for implementing a monolithically integrated Bluetooth and FM transceiver and baseband processor, and a detailed description will be given in conjunction with at least one of the figures.

According to an aspect of the present invention, a method of wireless communication is provided, the method comprising: transmitting FM data through an FM radio integrated in a single wafer; transmitting Bluetooth data through a Bluetooth radio integrated in the single wafer; An on-chip processor communicatively coupled to the FM radio and the Bluetooth radio controls the FM data communication and the Bluetooth data communication.

Advantageously, the method further comprises time division multiplexing the processing of said FM material and the processing of said Bluetooth data within said one on-chip processor.

Advantageously, the method further comprises transmitting said FM data out of said single wafer via a digital interface communicatively coupled to said Bluetooth radio, said FM radio and said one on-chip processor.

Advantageously, the method further comprises transmitting additional FM data to said single wafer via said digital interface.

Preferably, the digital interface is a universal serial bus (USB) interface, a secure digital input/output (SDIO) interface, a universal non-synchronous transceiver (UART) interface, and an internally integrated circuit bus (I ² C) interface. One of the PCM interface and internal IC sound (I2S) interface.

Advantageously, the method further comprises transmitting said FM data out of said single wafer via an analog interface communicatively coupled to said FM radio.

Preferably, the single chip operates in one of only the Bluetooth mode, the FM mode only, and the Bluetooth-FM mode.

Advantageously, the method further comprises disabling at least a portion of the Bluetooth radio when the single wafer is operating in the FM only mode.

Advantageously, the method further comprises receiving a radio data system (RDS) material via said FM radio.

Advantageously, the method further comprises transmitting said received RDS material to memory within said single wafer by direct memory access when said on-chip processor is in a standby mode.

Advantageously, the method further comprises modifying an adaptive frequency hopping (AFH) mapping of said transmitted Bluetooth data based on at least one detected wireless local area network (WLAN) channel.

Preferably, the method further comprises disabling the analog circuit within the single wafer when only the digital signal is processed.

According to an aspect of the invention, a machine readable memory is provided, the computer program stored therein comprising at least one code segment for providing wireless communication, the at least one code segment being executed by a machine to cause the machine to perform the following steps : transmitting FM data by an FM radio integrated in a single wafer; transmitting Bluetooth data through a Bluetooth radio integrated in the single chip; and an on-chip processing by communicating with the FM radio and the Bluetooth radio The FM data communication and the Bluetooth data communication are controlled.

Advantageously, said machine readable memory further comprises code for time division multiplexing of processing of said FM material and processing of said Bluetooth data within said one on-chip processor.

Advantageously, said machine readable memory further comprises code for transmitting said FM material out of said single wafer by a digital interface communicatively coupled to said Bluetooth radio, said FM radio and said one on-chip processor .

Advantageously, the machine readable memory further comprises code for transmitting additional FM data to the single wafer via the digital interface.

Preferably, the digital interface is a universal serial bus (USB) interface, a secure digital input/output (SDIO) interface, a universal non-synchronous transceiver (UART) interface, and an internally integrated circuit bus (I ² C) interface. One of the PCM interface and internal IC sound (I2S) interface.

Advantageously, said machine readable memory further comprises code for transmitting said FM material out of said single wafer by an analog interface communicatively coupled to said FM radio.

Preferably, the single chip operates in one of only the Bluetooth mode, the FM mode only, and the Bluetooth-FM mode.

Advantageously, the machine readable memory further comprises code to disable at least a portion of the Bluetooth radio when the single wafer is operating in the FM only mode.

Advantageously, the machine readable memory further comprises code for receiving Radio Data System (RDS) material via the FM radio.

Advantageously, the machine readable memory further comprises code for transferring the received RDS data to memory within the single wafer by direct memory access when the on-chip processor is in a standby mode.

Advantageously, the machine readable memory further comprises code for modifying an adaptive frequency hopping (AFH) mapping of the transmitted Bluetooth data based on at least one detected wireless local area network (WLAN) channel.

Preferably, the machine readable memory further comprises code to disable analog circuits within the single wafer when only digital signals are processed.

According to an aspect of the invention, a wireless communication system is provided, the system comprising: a single wafer comprising an on-chip integrated FM radio, an on-chip integrated Bluetooth radio, and an integrated FM radio and An on-chip processor of an integrated Bluetooth radio communication connection; the on-chip integrated FM radio enables transmission of FM data through the single wafer; the on-chip integrated Bluetooth radio implements FM through the single chip Transmission of data; the on-chip uniprocessor controls the FM data communication and the Bluetooth data communication.

Preferably, the on-chip uniprocessor performs time division multiplexing of processing of the FM material and processing of the Bluetooth data.

Preferably, the single wafer transmits the FM data out of the single wafer through a digital interface communicatively coupled to the on-chip integrated Bluetooth radio, the on-chip integrated FM radio, and the on-chip single processor.

Preferably, the single wafer transfers additional FM data to the single wafer through the digital interface.

Preferably, the digital interface is a universal serial bus (USB) interface, a secure digital input/output (SDIO) interface, a universal non-synchronous transceiver (UART) interface, and an internally integrated circuit bus (I ² C) interface. One of the PCM interface and internal IC sound (I2S) interface.

Preferably, the single wafer transmits the FM data out of the single wafer via an analog interface communicatively coupled to the on-chip integrated FM radio.

Preferably, the single chip operates in one of only the Bluetooth mode, the FM mode only, and the Bluetooth-FM mode.

Preferably, the single wafer disables at least a portion of the on-chip integrated Bluetooth radio when the single wafer is operating in the FM only mode.

Preferably, the on-chip integrated FM radio receives Radio Data System (RDS) data.

Preferably, when the on-chip processor is in the standby mode, the single wafer transfers the received RDS data to the memory within the single wafer by direct memory access.

Advantageously, said single wafer modifies an adaptive frequency hopping (AFH) mapping of said transmitted Bluetooth data based on at least one detected wireless local area network (WLAN) channel.

Preferably, the single wafer disables the analog circuit therein when only the digital signal is processed.

The various advantages, objects, and novel features of the invention, as well as the details of

The present invention provides a method and system for a monolithically integrated Bluetooth and FM transceiver and baseband processor. The single-chip Bluetooth and FM radios provide a common platform for supporting Bluetooth and FM audio. For example, a user may select multiple audio-based services without having to purchase and carry multiple different devices.

The method and system of the present invention includes a single wafer that includes a Bluetooth radio, an FM radio, a processor system, and a Peripheral Transport Unit (PTU). FM data can be received and/or transmitted via an FM radio, and Bluetooth data can be received and/or transmitted via a Bluetooth radio. The FM radio can receive Radio Data System (RDS) data. The PTU supports multiple analog and digital interfaces to provide the flexibility to process data. The processor in the processor system can perform processing of FM data and time division multiplexing of processing of Bluetooth data. The single chip can operate in only FM mode, Bluetooth only mode, and FM-Bluetooth mode. The single chip can reduce power consumption by disabling certain portions of the Bluetooth radio in FM only mode, disabling the analog circuit when performing digital processing, and/or disabling all FM functions in Bluetooth only mode. Communication between the Bluetooth and FM channels can be achieved by the single chip.

1A is a block diagram of an FM transmitter in communication with a handheld device using a single chip integrated with Bluetooth and FM radios, in accordance with one embodiment of the present invention. As shown in FIG. 1A, there are an FM transmitter 102, a cellular phone 104a, a smart phone 104b, a computer 104c, and a device 104d equipped with FM and Bluetooth. The FM transmitter 102 can be part of a radio broadcast station or other broadcast device. Cellular phone 104a, smart phone 104b, computer 104c, and device 104d with FM and Bluetooth each include a single chip 106 with integrated Bluetooth and FM radios to support FM and Bluetooth data communication. The FM transmitter 102 can implement FM audio material communication with the device shown in FIG. 1A by using a single wafer 106. Each device in FIG. 1A may include a listening device 108, such as a speaker, a headset, or an earbud, and/or in communication with the listening device 108.

Cellular phone 104a can receive FM transmit signals from FM transmitter 102. The user of cellular telephone 104a can then hear the transmitted signal through listening device 108. Cellular phone 104a may have a "one-touch" programming feature to extract a particular desired broadcast, such as weather, sports, stock quotes or news. The smart phone 104b can receive FM transmit signals from the FM transmitter 102. The user of smart phone 104b can then hear the transmitted signal through listening device 108.

The computer 104c can be, for example, a desktop computer, a laptop computer, a notebook computer, a tablet, and a PDA. Computer 104c can receive FM transmit signals from FM transmitter 102. The user of computer 104c can then hear the transmitted signal through listening device 108. The computer 104c may be provided with a software function table that sets listening options and enables quick access to favorite options. In one embodiment of the invention, computer 104c may use an atomic clock FM signal for precise timing applications, such as scientific applications. In addition to cellular telephones, smart phones, computing devices, and other devices shown in FIG. 1A, a single wafer 106 can be used in other various devices and/or systems to receive and use Bluetooth and/or FM signals. In one embodiment of the invention, a single-chip Bluetooth and FM radio can be used in a system that includes a WLAN radio. A method and system is disclosed in U.S. Patent Application Serial No. 17116US02, filed on Nov. 22, 2005, including a single-chip Bluetooth and FM radio integrated with a wireless LAN radio. This application is hereby incorporated by reference in its entirety.

1B is a block diagram of an FM receiver in communication with a handheld device using a single chip integrated with Bluetooth and FM radios, in accordance with one embodiment of the present invention. 1B shows an FM receiver 110, a cellular phone 104a, a smart phone 104b, a computer 104c, and a device 104d equipped with FM and Bluetooth. In this regard, the FM receiver 110 can include and/or be in communication with the listening device 108. Devices with Bluetooth and FM transceivers, such as a single chip 106, are capable of broadcasting their respective signals to the "deadband" of the FM receiver for use by the associated audio system. For example, a cellular or smart phone, such as cellular telephone 104a and smart phone 104b, can transmit a telephone call by using the dead zone of the car FM experience system for listening through the car's audio system. The advantage of this feature is versatility and can be used in all simple vehicles equipped with FM radios with other external FM transmitters or connections.

In another example, a computer, such as computer 104c, may have an MP3 player or other digital music format player and may broadcast signals to the live band of the FM receiver of the home audio system. Then, the music played on the computer can be listened to on a standard FM receiver with other external FM transmission devices or connections. In addition to the cellular telephones, smart phones, and computing devices shown in the figures, a single chip incorporating Bluetooth and FM transceivers and/or receivers can also be used in a variety of other devices and/or systems that receive and use FM signals.

1C is a block diagram of a single chip integrated with Bluetooth and FM radio and supporting FM processing and an external device supporting Bluetooth processing, in accordance with one embodiment of the present invention. Figure 1C shows a single chip 112a and external device 114 that support Bluetooth and FM radio operation. The single chip 112a may include an integrated Bluetooth radio 116, an integrated FM radio 118, and an integrated processor 120. Bluetooth radio 116 may include appropriate logic, circuitry, and/or code to enable Bluetooth signal transmission over single chip 112a. In this regard, the Bluetooth radio 116 can support audio signals or transmissions. The FM radio can include appropriate logic, circuitry, and/or coding to enable FM signal transmission over the single wafer 112a.

The integrated processor 120 may include appropriate logic, circuitry, and/or coding to enable processing of FM data received by the FM radio 118. In addition, integrated processor 120 also processes FM data transmitted by FM radio 118 when FM radio 118 has transmission capability. The external device 114 can include a baseband processor 122. The baseband processor 122 may include appropriate logic, circuitry, and/or code to enable processing of Bluetooth data received by the Bluetooth radio 116. In addition, the baseband processor 122 can process Bluetooth data to be transmitted by the Bluetooth radio 116. In this regard, the Bluetooth radio 116 can communicate with the baseband processor 122 via the external device 114. The Bluetooth radio 116 can communicate with the integrated processor 120.

1D is a block diagram of a single chip integrated with Bluetooth and FM radios and an external device supporting Bluetooth and FM processing in accordance with one embodiment of the present invention. Figure 1D shows a single chip 112b and external device 114 that support Bluetooth and FM radio operation. The single chip 112b can include a Bluetooth radio 116 and an FM radio 118. Bluetooth radio 116 and/or FM radio 118 may be integrated within single wafer 112b. The external device 114 can include a baseband processor 122. The baseband processor 122 may include appropriate logic, circuitry, and/or code to process Bluetooth data received by the Bluetooth radio 116 and/or process Bluetooth data to be transmitted by the Bluetooth radio 116. In this regard, the Bluetooth radio 116 can communicate with the baseband processor 122 via the external device 114. In addition, baseband processor 122 may include appropriate logic, circuitry, and/or code to implement processing of FM data received by FM radio 118. When the FM radio 118 has transmission capability, the baseband processor 122 can process the FM data to be transmitted by the FM radio 118. In this regard, FM radio 118 can communicate with baseband processor 122 via external device 114.

1E is a block diagram of a single wafer having a plurality of integrated radio devices supporting radio data processing, in accordance with one embodiment of the present invention. A single wafer 130 including a radio portion 132 and a processing portion 134 is shown in FIG. 1E. The radio portion 132 can include a plurality of integrated radios. For example, the radio portion 132 may include a cellular radio 140a that supports cellular communication, a Bluetooth radio 140b that supports Bluetooth communication, an FM radio 140c that supports FM communication, a GPS 140 that supports Global Positioning System (GPS), and/or support based on IEEE. Wireless Local Area Network (WLAN) 140e for 802.11 standard communication.

Processing portion 134 can include at least one processor 136, memory 138, and peripheral transmission unit (PTU) 140. Processor 136 may include appropriate logic, circuitry, and/or code to process the data received by radio portion 132. In this regard, each integrated radio can communicate with processing portion 134. In some examples, the integrated radio can communicate with the processing portion 134 via the generic data bus. Memory 138 may include appropriate logic, circuitry, and/or code to enable storage of material used by processor 136. In this regard, memory 138 can store at least a portion of the material received by at least one integrated radio in radio portion 132. Moreover, memory 138 can store at least a portion of the material transmitted by at least one integrated radio in radio portion 132. PTU 140 may include appropriate logic, circuitry, and/or coding to enable interaction between data within single wafer 130 and other devices that are communicatively coupled to single wafer 130. In this regard, the PTU 140 can support analog and/or digital interfaces.

1F is a block diagram of a single wafer integrated with Bluetooth and FM radios and supporting multiple interfaces, in accordance with one embodiment of the present invention. Figure 1F shows a single wafer 150 supporting Bluetooth and FM radio communication. The single chip 150 includes a processor and memory module 152, a PTU 154, an FM control and input-output (IO) module 156, a Bluetooth radio 158, a Bluetooth baseband processor 160, and FM and Radio Data System (RDS) and radio. Broadcast Data System (RDBS) radio 162. The first antenna or antenna system 166a is communicatively coupled to the Bluetooth radio 158. The second antenna or antenna system 166b is communicatively coupled to the FM and RDS/RBDS radios 162.

The processor and memory module 152 can include appropriate logic, circuitry, and/or code for implementing control, management, data processing operations, and/or data storage operations. PTU 154 may include appropriate logic, circuitry, and/or coding to enable inter-chip 150 interaction with external devices. The FM control and IO module 156 may include appropriate logic, circuitry, and/or coding to enable control of at least a portion of the FM and RDS/RDBS radios 162. Bluetooth radio 158 may include appropriate logic, circuitry, and/or code to enable Bluetooth communication via first antenna 166a. The FM and RDS/RBDS radios 162 may include appropriate logic, circuitry, and/or coding to enable FM, RDS, and/or RBDS data transmission via the second antenna 166b. The Bluetooth baseband processor 160 may include appropriate logic, circuitry, and/or code to enable processing of baseband data received from the Bluetooth radio 158, or processing of baseband data to be transmitted by the Bluetooth radio 158.

The PTU 154 supports multiple interfaces. For example, the PTU 154 can support an external memory interface 164a, a universal non-synchronous transceiver (UART), and/or an enhanced serial peripheral interface (eSPI) interface 164b, a general purpose input/output (GPIO) and/or clock interface 164c, pulse coding. Modulation (PCM) and/or internal IC sound (I ² S) interface 164d, internal integrated circuit (I ² C) data bus interface 164e and/or audio interface 164f.

1G is a block diagram of a single wafer integrated with Bluetooth and FM radios and supporting interaction with a handheld baseband device and a coexisting wireless LAN, in accordance with one embodiment of the present invention. 1G shows a single wafer 172, a handset baseband module 170, a bandpass filter (BPF) 174, a first antenna or antenna system 178a, a matching circuit 176, a second antenna or antenna filter 178b, and a WLAN radio. 180. Single wafer 172 is similar to single wafer 150 in Figure 1F. In this example, the single chip 172 includes appropriate logic, circuitry, and/or code that can be coexistent with the WLAN radio 180 via the coexistence interface 186.

The single chip 172 can transmit Bluetooth data through the BPF 174 and the first antenna 178a. The single chip 172 can also transmit FM data through the matching circuit 176 and the second antenna 178b. The single chip 172 can communicate with the WLAN radio 180 via the coexistence interface 186 in the presence of a WLAN channel to coordinate the transmission of Bluetooth data.

The single chip 172 can transmit data to the handset baseband module 170 via at least one interface, such as a PCM/I2S interface 182a, a UART/eSPI interface 182b, an I ² C interface 182c, and/or an analog audio interface 182d. The single chip 172 and the handset baseband module 170 can also communicate via at least one control signal. For example, the handset baseband module 170 can generate a clock signal ref_clock 184a, a wake-up signal host_wake 184c, and/or a reset signal 184f for transmission to the single chip 172. Similarly, the single chip 172 can generate a clock request signal clock_req 184b, a Bluetooth wake-up signal BT_wake 184d, and/or an FM interrupt request signal FM IRQ 184e for transmission to the handset baseband module 170. The handset baseband module 170 can include appropriate logic, circuitry, and/or code to process at least a portion of the data received from the single wafer 172 and/or the material to be transferred to the single wafer 172. In this regard, the handset baseband module 170 can transmit data to the single wafer 172 via at least one interface.

2A is a block diagram of a single wafer that supports Bluetooth and FM operation with an external FM transmitter, in accordance with one embodiment of the present invention. 2A shows a single die 200 including a processor system 202, a peripheral transmission unit (PTU) 204, a Bluetooth core 206, a frequency modulation (FM) core 208, and a common bus bar 201. The FM transmitter 226 may be an external device of the single wafer 200 and may be communicatively coupled to the single wafer 200 by, for example, an FM core 208. The FM transmitter 226 can be a separate integrated circuit (IC).

The processor system 202 can include a central processing unit (CPU) 210, a memory 212, a direct memory access (DMA) controller 214, a power management unit (PMU) 216, and an audio processing unit (APU) 218. APU 218 may include a subband coding (SBC) codec 220. At least a portion of the components of processor system 202 are communicatively coupled by a common bus bar 201.

CPU 210 may include appropriate logic, circuit cores/or code to enable control and management operations within a single wafer 200. In this regard, CPU 210 may communicate control and/or management operations to Bluetooth core 206, FM core 208, and/or PTU 204 via a set of register addresses specified in the memory map. Additionally, CPU 210 can be used to process data received by single wafer 200 and/or process data to be transmitted by single wafer 200. The CPU 210 can process the data received through the Bluetooth core 206, the FM core 208, and/or the PTU 204. For example, the CPU 210 can process the A2DP data and then transfer the processed A2DP data to other components within the single wafer 200 through the common bus 201. In this regard, the CPU can encode and/or decode the A2DP data using the SBC codec 220 in the APU 218. The CPU 210 can process the data to be transmitted through the Bluetooth core 206, the FM core 208, and/or the PTU 204. CPU 210 may be, for example, an ARM processor or other embedded processor core for a system on a chip (SOC) architecture.

The CPU 210 can perform time division multiplexing on Bluetooth data processing operations and FM data processing operations. In this regard, the CPU 210 can perform each operation using the local clock, that is, perform Bluetooth data processing based on the Bluetooth clock, and perform FM data processing based on the FM clock. The Bluetooth clock and FM clock can be different and do not affect each other. The CPU 210 can gate the FM clock and the Bluetooth clock and select an appropriate clock according to a time division multiplexing arrangement or arrangement. When the CPU 210 transitions between Bluetooth operation and FM operation, at least some of the states associated with Bluetooth operation or FM operation may remain until the CPU 210 transitions back to the original state.

For example, in the event that the Bluetooth function is not activated and is not expected to be initiated for a certain period of time, the CPU 210 can operate on the clock generated by the FM core 208. This eliminates the need to introduce a separate high speed clock when there is already a high speed clock in the FM core 208. In the case where the Bluetooth core 206 can be activated, the processor can choose to use a clock generated separately from the FM core 208 when the Bluetooth core is in a power save mode that requires periodic activation. The clock can be generated directly from the quartz or crystal input of the Bluetooth core 206 or from a phase locked loop (PLL) within the Bluetooth core 206. While such clocking techniques may provide particular flexibility to the processing operations performed by CPU 210 in a single wafer 200, other clocking techniques may be used.

CPU 210 may also enable configuration of data routes to and/or from FM core 208. For example, CPU 210 can configure FM core 208 so that data can be routed through the I ² S interface or PCM interface in PTU 204 to an analog port that is in communication with PTU 204.

The CPU 210 can implement tuning (e.g., flexible tuning) and search operations within Bluetooth and/or FM communications by controlling at least a portion of the Bluetooth core 206 and/or the FM core 208. For example, CPU 210 may generate at least one signal to tune FM core 208 to a particular frequency to determine if there is a station at that frequency. If a station is found, the CPU 210 can configure a channel to process the audio signal within the single wafer 200. If no station is found, the CPU 210 can generate at least one additional signal to tune the FM core 208 to a different frequency and determine if there is a station on the new frequency.

The search algorithm may cause the FM core 208 to scan up or down in the frequency domain from the currently tuned signal and stop at the next channel with a Received Signal Strength Indicator (RSSI) that exceeds the threshold. The search algorithm is capable of identifying image channels. The selection of the IF frequency during the search causes the image channel to have a nominal frequency error of 50 kHz for distinguishing the image channel from the "on" channel. The search algorithm can also determine whether high-side or low-side injection provides better reception performance, thereby improving signal quality metrics for this purpose. One possibility, though studied, is to monitor the high frequency RSSI relative to the total RSSI. The selected IF allows the receiver to provide a certain timing accuracy such that the image channel is large enough to distinguish it from the on channel.

The CPU 210 implements a Bluetooth host controller interface (HCI). At this point, HCI provides a command interface to the baseband controller and link manager and access to the hardware status and control registers. The HCI can provide a method of accessing the Bluetooth baseband capacity supported by the CPU 210.

Memory 212 includes appropriate logic, circuitry, and/or code for data storage. In this regard, memory 212 can be used to store material used by processor system 202 to control and/or manage the operation of single wafer 200. The memory 212 can also be used to store data received by the single wafer 200 through the PTU 204 and/or through the FM core 208. Likewise, memory 212 can be used to store material to be transmitted by single wafer 200 through PTU 204 and/or FM core 208. The DMA controller 214 includes appropriate logic, circuit cores/or code that can be directly transferred to and from the memory via the public bus 201 without the involvement of the CPU 210 operation.

PTU 204 may include appropriate logic, circuitry, and/or coding to enable communication of a single wafer 200 through multiple communication interfaces. In some examples, PTU 204 can be implemented external to single wafer 200. The PTU 204 can support analog and/or digital communication through at least one port. For example, the PTU 204 can support at least one universal serial data bus (USB) interface for Bluetooth data communication, at least one secure digital input/output (SDIO) interface for Bluetooth data communication, and at least one for Bluetooth data communication. A Universal Non-Synchronous Transceiver (UART) interface and at least one I ² C bus interface for FM control and/or FM and RDS/RBDS data communication. The PTU 204 can also support at least one PCM interface for Bluetooth data communication and/or FM data communication.

The PTU 204 can also support at least one I ² S interface. The I ² S interface is used to transmit high fidelity FM digital signals to the CPU 210 for processing. In this regard, the I ² S interface in the PTU 204 can receive data from the FM core 208 via the bus 203. In addition, the I ² S interface can send high fidelity audio via Bluetooth. For example, the A2DP specification supports wideband voice using 16 kHz audio. In this regard, the I ² S interface can be used for Bluetooth hi-fi data transmission and/or FM high fidelity data transmission. The I ² S interface can be a bidirectional interface and can be used to support bidirectional communication between the PTU 204 and the FM core 208 via the bus 203. The I ² S interface can be used to transfer I ² S data from external devices such as encoders/decoders (CODECs) and/or for further transmission (eg local transmission to speakers and/or headphones and/or far from cellular networks) Other devices that transmit) receive and receive FM data.

Bluetooth core 206 may include appropriate logic, circuitry, and/or coding to enable reception and/or transmission of Bluetooth data. The Bluetooth core 206 can include a Bluetooth transceiver 229 that performs the reception and/or transmission of Bluetooth data. In this regard, the Bluetooth core 206 can support amplification, filtering, modulation, and/or demodulation operations. Bluetooth core 206 may implement data transfer from and/or to processor system 202, PTU 204, and/or FM core 208 through utility bus 201.

The FM core 208 may include appropriate logic, circuitry, and/or coding to enable reception and/or transmission of FM data. The FM core 208 can include an FM receiver 222 and a local oscillator (LO) 227. The FM receiver 222 can include an analog to digital (A/D) converter 224. The FM receiver 222 can support amplification, filtering, and/or demodulation operations. The LO 227 can be used to generate reference signals for use by the FM core 208 to perform analog and/or digital operations. The FM core 206 can implement data transfer from the public bus 201 and/or to the processor system 202, the PTU 204, and/or the Bluetooth core 206. In addition, FM core 208 can receive analog FM data via FM receiver 222. The A/D converter 224 within the FM receiver 222 is used to convert the analog FM data into digital FM data for processing by the FM core 208. The FM core 208 can also send digital FM data to the FM transmitter 226. The FM transmitter 226 includes a digital to analog (D/A) conversion 228 for converting digital FM data into analog FM data for transmission by the FM transmitter 226. The data received by the FM core 208 may be routed out of the FM core 208 core in a digital format via the public bus 201 and/or routed through the bus 203 to the I ² S interface in the PTU 204 in an analog format.

The FM core 208 can implement radio transmission and/or reception at various frequencies, such as 400 MHz, 900 MHz, 2.4 GHz, and/or 5.8 GHz. The FM core 208 also supports operation under standard FM band, including the 76MHz to 108MHz range.

The FM core 208 can also enable receipt of RDS data and/or RBDS data from the onboard radio receiver. In this regard, the FM core 208 can implement filtering, amplification, and/or demodulation of the received RDS/RBDS data. The RDS/RBDS data may include, for example, a Traffic Information Channel (TMC) that provides traffic information that can be transmitted and/or displayed to the in-vehicle user.

The digital circuitry within FM core 208 can operate based on a clock signal generated by segmenting the signal generated by LO 227. The LO 227 can be programmed in accordance with various channels received by the FM core 208, and the split ratio can be varied to maintain the digital clock signal close to a nominal value.

The RDS/RBDS data can be cached in the memory 212 of the processor system 202. When the CPU 210 is in the sleep mode or the standby mode, the RDS/RBDS data can be transferred from the memory 212 through the I ² C interface. For example, the FM core 208 can store the RDS data in a buffer within the memory 212 until a certain level is reached, and generate an interrupt wake-up CPU 210 to process the RDS/RBDS data. When the CPU 210 is not in the sleep mode, the RDS data can be transferred to the memory 212 through the public bus 201.

In addition, the RDS/RBDS data received by the FM core 208 can be transmitted to any port that is communicatively coupled to the PTU 204 by the HCI scheme supported by the single chip 200. The RDS/RBDS data can also be transmitted to the Bluetooth core 206 for transmission to Bluetooth enabled devices.

In one embodiment of the invention, the single chip 200 can receive FM audio material through the FM core 208 and transmit the received data to the Bluetooth core 206 via the public bus 201. The Bluetooth core 206 can transmit data to the processor system 202 for processing. In this regard, the SBC codec 220 in the APU 218 can perform SBC encoding or other A2DP compliant audio encoding for transmission of FM material over the Bluetooth A2DP link. Processor system 202 may also perform continuous variable slope increment (CVSD) modulation, log PCM modulation, and/or other Bluetooth speech coding for Bluetooth Synchronous Connection Oriented (SCO) or Extended SCO (eSCO) chains. Transfer FM data on the road. The Bluetooth encoded FM audio material can be transmitted to the Bluetooth core 206 and then transmitted to other devices that support the Bluetooth protocol. The CPU 210 can be used to control and/or manage various data transfer and/or processing operations within the single wafer 200 to support FM audio data transmission over Bluetooth protocols.

In addition, after receiving Bluetooth data such as A2DP, SCO, eSCO, and/or MP3, the Bluetooth core 206 can transmit the received data to the processor system 202 via the public bus 201. At processor system 202, SBC codec 220 decodes the Bluetooth data and transmits the decoded data to FM core 208 via public bus 201. The FM core 208 transmits the data to the FM transmitter 226 for transmission to an FM receiver in another device.

In another embodiment of the invention, the single wafer 200 can operate in multiple modes. For example, the single chip 200 can operate in one of only FM mode, Bluetooth only mode, and FM-Bluetooth mode. In FM-only mode, single-chip 200 operates at a lower power activity than Bluetooth-only or FM-Bluetooth mode because FM operation of some devices consumes only a limited amount of power. In this regard, during the FM only mode, at least a portion of the operation of the Bluetooth core 206 will be disabled to reduce the power consumption of the single chip 200. Moreover, at least a portion of processor system 202, such as CPU 210, can operate based on a split clock from a phase locked loop (PLL) in FM core 208. In this regard, the PLL in the FM core 208 can use the LO 227.

In addition, because the encoding necessary to perform certain FM operations (such as tuning and/or searching) requires only a small number of instructions to be executed within a time interval, such as 10 ms, the CPU 210 can be placed in standby or sleep mode to reduce power consumption, Until the next set of instructions is executed. In this regard, each set of instructions in the FM opcode can be referred to as a code segment or a base sequence. This code segment can be selected or segmented in a very structured manner during FM mode only operation to optimize the power consumption of the single wafer 200. In some cases, segmentation may also be performed in FM-Bluetooth mode so that when the FM core 208 is performing tuning and/or search operations, the CPU 210 may provide more processing power for Bluetooth operation.

2B is a block diagram of a single wafer supporting Bluetooth and FM operation of an integrated FM transmitter in accordance with one embodiment of the present invention. 2B shows a single wafer 200 as shown in FIG. 2A with an FM transmitter 226 integrated into the FM core 208. In this regard, the FM core 208 can support the reception and/or transmission of FM data. The FM transmitter 226 can use a signal generated based on a reference signal generated by the LO 227. The FM core 208 can implement transmission of data received through the PTU 204 and/or the Bluetooth core 206. The single wafer 200 as shown in FIG. 2B can support FM reception and/or transmission as well as Bluetooth reception and/or transmission.

2C is a flow diagram of processing received data in a single wafer integrated with Bluetooth and FM radios in accordance with one embodiment of the present invention. As shown in Figures 2A and 2C, after starting step 230, in step 232, FM core 208 or Bluetooth core 206 receives the data. For example, FM core 208 receives FM data through FM receiver 222, which receives Bluetooth data through Bluetooth transceiver 229. In step 234, the received data is transmitted to the processor system 202 via the public bus 201 for processing. The received data can be transmitted to the memory 212 by the DMA controller 214. In some cases, processor system 202 can then transmit the data to PTU 204. The received data may be transmitted to processor system 202 in accordance with a time division multiplexing scheme or configuration provided by processor system 202. In step 236, the processor system 202 can time-multiplex the processing of the FM data and the processing of the Bluetooth data. For example, when Bluetooth data is being processed, the FM data is not transmitted to processor system 202, or transmitted and stored in memory 212 until FM processing is initiated. When the processor system 202 completes the processing of the Bluetooth data, the FM data can be transmitted to the processor system 202 for FM processing. Likewise, when the FM material is being processed, the Bluetooth data is not transmitted to the processor system 202 or transmitted and stored in the memory 212 until Bluetooth processing is initiated. When the processor system 202 completes the FM data processing, the Bluetooth data can be transmitted to the processor system 202 for Bluetooth processing. After step 236, processing proceeds to end step 238.

2D is a flow diagram of processing FM data through a Bluetooth core in a single chip integrated with Bluetooth and FM radios, in accordance with one embodiment of the present invention. As shown in FIGS. 2A and 2D, after starting step 250, in step 252, the FM core 208 receives the FM data through the FM receiver 222. In step 254, the FM core 208 transmits FM data to the Bluetooth core 206 via the public bus 201. In step 256, the Bluetooth core 206 transmits the FM data received from the FM core 208 to the processor system 202 via the public bus. In step 258, processor system 202 performs a Bluetooth processing operation, such as a decoding operation, on the FM material received from Bluetooth core 206. In step 260, the Bluetooth core 206 receives the processed FM data. In step 262, the Bluetooth core 206 transmits the processed FM data to the at least one Bluetooth device via the Bluetooth transceiver 229.

One scenario in which the steps shown in Figure 2D occur is that the handset can work with the Bluetooth headset when the handset is activated to receive FM material. In this regard, the handset can receive the FM audio signal through the FM core 208 and process the received signal and then transmit it to the headset via the Bluetooth core 206.

2E is a flow diagram of configuring a single wafer integrated with Bluetooth and FM radios based on an operational mode, in accordance with one embodiment of the present invention. As shown in FIG. 2E, after starting step 270, in step 272, when the single chip integrated with the Bluetooth and FM radios operates in the FM only mode, the flow jumps to step 284. In step 284, the FM core 208 is configured to perform operations while disabling at least a portion of the Bluetooth core 206. In step 286, the received FM data and/or FM data to be transmitted may be processed in processor system 202 without the need to perform time division multiplexing.

Returning to step 272, when the single chip does not operate in the FM only mode, the flow jumps to step 274. In step 274, when the single chip is operating in Bluetooth only mode, the flow jumps to step 280. In step 280, the Bluetooth core 206 is configured to perform operations while disabling at least a portion of the FM core 208. In step 282, the received Bluetooth data and/or Bluetooth data to be transmitted may be processed in processor system 202 without the need to perform time division multiplexing.

Returning to step 274, when the single chip does not operate in Bluetooth only mode, the flow jumps to step 276. In step 276, the Bluetooth core 206 and FM core 208 are configured to perform operations. In step 278, Bluetooth data and/or FM data is processed in processor system 202 in accordance with a time division multiplex arrangement or arrangement.

3 is a block diagram of an FM core and peripheral transmission unit (PTU) for processing RDS and digital audio material in accordance with one embodiment of the present invention. A more detailed portion of the single wafer 200 depicted in Figures 2A-2B is shown in Figure 3. A portion of the single wafer 200 shown in FIG. 3 includes an FM core 208, a memory 212, a CPU 210, and a common bus bar 201. Also shown is a portion of PTU 204, including interface multiplexer 310, universal peripheral interface (UPI) 304, bus master interface 302, digital audio interface controller 306, I ² S interface module 308, and I ² C. Interface module 312. The FM core 208 includes an FM/MPX demodulator and decoder 317, a rate adapter 314, a buffer 316, an RDS/RBDS demodulator and decoder 318, and a control register module 322. The narrow fill arrow shown by data flow arrow 332 represents the digital audio data flow. The wide fill arrow shown by data flow arrow 334 represents the RDS/RBDS data flow. The open arrow shown by the two-way data flow arrow 336 represents the control data flow.

The FM/MPX demodulator and decoder 317 includes appropriate logic, circuitry, and/or code for processing FM and/or FMMPX live audio and audio. The FM/MPX demodulator and decoder 317 can demodulate and/or decode the audio signals that will be transmitted to the rate adapter 314. The FM/MPX demodulator and decoder 317 can demodulate and/or decode the signals to be transmitted to the RDS/RBDS demodulator and decoder 318. Rate adapter 314 includes appropriate logic, circuitry, and/or coding to control the rate at which FM data is received from FM/MPX demodulator and decoder 317. When the FM data is transmitted using the digital audio interface, the rate adapter 314 can match the output sampling of the video path to the sampling clock of the host device or the rate of the remote device. An initial rough estimate of the adaptive fractional change can be made, which is then refined by monitoring the read/write rate ratio and/or by monitoring the audio sample level in the output buffer. The rate can be adjusted in a feedback manner to maintain the level of the output buffer. The rate adapter 314 can receive a strobe or pull signal from the digital audio interface controller 306. Audio FM data from rate adapter 314 can be transmitted to cache 316. A method and system including a rate adapter is disclosed in U.S. Patent Application Serial No. 11/176,417, the entire disclosure of which is incorporated herein by reference.

Cache 316 includes appropriate logic, circuitry, and/or coding to enable storage of digital audio material. The cache 316 can receive a strobe or pull signal from the digital audio interface controller 306. The cache 316 can transmit digital audio material to the digital audio interface controller 306. The digital audio interface controller 306 can include appropriate logic, circuitry, and/or code to transmit digital audio material to the bus master interface 302 and/or the I ² S interface module 308. The I ² S interface 308 can include appropriate logic, circuitry, and/or code to communicate digital audio material to at least one device communicatively coupled to the single chip. The I ² S interface 308 can communicate control data with the bus master interface 302.

The RDS/RBDS demodulator and decoder 318 may include appropriate logic, circuitry, and/or coding to process RDS/RBDS data from the FM/MPX demodulator and decoder 317. The RDS/RBDS demodulator and decoder 318 can further demodulate and/or decode the data received from the FM/MPX demodulator and decoder 317. The output of the RDS/RBDS demodulator and decoder 318 is transmitted to the interface multiplexer 310. Interface multiplexer 310 may include appropriate logic, circuitry, and/or code to transmit RDS/RBDS data to UPI 304 and/or I ² C interface module 312. In this regard, UDI 304 can generate a signal indicating the interface selected by interface multiplexer 310. The I ² C interface 312 can include appropriate logic, circuitry, and/or code to communicate RDS/RBDS data to at least one device communicatively coupled to the single chip. The I ² C interface 312 can also transfer control data between the external device of the single chip and the interface multiplexer 310. In this regard, interface multiplexer 310 can transfer control data between I ² C interface 312, UPI 304, and/or control register module 322 in FM core 208. Control register 322 may include appropriate logic, circuitry, and/or code for storing register information for controlling and/or configuring the operation of at least a portion of FM core 208.

The UPI 304 may include appropriate logic, circuitry, and/or code to transmit digital audio material from the interface multiplexer 310 to the bus master interface 302. The UPI 304 also enables the transfer of control data between the bus master interface 302 and the interface multiplexer 310. Bus interface 302 may include appropriate logic, circuitry, and/or code to enable transmission of control data, digital audio data, and/or RDS/RBDS data between portion PTU 204 and public bus 201 shown in FIG. The bus master interface 302 can transmit digital audio data and/or RDS/RBDS data to the public bus 201. The RDS/RBDS data can be transferred to the memory 212. In some examples, the RDS/RBDS data is transmitted to the memory 212 when the CPU 210 is in the standby or sleep mode. The bus master interface 302 can store the RDS/RBDS data in the buffer of the memory 212 or read the RDS/RBDS data from the buffer of the memory 212. The digital audio material can be transmitted to the CPU 210 for processing. The CPU 210 can generate and/or receive control material for transmission over the public bus 201 and the PTU 204 and/or FM core 208.

In one embodiment of the invention, a single chip integrated with FM and Bluetooth radios can perform a search algorithm that collects and stores data during the scanning of the FM band. The single wafer determines if music or speech is present in the detected channel. In addition, the single chip can search for and find the 10 most powerful stations and sort them.

In another embodiment of the invention, a single chip integrated with FM and Bluetooth radios can perform a search algorithm that performs searches based on specific criteria such as station type or music type. The single wafer can characterize each station found in the search.

In another embodiment of the present invention, a single chip integrated with FM and Bluetooth radios can turn off the voltage regulator of the FM radio when operating in Bluetooth only mode, or turn off the Bluetooth radio when neither Bluetooth nor FM is used. A voltage regulator for both the device and the FM radio. In another embodiment of the present invention, a single wafer integrated with FM and Bluetooth radios can extend the life of the battery in the portable device by requiring the single chip to consume no power prior to being configured by the host. In addition, there is no load in the system after the single wafer is powered down, and/or there is no current on the wafer when power is lost.

In another embodiment of the invention, a single chip integrated with FM and Bluetooth radios can use a digital filter to combine de-emphasis, bass and/or treble. For example, the digital filter has a programmable audio bandwidth. In another embodiment of the invention, a single chip integrated with FM and Bluetooth radios can be dynamically bypassed using a power amplifier of a first type of system. In another embodiment of the invention, a single wafer integrated with FM and Bluetooth radios can use an antenna with an adjustable center frequency.

In another embodiment of the invention, a single chip integrated with FM and Bluetooth radios enables Bluetooth and WLAN coexistence. At this point, coexistence can be supported when the energy radiation is not greater than a certain threshold. In some cases, the threshold may be 90 dBm. Achieving coexistence minimizes energy from the Bluetooth radio to the WLAN radio. In this regard, the single chip may use a "guilty by association" technique to identify WLAN interference channels adjacent to Bluetooth devices. Because WLAN channels will deteriorate rapidly as Bluetooth communication occurs, the "guilty contact" technique can quickly determine or identify which adaptive frequency hopping (AFH) channel should be masked to limit the impact of Bluetooth communication on the WLAN channel. Channel measurement statistics can be collected in a "bucket" of N MHz, where N = 2, 3, 4, etc., and if any K channels in the bucket are measured as bad, then the entire bucket is considered bad, for example, When K=1. It is assumed that the entire barrel is bad, that is, "guilty contact", which increases the reliability and speed of the adjacent 20~22MHz WLAN channel that is masked out of the AFH channel mapping table. The use of the technique of modifying the AFH channel mapping table is not limited to the case where the Bluetooth radio and the FM radio are integrated on one wafer. The modification of the AFH channel mapping table can also be applied to the case where the Bluetooth application coexists with the WLAN application.

The WLAN interference channel can be detected by using channel measurement statistics, such as Received Signal Strength Identification Word (RSSI) energy measurements and/or Packet Error Rate (PER) measurements. PER measurements include packet loss due to synchronization errors, loop redundancy check (CRC) errors when decoding the header, and/or CRC errors when decoding the payload. These measurements can be performed during the Bluetooth frame period (1.25ms) on the current Bluetooth channel or on a different channel than the current Bluetooth channel.

In another embodiment of the present invention, a single chip integrated with FM and Bluetooth radios enables a low noise FM phase-locked loop (PLL) that minimizes 32 KHz clock noise and/or large phase noise that may occur. At this point, the FM PLL can use a narrow loop bandwidth.

In another embodiment of the invention, a single chip integrated with FM and Bluetooth radios can disable at least a portion of the analog circuitry in the FM radio and/or Bluetooth radio when performing digital processing. Disabling the analog circuit reduces the power consumption of the single chip.

In another embodiment of the invention, a single chip integrated with FM and Bluetooth radios can support high definition (HD) radio systems. In HD radio systems, broadcasters can use digital signals to transmit existing analog AM and FM signals. At this point, analog AM and FM signals can be transmitted simultaneously, and the use of digital channels produces high quality audio and stronger signals. In the first generation HD radio system, services such as a main program service or a base station reference service may be provided. Other services supported by HD radio in a single chip can be used for audio presentation of news, weather forecasts, entertainment, and/or stock quotes. Additional services include navigation products or applications such as traffic information, delayed listening, mobile commerce and advertising, Internet-based broadcasts, and/or reading services for the visually impaired.

Therefore, the present invention can be realized by hardware, software, or a combination of soft and hard. The invention can be implemented in a centralized fashion in at least one computer system or in a decentralized manner by different portions of the computer system distributed across several interconnects. Any computer system or other device that can implement the method is applicable. A combination of commonly used hardware and software may be a general-purpose computer system with a computer program installed to control the computer system by installing and executing the program to operate as described. In a computer system, the method is implemented using a processor and a storage unit.

The present invention can also be implemented by a computer program product containing all of the features of the method of the present invention which, when installed in a computer system, can be implemented by operation. The computer program in this document refers to any expression of a set of instructions that can be written in any programming language, code, or symbol. The instruction set enables the system to have information processing capabilities to directly implement specific functions, or to perform Specific functions are implemented after one or two steps: a) conversion to other languages, codes or symbols; b) reproduction in a different format.

The present invention has been described in terms of several specific embodiments, and it will be understood by those skilled in the art In addition, various modifications may be made to the invention without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments disclosed, but all the embodiments falling within the scope of the appended claims.

FM transmitter. . . 102

Cellular phone. . . 104a

Smart phone. . . 104b

computer. . . 104c

FM and Bluetooth devices are available. . . 104d

Single chip. . . 106

Listening equipment. . . 108

FM receiver. . . 110

Single chip. . . 112a

Single chip. . . 112b

external device. . . 114

Bluetooth radio. . . 116

FM radio. . . 118

processor. . . 120

Baseband processor. . . 122

Single chip. . . 130

Radio section. . . 132

Processing part. . . 134

processor. . . 136

Memory. . . 138

Peripheral transmission unit (PTU). . . 140

Cellular radio. . . 140a

Bluetooth radio. . . 140b

FM radio. . . 140c

Support GPS for Global Positioning System (GPS). . . 140d

Wireless local area network (WLAN) supporting communication based on the IEEE 802.11 standard. . . 140e

Single chip. . . 150

Memory module. . . 152

Peripheral transmission unit (PTU). . . 154

FM control and input-output (IO) modules. . . 156

Bluetooth radio. . . 158

Bluetooth baseband processor. . . 160

FM and Radio Data System (RDS) and Radio Broadcast Data System (RDBS) radios. . . 162

External memory interface. . . 164a

Universal Non-Synchronous Transceiver (UART) and/or Enhanced Serial Peripheral Interface (eSPI) interface. . . 164b

General purpose input/output (GPIO) and/or clock interface. . . 164c

Pulse code modulation (PCM) and / or internal IC sound (I ² S) interface. . . 164d

Internal integrated circuit (I ² C) data bus interface. . . 164e

Audio interface. . . 164f

The first antenna or antenna system. . . 166a

Second antenna or antenna system. . . 166b

Mobile phone baseband module. . . 170

Single chip. . . 172

Bandpass filter (BPF). . . 174

Matching circuit. . . 176

The first antenna or antenna system. . . 178a

Second antenna or antenna filter. . . 178b

WLAN radio. . . 180

Pulse code modulation (PCM) and / or internal IC sound (I ² S) interface. . . 182a

Universal Non-Synchronous Transceiver (UART) and/or Enhanced Serial Peripheral Interface (eSPI) interface. . . 182b

Internal integrated circuit (I ² C) interface. . . 182c

Analog audio interface. . . 182d

Clock signal ref_clock. . . 184a

Clock request signal clock_req. . . 184b

Wake up signal host_wake. . . 184c

Bluetooth wake-up signal BT_wake. . . 184d

FM interrupt request signal FM IRQ. . . 184e

Reset signal. . . 184f

Coexistence interface. . . 186

Single chip. . . 200

Common bus. . . 201

Processor system. . . 202

Busbars. . . 203

Peripheral transmission unit (PTU). . . 204

Bluetooth core. . . 206

Frequency modulation (FM) core. . . 208

Central Processing Unit (CPU). . . 210

Memory. . . 212

Direct Storage Access (DMA) controller. . . 214

Power Management Unit (PMU). . . 216

Audio Processing Unit (APU). . . 218

Subband coding (SBC) codec. . . 220

FM receiver. . . 222

Analog to digital (A/D) converter. . . 224

FM transmitter. . . 226

Local oscillator (LO). . . 227

Digital to analog (D / A) conversion. . . 228

Bluetooth transceiver. . . 229

Bus main interface. . . 302

Universal Peripheral Interface (UPI). . . 304

Digital audio interface controller. . . 306

I ² S interface module. . . 308

Interface multiplexer. . . 310

I ² C interface module. . . 312

Rate adapter. . . 314

Cache. . . 316

FM/MPX demodulator and decoder. . . 317

RDS/RBDS demodulator and decoder. . . 318

Control register module. . . 322

Data flow arrow. . . 332

Data flow arrow. . . 334

Two way data flow arrow. . . 336

1A is a block diagram of an FM transmitter in communication with a handheld device using a single chip integrated with Bluetooth and FM radios in accordance with one embodiment of the present invention; FIG. 1B is an integrated Bluetooth and FM radio using an embodiment in accordance with the present invention. A block diagram of a single-chip handheld device communication FM receiver of the device; FIG. 1C is a block diagram of a single chip integrated with Bluetooth and FM radio and supporting FM processing and an external device supporting Bluetooth processing in accordance with one embodiment of the present invention 1D is a block diagram of a single chip integrated with Bluetooth and FM radios and an external device supporting Bluetooth and FM processing in accordance with one embodiment of the present invention; FIG. 1E is a diagram of a plurality of integrated support radios in accordance with one embodiment of the present invention; A block diagram of a single wafer of data processing radios; FIG. 1F is a block diagram of a single wafer integrated with Bluetooth and FM radios and supporting multiple interfaces in accordance with one embodiment of the present invention; FIG. 1G is an integration in accordance with one embodiment of the present invention A block diagram of a single chip with Bluetooth and FM radios and supporting interaction with a handheld baseband device and a coexisting wireless LAN; Figure 2A is a block diagram A block diagram of a single wafer supporting Bluetooth and FM operation with an external FM transmitter in accordance with one embodiment of the present invention; FIG. 2B is a single-wafer frame supporting Bluetooth and FM operation of an integrated FM transmitter in accordance with one embodiment of the present invention. Figure 2C is a flow diagram of processing received data in a single wafer integrated with Bluetooth and FM radios in accordance with one embodiment of the present invention; Figure 2D is a single integrated Bluetooth and FM radio in accordance with one embodiment of the present invention; Flowchart for processing FM data through a Bluetooth core within a wafer; FIG. 2E is a flow diagram of configuring a single wafer integrated with Bluetooth and FM radio based on an operational mode in accordance with one embodiment of the present invention; FIG. 3 is for use in accordance with one embodiment of the present invention A block diagram of the FM core and peripheral transmission unit (PTU) that handles RDS and digital audio data.

Single chip. . . 112a

external device. . . 114

Bluetooth radio. . . 116

Frequency modulation (FM) radio. . . 118

processor. . . 120

Baseband processor. . . 122

Claims (10)

A method of wireless communication, the method being applied to a single chip integrated with an FM radio, a Bluetooth radio, and an on-chip processor, the on-chip processor being communicatively coupled to the FM radio and the Bluetooth radio, A single wafer operates in one of only Bluetooth mode, FM mode only, and Bluetooth-FM mode, including: in Bluetooth-FM mode: transmitting received FM data to an integrated FM FM device integrated in a single wafer a Bluetooth radio within the single wafer; transmitting the received FM data from the Bluetooth radio to an on-chip processor in communication with the FM radio and the Bluetooth radio; by the on-chip processing Processing the received FM data into Bluetooth data; transmitting the Bluetooth data to the at least one Bluetooth device via the Bluetooth radio; in the FM only mode: disabling the Bluetooth radio integrated in the single wafer At least a portion of the apparatus; the method further comprising: receiving a radio by the FM radio Radio Data System data feed system, when the on-chip processor is in standby mode, by a direct memory access transfer the received data a memory in the single chip; the on-chip processor performs Bluetooth data processing based on a Bluetooth clock, and performs FM data processing based on an FM clock, the Bluetooth clock and the FM clock are different and do not affect each other; the on-chip processor pair The FM clock and the Bluetooth clock are gated and the appropriate clock is selected according to a time division multiplexing arrangement or arrangement. The method of claim 1, wherein the method further comprises time division multiplexing the processing of the FM data and the processing of the Bluetooth data in the one on-chip processor. The method of claim 1, wherein the method further comprises transmitting the FM data through a digital interface communicatively coupled to the Bluetooth radio, the FM radio, and the one on-chip processor The single wafer is taken out. The method of claim 3, wherein the method further comprises transmitting additional FM data to the single wafer via the digital interface. The method of claim 3, wherein the digital interface is a universal serial bus (USB) interface, a secure digital input/output (SDIO) interface, a universal non-synchronous transceiver (UART) interface, and an internal One of the integrated circuit bus (I ² C) interface, PCM interface and internal IC sound (I2S) interface. A machine readable memory, the computer program stored therein comprising at least one code segment for providing wireless communication, the at least one code segment being applied to an integration a single chip having an FM radio, a Bluetooth radio, and an on-chip processor in communication with the FM radio and the Bluetooth radio, the single chip in Bluetooth only mode, FM mode only, and Bluetooth One of the three modes of the FM mode, the at least one code segment being executed by the machine to cause the machine to perform the following steps: in the Bluetooth-FM mode: transmitting the received FM data to the FM radio integrated in a single wafer a Bluetooth radio integrated in the single wafer; transmitting the received FM data from the Bluetooth radio to an on-chip processor in communication with the FM radio and the Bluetooth radio; by the on-chip Processing, by the processor, the received FM data into Bluetooth data; transmitting, by the Bluetooth radio, the Bluetooth data to at least one Bluetooth device; in an FM only mode: disabling the Bluetooth integrated in the single chip At least a portion of a radio; the method further comprising: receiving wireless via the FM radio Information system data, when the sheet processor is in standby mode, the radio data system of the data received to the memory within the single-chip direct memory access; The on-chip processor performs Bluetooth data processing based on a Bluetooth clock, and performs FM data processing based on an FM clock, the Bluetooth clock and the FM clock are different and do not affect each other; the on-chip processor strobes the FM clock and the Bluetooth clock, And select the appropriate clock according to the time division multiplexing arrangement or arrangement. The machine readable memory of claim 6, wherein the machine readable memory further comprises processing the FM data and processing the Bluetooth data in the one on-chip processor. Time-division multiplexed code. A wireless communication system, the system comprising: a single wafer comprising an on-chip integrated FM radio, an on-chip integrated Bluetooth radio, and a communication connection with the integrated FM radio and the integrated Bluetooth radio An on-chip processor; the single chip operates in one of only Bluetooth mode, FM mode only, and Bluetooth-FM mode; in Bluetooth-FM mode: the on-chip integrated FM radio transmits received FM data a Bluetooth radio integrated in the single wafer; the on-chip integrated Bluetooth radio transmits the received FM data to the on-chip processor; the on-chip processor processes the received FM data into Bluetooth data ; The on-chip integrated Bluetooth radio transmits the Bluetooth data to at least one Bluetooth device; in the FM only mode: the single wafer disables at least a portion of the Bluetooth radio integrated within the single wafer; The FM radio receives radio profile data, the received radio profile data being transferred to a memory within the single wafer by direct memory access when the on-chip processor is in a standby mode; the on-chip processor Performing Bluetooth data processing based on the Bluetooth clock, performing FM data processing based on the FM clock, the Bluetooth clock and the FM clock are different and do not affect each other; the on-chip processor strobes the FM clock and the Bluetooth clock, and according to the time division The circuit is multiplexed or arranged to select the appropriate clock. The system of claim 8, wherein the on-chip single processor performs time division multiplexing of processing of the FM data and processing of the Bluetooth data. The system of claim 8, wherein the single wafer is connected by a digital interface communicatively coupled to the on-chip integrated Bluetooth radio, the on-chip integrated FM radio, and the on-chip single processor. The FM data is transmitted out of the single wafer.