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Serial interface communication method and system for peripheral device of PDA and host CPU and peripheral apparatus

A technology of peripheral equipment and serial interface, applied in the direction of instruments, electrical digital data processing, etc., can solve the problem of easy loss of data and other information, and achieve the effect of ensuring stability and reliability

Inactive Publication Date: 2007-10-17
LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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Problems solved by technology

[0015] However, when the host CPU 11 and the connected peripheral device 12 run according to the controlled mode, and the system works according to the high-speed clock (high speed clock) of the host CPU 11 in the master control mode, the transmitted data and other information are very fast. easy to lose

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  • Serial interface communication method and system for peripheral device of PDA and host CPU and peripheral apparatus
  • Serial interface communication method and system for peripheral device of PDA and host CPU and peripheral apparatus
  • Serial interface communication method and system for peripheral device of PDA and host CPU and peripheral apparatus

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Embodiment Construction

[0037] The serial interface communication method and system embodiment of the peripheral device between the PDA and the host CPU and peripheral equipment of the present invention will be described in detail below with reference to the accompanying drawings.

[0038]As shown in Figure 3, for the system 100 that carries out SPI communication between the PDA according to the embodiment of the present invention and the host CPU and peripheral equipment, the host CPU 110 operates according to the controlled mode, for example: peripheral equipment 120 such as AV decoding chip Run in master mode. Here, in the embodiment of the present invention, referring to the system 10 according to the prior art as shown in Fig. The control line called RDY (signal reserve) is additionally set on the four lines of control line and SDI and SDO two data communication lines, and then it is connected with the GPIO of the host CPU 110 and the interrupt signal of the peripheral device 120.

[0039] In a...

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Abstract

The invention relates to a method and system for the communication of serial interface for a peripheral device between a PDA and a host computer CPU and a perpheral apparatus. The method for communication in the invention includes the steps that: the host computer CPU is set as control mode, the perpheral apparatus is set as main control mode,in such a case, when the high capacity data is transmitted uder high speed between the PDA and the host computer CPU and the perpheral apparatus, the communication of serial interface for peripheral device is carried out between the PDA and the host computer CPU and the perpheral apparatus.To this end, even if the operation based on the high speed clock mode, the high capacity data can also be transmitted at high speed by a SPI communication mode between the PDA and the host computer CPU and the perpheral apparatus, and the data is not lost yet.

Description

technical field [0001] The present invention relates to a kind of method and the system that carry out serial interface (SPI) communication of peripheral device between a kind of PDA and host central processing unit (CPU) and peripheral equipment, relate in particular to: In order to make PDA and host CPU and peripheral equipment pass through SPI communication, so as to transmit large-capacity data, even in the case of running according to a high speed clock (high speed clock) mode, the SPI communication method and system that can prevent the transmitted data from being lost. Background technique [0002] Generally speaking, PDA (Personal Digital Assistants: personal digital assistants) can store the files created by the computer at home or in the office, and can continue to operate even during the moving process. It is the same as the electronic manual, and it is a A portable personal information terminal capable of managing personal information and schedules and exchanging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
Inventor 李慧珍
Owner LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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