CN101262517A - A wireless communication module - Google Patents
A wireless communication module Download PDFInfo
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- CN101262517A CN101262517A CNA2008100665550A CN200810066555A CN101262517A CN 101262517 A CN101262517 A CN 101262517A CN A2008100665550 A CNA2008100665550 A CN A2008100665550A CN 200810066555 A CN200810066555 A CN 200810066555A CN 101262517 A CN101262517 A CN 101262517A
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- wireless communication
- interface
- communication module
- baseband processing
- processing chip
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Abstract
The invention discloses a wireless communication module which comprises a radio frequency module, a baseband processing chip and a memory; the baseband processing chip is respectively connected with the memory and the radio frequency module. The wireless communication module is characterized in that: the wireless communication module also comprises bus interfaces which are connected with the baseband processing chip and used for synchronally receiving information of outside modules and sending the information to the baseband processing chip, or synchronally sending the information of the baseband chip to the outside modules. The invention adds bus interfaces to the wireless communication module; the bus interfaces comprise interfaces of a data bus, an address bus, and a chip select signal line, a clock signal line and so on; the wireless communication module can be directly connected with an outside functional chip by the bus interfaces without any processor or peripheral interface circuit, thus reducing the cost of the hardware, having the advantages of high efficiency data transmission and enlarging the interest of users.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to a kind of wireless communication module.
Background technology
In field of wireless communication, wireless communication module (GSM/CDMA etc.) provides very big convenience for the various uses of user's employing wireless network, secondary development as fields such as wireless communication module is logical at wireless POS (electronic cash register), security protection, lottery ticket machine, intelligent meter data recording, tobacco, the campus is logical, wireless medium, medical monitoring, rail terminal, intelligent appliance and vehicle-mounted monitorings makes the application of wireless telecommunications reach diversification, therefore low-cost with efficiently be make that these products keep on top in competition one sharp sword.
Traditional wireless communication module as shown in Figure 1, this module mainly comprises power amplifier and alteration switch (PA and Switch), Surface Acoustic Wave Filter (Saw Filter), radio-frequency module (RF), baseband processing chip (Baseband), memory (Flash and RAM), power interface (POWER), SIM interface, universal asynchronous reception/transmission coffret (UART), audio interface (AUDIO), and the groundwork principle is:
Sending direction: receive primary signals such as data/AUDIO from external interface circuit by UART interface/AUDIO interface after, this primary signal is transferred to baseband processing chip encodes, coding is finished after radio-frequency module carries out the signal modulation, launches by antenna behind power amplifier and alteration switch again;
Receive direction: receive signal after alteration switch is finished separating of each frequency band signals with Surface Acoustic Wave Filter from antenna, enter radio-frequency module afterwards and carry out the signal demodulation, realize signal decoding through baseband processing chip again, send to external interface circuit by UART interface/AUDIO interface after restoring signals such as original data or AUDIO.
As from the foregoing, the user comes interactive instruction data between wireless communication module and external interface circuit by the UART interface, because the UART interface is the asynchronous transmission interface, has following defective when using:
On the one hand, the data communication efficient of UART interface itself is low, thereby the bottleneck of UART interface when becoming data function and using;
On the other hand, because functional chip need use bus interface, thereby the exploitation user need increase processor and perimeter interface circuit specially for wireless communication module and external function chip when using, and as shown in Figure 2, so just increased hardware cost.
Summary of the invention
Technical problem to be solved by this invention provides a kind of low cost, wireless communication module efficiently.
The objective of the invention is to be achieved through the following technical solutions:
A kind of wireless communication module, comprise radio-frequency module, baseband processing chip, memory, described baseband processing chip is connected with radio-frequency module with memory respectively, also comprise bus interface, described bus interface links to each other with baseband processing chip, be used for receiving the information of extraneous module synchronously and sending it to baseband processing chip, perhaps the information synchronization with baseband processing chip sends to extraneous module.
Wherein, described bus interface comprises data bus interface, address bus interface, chip selection signal line interface, clock signal line interface.
Wherein, described wireless communication module also comprises power amplifier and alteration switch, Surface Acoustic Wave Filter, SIM interface, universal asynchronous reception/transmission coffret, power interface, audio interface; Described power amplifier directly links to each other with radio-frequency module at transmit direction with alteration switch, links to each other with radio-frequency module by Surface Acoustic Wave Filter at receive direction; Described SIM interface, universal asynchronous reception/transmission coffret, power interface, audio interface link to each other with baseband processing chip.
Wherein, described wireless communication module is applied to GSM or cdma network.
The present invention has following beneficial effect:
The present invention has increased bus interface in wireless communication module, comprise interfaces such as data/address bus, address bus, chip selection signal line, clock cable, wireless communication module can directly be connected with the external function chip by this bus interface, and do not need processor and perimeter interface circuit thereof, reduced hardware cost, and the advantage with efficient transfer data has enlarged user's interests.
Description of drawings
Fig. 1 is the structural representation of conventional wireless communication module;
Fig. 2 is the application schematic diagram of conventional wireless communication module;
Fig. 3 is the structural representation of wireless communication module of the present invention;
Fig. 4 is the application schematic diagram of wireless communication module of the present invention;
Fig. 5 is the concrete application schematic diagram of wireless communication module of the present invention;
Fig. 6 is the structural representation of the bus interface of wireless communication module of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention is further described:
As shown in Figure 3, wireless communication module of the present invention comprises power amplifier and alteration switch (PA and Switch), Surface Acoustic Wave Filter (Saw Filter), radio-frequency module (RF), baseband processing chip (Baseband), memory (Flash and RAM), bus interface (BUS), power interface (POWER), SIM interface, universal asynchronous reception/transmission coffret (UART), audio interface (AUDIO).
Wherein, the specific implementation method of bus interface is:
As shown in Figure 6, in baseband processing chip, distribute hardware resource, comprise after 16 bit data bus, 2 bit address buses, 2 silvers select the clock cable of bus, 13M and read-write control line by resistors match being drawn out to connector, directly link to each other with functional chip by connector.
The operation principle of above-mentioned wireless communication module is:
Sending direction: receive primary signals such as data/audio frequency from bus interface/audio interface after, this primary signal is transferred to baseband processing chip encodes, coding is finished after radio-frequency module carries out the signal modulation, launches by antenna behind power amplifier and alteration switch again;
Receive direction: receive signal after alteration switch is finished separating of each frequency band signals with Surface Acoustic Wave Filter from antenna, enter radio-frequency module afterwards and carry out the signal demodulation, realize signal decoding through baseband processing chip again, send by bus interface/audio interface after restoring signals such as original audio frequency or data.
Because the bus interface of bus interface for supporting to be connected with the external function chip, comprise data/address bus, address bus, chip selection signal line, reading writing signal line and clock signal line interface etc., thereby when using, wireless communication module directly can be connected with the external function chip by this bus interface, as shown in Figure 4.As using in the functional chip of wireless communication module and 16 buses at needs, need use 16 position datawires, 2 silvers select holding wire, read-write control line and 2 bit address lines, wireless communication module of the present invention can directly be joined seamlessly to the external function chip, the concrete connection as shown in Figure 5.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1, a kind of wireless communication module, comprise radio-frequency module, baseband processing chip, memory, described baseband processing chip is connected with radio-frequency module with memory respectively, it is characterized in that, also comprise bus interface, described bus interface links to each other with baseband processing chip, is used for receiving the information of extraneous module synchronously and sending it to baseband processing chip, and perhaps the information synchronization with baseband processing chip sends to extraneous module.
2, wireless communication module as claimed in claim 1 is characterized in that, described bus interface comprises data bus interface, address bus interface, chip selection signal line interface, read-write line interface and clock signal line interface.
3, wireless communication module as claimed in claim 1 is characterized in that, described wireless communication module also comprises power amplifier and alteration switch, Surface Acoustic Wave Filter, SIM interface, universal asynchronous reception/transmission coffret, power interface, audio interface; Described power amplifier directly links to each other with radio-frequency module at transmit direction with alteration switch, links to each other with radio-frequency module by Surface Acoustic Wave Filter at receive direction; Described SIM interface, universal asynchronous reception/transmission coffret, power interface, audio interface link to each other with baseband processing chip.
4, as the arbitrary described wireless communication module of claim 1 to 3, it is characterized in that described wireless communication module is applied to GSM or cdma network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100665550A CN101262517A (en) | 2008-04-08 | 2008-04-08 | A wireless communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100665550A CN101262517A (en) | 2008-04-08 | 2008-04-08 | A wireless communication module |
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| CN101262517A true CN101262517A (en) | 2008-09-10 |
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| CNA2008100665550A Pending CN101262517A (en) | 2008-04-08 | 2008-04-08 | A wireless communication module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988417A (en) * | 2020-08-28 | 2020-11-24 | 电子科技大学 | Communication control method of physical network terminal |
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2008
- 2008-04-08 CN CNA2008100665550A patent/CN101262517A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988417A (en) * | 2020-08-28 | 2020-11-24 | 电子科技大学 | Communication control method of physical network terminal |
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Application publication date: 20080910 |