The utility model content
The shortcoming that the purpose of the utility model is to overcome prior art provides a kind of NFC chip with not enough.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of NFC chip; It is characterized in that; Comprise CPU, NFC signal processing unit and input/output interface unit, said NFC signal processing unit and CPU interconnect through the internal bus of chip, and said CPU and input/output interface unit interconnect through the internal bus of chip;
Said CPU, control and processing derive from or send to the data of NFC signal processing unit, and perhaps, control and processing derive from or send to the data of input/output interface unit;
Said NFC signal processing unit is used to receive and handle the signal input of outside R-T unit, carries out demodulation according to the NFC standard, transfers to CPU control and processing; Perhaps, receive the data that come from the input/output interface unit, modulate, give outside R-T unit result transmission according to the NFC standard by CPU control and processing;
Said input/output interface unit is used to receive and handle the signal input of external interface device, transfers to CPU control and processing; Perhaps, receive data, give external interface device result transmission by CPU control and processing.
A kind of NFC chip of the utility model also comprises the power management module that is used to provide power supply signal, Clock management module and the memory management module that is used to provide clock signal, and said CPU and memory management module interconnect through the internal bus of chip.
Preferably, said memory management module comprises the RAM administration module and the FLASH administration module that is used for in-chip FLASH is carried out real-time management that is used for ram in slice is carried out real-time management.
Preferably, said NFC signal processing unit is an ISO14443 RF signal processing unit.
Preferably, said input/output interface unit is the bluetooth communication unit, and said external interface device is a high frequency antenna.
Preferably, said input/output interface unit is the WIFI communication unit, and said external interface device is a high frequency antenna.
Preferably, said input/output interface unit is a digital to analog converter, and said external interface device is an audio connector.
Preferably, said input/output interface unit is the USB control unit, and said external interface device is a USB connector.
Preferably, said input/output interface unit is the SD/MMC control unit, and said external interface device is the SD/MMC connector.
Preferably, said input/output interface unit is the Ethernet control unit, and said external interface device is an ethernet connector.
The utility model has following advantage and effect with respect to prior art:
1, the utility model is through to the integrated more input/output interface of NFC chip, compares existing chip, increases more practical interface function.
2, the utility model is compared existing chip, and being applicable to more to produce in enormous quantities becomes special-purpose NFC connector, is connected with existing device.
3, the utility model is compared existing chip, has utilized CPU, memory more fully, has further improved integrated level, has practiced thrift cost, volume and power consumption.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but the execution mode of the utility model is not limited thereto.
Embodiment 1
Of Fig. 1; A kind of NFC chip comprises CPU, NFC signal processing unit and input/output interface unit, and said NFC signal processing unit and CPU interconnect through the internal bus of chip; Said CPU and input/output interface unit interconnect through the internal bus of chip
Said CPU, control and processing derive from or send to the data of NFC signal processing unit, and perhaps, control and processing derive from or send to the data of input/output interface unit;
Said NFC signal processing unit is used to receive and handle the signal input of outside R-T unit, carries out demodulation according to the NFC standard, transfers to CPU control and processing; Perhaps, receive the data that come from the input/output interface unit, modulate, give outside R-T unit result transmission according to the NFC standard by CPU control and processing.
Said input/output interface unit is used to receive and handle the signal input of external interface device, transfers to CPU control and processing; Perhaps, receive data, give external interface device result transmission by CPU control and processing.
As shown in Figure 2, when the NFC Chip Packaging became blue tooth interface NFC chip, said blue tooth interface NFC chip comprised CPU, ISO14443 RF signal processing unit, bluetooth communication unit, memory management module, power management module and Clock management module.
CPU in the chip through internal bus respectively with the line data exchange of going forward side by side that is connected with memory management module of ISO14443 RF signal processing unit, bluetooth communication unit.Wherein, memory management module be divided into RAM management and FLASH management several sections respectively to ram in slice with FLASH implementation manage; ISO14443 RF signal processing unit is responsible for according to the ISO14443 standard logarithmic according to carrying out modulation; Bluetooth unit and chip are responsible for according to bluetooth standard data being carried out modulation; The external interface device high frequency antenna inputs or outputs above-mentioned data.
In addition, power management module is connected with above-mentioned each functional module with the Clock management module and suitable power supply and clock signal is provided for each functional module.
Embodiment 2
Like Fig. 3, when the NFC Chip Packaging became the WIFI interface chip, said WIFI interface chip comprised CPU, ISO14443 RF signal processing unit, WIFI communication unit, memory management module, power management module and Clock management module.
CPU in the chip through internal bus respectively with the line data exchange of going forward side by side that is connected with memory management module of ISO14443 RF signal processing unit, 2.4G WIFI communication unit.Wherein, memory management module be divided into RAM management and FLASH management several sections respectively to ram in slice with FLASH implementation manage; ISO14443 RF signal processing unit is responsible for according to the ISO14443 standard logarithmic according to carrying out modulation; 2.4G the WIFI communication unit is responsible for carrying out modulation according to WIFI standard logarithmic certificate, the external interface device high frequency antenna inputs or outputs above-mentioned data.
In addition, power management module is connected with above-mentioned each functional module with the Clock management module and suitable power supply and clock signal is provided for each functional module.
Embodiment 3
Like Fig. 4, when the NFC Chip Packaging became COBBAIF NFC chip, said COBBAIF NFC chip comprised CPU, ISO14443 RF signal processing unit, ADC unit, memory management module, power management module and Clock management module.
CPU in the chip through internal bus respectively with the line data exchange of going forward side by side that is connected with memory management module of ISO14443 RF signal processing unit, ADC unit.Wherein, memory management module be divided into RAM management and FLASH management several sections respectively to ram in slice with FLASH implementation manage; ISO14443 RF signal processing unit is responsible for according to the ISO14443 standard logarithmic according to carrying out modulation; The ADC unit is responsible for according to pre-determined sound wave or ultrasonic wave form data being carried out the conversion of digital signal and analog signal, and the external interface device audio connector inputs or outputs above-mentioned data.
In addition, power management module is connected with above-mentioned each functional module with the Clock management module and suitable power supply and clock signal is provided for each functional module.
Embodiment 4
Like Fig. 5, when the NFC Chip Packaging became USB interface NFC chip, said USB interface NFC chip comprised CPU, ISO14443 RF signal processing unit, USB control unit, memory management module, power management module and Clock management module.
CPU in the chip through internal bus respectively with the line data exchange of going forward side by side that is connected with memory management module of ISO14443 RF signal processing unit, USB control unit.Wherein, memory management module be divided into RAM management and FLASH management several sections respectively to ram in slice with FLASH implementation manage; ISO14443 RF signal processing unit is responsible for according to the ISO14443 standard logarithmic according to carrying out modulation; The USB control unit is responsible for according to USB standard transceive data, and external interface dress USB connector inputs or outputs above-mentioned data.
In addition, power management module is connected with above-mentioned each functional module with the Clock management module and suitable power supply and clock signal is provided for each functional module.
Embodiment 5
Like Fig. 6, when the NFC Chip Packaging became SD/MMC interface NFC chip, said SD/MMC interface NFC chip comprised CPU, ISO14443 RF signal processing unit, SD/MMC control unit, memory management module, power management module and Clock management module.
CPU in the chip through internal bus respectively with the line data exchange of going forward side by side that is connected with memory management module of ISO14443 RF signal processing unit, control SD/MMC unit.Wherein, memory management module be divided into RAM management and FLASH management several sections respectively to ram in slice with FLASH implementation manage; ISO14443 RF signal processing unit is responsible for according to the ISO14443 standard logarithmic according to carrying out modulation; The SD/MMC control unit is responsible for according to SD/MMC standard transceive data; External interface device SD/MMC connector inputs or outputs above-mentioned data.
In addition, power management module is connected with above-mentioned each functional module with the Clock management module and suitable power supply and clock signal is provided for each functional module.
Embodiment 6
Like Fig. 7, when the NFC Chip Packaging became Ethernet interface NFC chip, said Ethernet interface NFC chip comprised CPU, ISO14443 RF signal processing unit, Ethernet control unit, memory management module, power management module and Clock management module.
CPU in the chip through internal bus respectively with the line data exchange of going forward side by side that is connected with memory management module of ISO14443 RF signal processing unit, Ethernet control unit.Wherein, memory management module be divided into RAM management and FLASH management several sections respectively to ram in slice with FLASH implementation manage; ISO14443 RF signal processing unit is responsible for according to the ISO14443 standard logarithmic according to carrying out modulation; The Ethernet control unit is responsible for according to the ethernet standard transceive data; The external interface device ethernet connector inputs or outputs above-mentioned data.
In addition, power management module is connected with above-mentioned each functional module with the Clock management module and suitable power supply and clock signal is provided for each functional module.
The foregoing description is the utility model preferred implementation; But the execution mode of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection range of the utility model.