CN202798712U - Bluetooth wireless transmission module - Google Patents
Bluetooth wireless transmission module Download PDFInfo
- Publication number
- CN202798712U CN202798712U CN 201220454185 CN201220454185U CN202798712U CN 202798712 U CN202798712 U CN 202798712U CN 201220454185 CN201220454185 CN 201220454185 CN 201220454185 U CN201220454185 U CN 201220454185U CN 202798712 U CN202798712 U CN 202798712U
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- bluetooth
- transmission module
- wireless transmission
- port
- interface
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Abstract
The utility model relates to a bluetooth wireless transmission module which is characterized by comprising a CRS8811 bluetooth chip, a filter and a crystal oscillator. A power port, a process input outputs (PIOs) port, a universal asynchronous receiver/transmitter (UART) port, a serial peripheral interface/pulse-code modulation (SPI/PCM) port and an antenna port are integrated on the PCB, and the antenna port is connected with an antenna. The bluetooth wireless transmission module is provided with dual modes, supports a low-energy high intensity discharge (HID) strating mode of the bluetooth, supports bluetooth strengthened rate transmission, enables transmission rate to achieve 3Mbps, can achieve wireless communication and form wireless network through high speed bluetooth, enables an original equipment manufacturer to increase a wireless connection function on products, brings convenience to achievement of various embedded bluetooth solution designs which are authenticated, and is environment-friendly.
Description
Technical field
The utility model relates to a kind of Bluetooth wireless transmission module, is applicable to multi-feature telephone, smart phone, personal navigation equipment, portable media player and machine to the Wireless Data Transmission of the equipment such as machine is mutual.
Background technology
Bluetooth technology has been eliminated the line between the equipment, replaces traditional electric wire with wireless connections.Bluetooth mainly is comprised of bluetooth hardware and Bluetooth protocol; Bluetooth hardware is comprised of simulation part and numerical portion, and simulation partly refers to the Bluetooth RF transmitting station, and numerical portion refers to master controller; Bluetooth protocol adopts circuit and two kinds of exchanged forms of packets of information, mainly contains radio frequency (RF), base band (BB), link manager (LM), the main embedded driver of control interface (HCI) bottom, HCI high layer software driver, logic link control adapting protocol (L2CAP), serial ports simulation protocol (RFCOMM), service discovery protocol (SDP), phone control protocol (TCS) formation of connecing.
Summary of the invention
The purpose of this utility model is to provide the Bluetooth wireless transmission module of a kind of low energy consumption and high-speed transfer.
To achieve these goals, the technical solution of the utility model is: a kind of Bluetooth wireless transmission module, comprise antenna, be packaged in CSR8811 Bluetooth chip, filter and crystal oscillator on the pcb board, be integrated with power interface, PIOs interface, UART interface and SPI/PCM interface on the described pcb board.
Preferably, be integrated with antennal interface on the described pcb board, described antennal interface is connected with antenna.
Preferably, described antenna is packaged on the pcb board.
Preferably, described crystal oscillator is the temperature-compensating crystal oscillator.
Preferably, described filter is band pass filter.
Preferably, the RF circuit of described bluetooth chipset separates with digital-to-analog circuit on the pcb board and near antennal interface.
The utlity model has following advantage: (1) dual mode bluetooth, support bluetooth low energy consumption HID start-up mode, can allow original equipment manufacturer increase wireless connecting function at the product of oneself, be convenient to realize the embedded Bluetooth solution design of various access authentications, environmental protection; (2) have UART high-speed interface and WLAN coexistence interface, support bluetooth enhancement mode speed rates, transmission rate can reach 3Mbps, and High Speed Bluetooth can be realized radio communication and consist of wireless network; (3) use the main frame bluetooth protocol repertory of this module, the designer can come for the client designs according to the demand of oneself like a cork, to support various bluetooth protocol repertories, such as HS/HF, A2DP, AVRCP, OPP, DUN and SPP etc.
Description of drawings
Fig. 1 is the theory diagram of the utility model one embodiment.
Fig. 2 is the theory diagram of another embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further elaborated.
With reference to figure 1 ~ 2, a kind of Bluetooth wireless transmission module, comprise antenna, be packaged in pcb board (Printed Circuit Board, printed circuit board (PCB)) the CSR8811 Bluetooth chip on, filter and crystal oscillator, be integrated with power interface on the described pcb board, PIOs interface (Programming Input Output, input/output interface able to programme), UART interface (Universal Asynchronous Receiver Transmitter, universal asynchronous reception and transmission interface) and SPI/PCM interface (Serial Peripheral Interface/Pulse Code Modulation, pulse code modulation interface/Serial Peripheral Interface (SPI)).Wherein, described UART interface is used for and HCI(Host Control Interface) controller transmission data and control signal, described pcm interface is used for the transmission of digital audio frequency.
As shown in Figure 1, in one embodiment, be integrated with antennal interface on the described pcb board, described antennal interface is connected with antenna.As shown in Figure 2, in another embodiment, described antenna is packaged on the pcb board, namely is integrated in inside modules.
In two embodiment, be integrated with the VBAT backup battery that operating voltage (VDD) is provided on the described pcb board, described power interface is connected with the outside pressurizer that operating voltage is provided, wherein the VBAT backup battery is main power supply, operating voltage can be provided or be provided by the outside pressurizer of 2.3V ~ 4.8V by the VBAT backup battery, and the standby current under deep sleep mode is 10 μ A.
In two embodiment, described crystal oscillator is the temperature-compensating crystal oscillator, and its frequency of oscillation is 26MHz; Described filter is band pass filter, and its frequency range is 2.402G ~ 2.480G.The radio frequency input impedance of this Bluetooth wireless transmission module is 50ohms, and radio-frequency emission power is 7dBm, and peak data transfer rate is 3Mbps, and sensitivity is-89dBm@0.1%BER.
For the module that does not have Antenna Design on the plate, the layout of pcb board is very important for optimizing module performance.In the present embodiment, the line impedence of walking from the antennal interface of module to exterior antenna should be 50 Ω, and circuit must be short as far as possible, to avoid that the module transceiver is caused interference; The position of exterior antenna and RF-IN port should be away from noise source and digital signal, may need matching network with better realization impedance matching between exterior antenna and the RF-IN port, reduces return loss; The RF circuit of described bluetooth chipset separates with the digital-to-analog circuit on the pcb board and near antennal interface, so the position of module should be in the numerical portion of the module place near the numeric area of pcb board system.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. Bluetooth wireless transmission module, comprise antenna, it is characterized in that: also comprise the CSR8811 Bluetooth chip, filter and the crystal oscillator that are packaged on the pcb board, be integrated with power interface, PIOs interface, UART interface and SPI/PCM interface on the described pcb board.
2. a kind of Bluetooth wireless transmission module according to claim 1, it is characterized in that: be integrated with antennal interface on the described pcb board, described antennal interface is connected with antenna.
3. a kind of Bluetooth wireless transmission module according to claim 1, it is characterized in that: described antenna is packaged on the pcb board.
4. a kind of Bluetooth wireless transmission module according to claim 1, it is characterized in that: described crystal oscillator is the temperature-compensating crystal oscillator.
5. a kind of Bluetooth wireless transmission module according to claim 1, it is characterized in that: described filter is band pass filter.
6. a kind of Bluetooth wireless transmission module according to claim 1 is characterized in that: the RF circuit of described bluetooth chipset separates with the digital-to-analog circuit on the pcb board and near antennal interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454185 CN202798712U (en) | 2012-09-07 | 2012-09-07 | Bluetooth wireless transmission module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454185 CN202798712U (en) | 2012-09-07 | 2012-09-07 | Bluetooth wireless transmission module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798712U true CN202798712U (en) | 2013-03-13 |
Family
ID=47825881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220454185 Expired - Lifetime CN202798712U (en) | 2012-09-07 | 2012-09-07 | Bluetooth wireless transmission module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022325A (en) * | 2015-08-18 | 2015-11-04 | 江苏钜芯集成电路技术有限公司 | Interface circuit for BT40 |
-
2012
- 2012-09-07 CN CN 201220454185 patent/CN202798712U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022325A (en) * | 2015-08-18 | 2015-11-04 | 江苏钜芯集成电路技术有限公司 | Interface circuit for BT40 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Riverside East Road in Fuzhou city of Fujian province 350015 No. 116 building 7 layer gateway Patentee after: FLAIRCOMM MICROELECTRONICS, Inc. Address before: Riverside East Road in Fuzhou city of Fujian province 350015 No. 116 building 7 layer gateway Patentee before: FUJIAN HUIHAN MICROELECTRONIC Co.,Ltd. Address after: Riverside East Road in Fuzhou city of Fujian province 350015 No. 116 building 7 layer gateway Patentee after: FUJIAN HUIHAN MICROELECTRONIC Co.,Ltd. Address before: Riverside East Road in Fuzhou city of Fujian province 350015 No. 116 building 7 layer gateway Patentee before: Fujian Flaircomm Microelectronics Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |