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Device and method for implementing automatically reading and writing internal integrated circuit equipment

An internal integrated circuit and device technology, applied in the field of devices that realize automatic reading or writing of I2C devices, can solve the problems of wasting CPU time and cumbersome operations, and achieve the effect of simplifying the workload and simplifying the cumbersome software.

Inactive Publication Date: 2004-12-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The technical problem to be solved by the present invention is to overcome the defects of cumbersome operation and waste of CPU time when accessing the internal integrated circuit device in the prior art, and provide a device and method for automatically reading and writing the internal integrated circuit device

Method used

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  • Device and method for implementing automatically reading and writing internal integrated circuit equipment
  • Device and method for implementing automatically reading and writing internal integrated circuit equipment
  • Device and method for implementing automatically reading and writing internal integrated circuit equipment

Examples

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Embodiment Construction

[0078] The device for automatically reading and writing I2C equipment in the embodiment of the present invention is as follows: figure 1 As shown, the device is composed of an instruction generation module 1 and a read and write operation execution module 2, and is realized by FPGA or CPLD. The command generation module 1 is connected to the active device 4 and the read and write operation execution module 2 respectively through the asynchronous access bus, and the read and write operation execution module 2 is connected to the I2C device 3 through the I2C bus. in:

[0079] ① Instruction generation module 1, implemented by hardware, is used to receive the start signal provided by the active device, the read / write signal and the device address of the I2C device, the register address and the data to be written into the register, and automatically generate the data required for accessing the I2C device. The instructions are sent to the read and write operation execution module a...

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Abstract

The present invention discloses equipment and method of automatically reading / writing I2C device. The equipment consists of hardware realized command generating module and write / read operation executing module, the command generating module is connected via the asynchronous access bus with active equipment and the write / read operation executing module, and the write / read operation executing module is connected via the I2C bus with I2C equipment. During write / read, the active equipment provides the starting signal, write / read signal and the address and register address of the I2C equipment and the data to be written; the command generating module generates automatically the commands essential for access of the I2C equipment and sends to write / read operation executing module; and the write / read operation executing module generates the signal time sequence for access of the I2C equipment based on I2C bus protocol and executes the write / read operation to the I2C equipment.

Description

technical field [0001] The invention relates to a device and method for reading and writing integrated circuit equipment, in particular to realizing automatic reading of I2C (inter-integrated circuit internal integrated circuit, a standard interface circuit, invented by PHILIPS) equipment in the field of data communication. or written apparatus and methods. Background technique [0002] In many cases, the electronic equipment system or CPU application system has a low-speed asynchronous access bus interface, but there is no I2C bus (including two signal lines of SDA and SCL, which respectively represent the data signal line and clock signal line of the I2C bus. The following I2C The bus refers to the two signal lines) interface, and at this time, the I2C device needs to be read and written. This requires conversion of the low-speed asynchronous access bus and the I2C interface bus. [0003] Existing methods for realizing low-speed asynchronous access bus and I2C interface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/12
Inventor 周广水何宁郑斌儒
Owner ZTE CORP
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