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Bulk memory accessing method for I2C controller in 10-site addressing mode

A technology of large-capacity memory and addressing mode, applied in the field of using I2C controller to access large-capacity memory, can solve the problems of insufficient addressing space of I2C controller and inability to address storage space, etc., to expand the available address space and ensure compatibility. sexual effect

Inactive Publication Date: 2008-09-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In view of the above, the present invention will solve the technical problem that the I2C controller adopting the 10-bit addressing mode cannot address the storage device with a storage space greater than 1K bytes due to insufficient addressing space, so as to improve the storage space of the system and provide more storage space for the system. powerful functions

Method used

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  • Bulk memory accessing method for I2C controller in 10-site addressing mode
  • Bulk memory accessing method for I2C controller in 10-site addressing mode
  • Bulk memory accessing method for I2C controller in 10-site addressing mode

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Embodiment Construction

[0048] The method described in the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Some large-capacity memories, especially memories larger than 1K bytes of storage space, provide some operations compatible with the operation of the I2C controller using 10-bit addressing mode, including: write by byte, write by page, current address Read / write, random read, page-by-page read, etc. Several common modes of operation are discussed below.

[0050] (1) Read a byte from the current address: This operation mode is exactly the same as the operation mode of reading a byte from the current address mentioned in the background technology, and will not be discussed here.

[0051] (2) Write a byte to the current address: This operation mode is exactly the same as the operation mode of writing a byte to the current address mentioned in the background technology, and will not be discussed here.

[0...

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Abstract

The accessing to the large capacity storage device of the I2C controller using 10 digit addressing mode, starts with the I2C controller sending out a start signal, sending out writing instruction, waiting for the return of ACK, sending out the higher 8 digits of the said data addressing, waiting for return of ACK, sending out low 8 digits of the data addressing, waiting for ACK return, sending out a start signal, reading a digit of the said data and waiting for ACK. If the read data is of one digit, go directly to next step, otherwise, repeat the step till the reading of all the data with certain length till the stop of the instruction sending. It can easily realize standard I2C controller accessing of I2C storage media with larger space in a simple and highly efficient way.

Description

technical field [0001] The invention relates to the communication field of telecommunication equipment, electronic equipment and computer equipment, in particular to a method for using an I2C controller to access a large-capacity memory. Background technique [0002] At present, in the fields of numerically controlled consumer appliances, telecommunication equipment, electronic equipment, and computer equipment, I2C buses and other equipment are widely used to realize mutual communication between equipment. [0003] The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus consisting of a bidirectional data line SDA and a clock line SCL. Through these two lines, system components can communicate with each other. The I2C bus is divided from the transmission rate, there are standard mode (100Kbit / s), fast mode (400Kbit / s), high-speed mode (3.4Mbit / s); from the addressing range, there are 7-bit address mode and 10-bit address mode . The I2C bus connects the I2C master c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42G06F3/06
Inventor 郑其杉马彧杨波
Owner ZTE CORP