Multi-chip series automatic address coding system and method

Abstract

The invention discloses a multi-chip series automatic address coding system and method, and the system comprises a main control device and N chips, the main control device is connected with a first chip, and the sending end of each chip is connected with the receiving end of the next chip from the first chip to the Nth chip; the main control device is used for sending an automatic address distribution instruction to the first chip; wherein the automatic address distribution instruction comprises an ID; and each chip is used for receiving the automatic address allocation instruction, decoding the automatic address allocation instruction to obtain the ID, setting the ID as a chip ID, carrying out operation on the ID according to an operation rule to obtain an operation automatic address allocation instruction, and sending the operation automatic address allocation instruction to the next chip. The communication efficiency is high; through automatic address coding, a chip address does notneed to be set by occupying an IO port of the chip, the chip address can be redistributed at any time when the chip is replaced, maintenance and replacement of the chip are facilitated, and use is more convenient. The invention relates to the technical field of communication.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a multi-chip serial automatic address coding system and method. Background technique [0002] In current applications that require large-scale parallel computing or large-scale parallel control, dozens or even hundreds of identical chips are generally required to work at the same time. Control the working status of the chip. At present, there are two multi-chip serial communication methods. The first method is that after each chip receives the signal, it parses the data according to the protocol and forwards the data to the next chip. When the number of serial chips is large, the subsequent chip receives the data delay. Long; the second method is that each chip is directly connected to the next chip before parsing the data, and then each chip parses the data by itself. [0003] In the prior art, there are three address coding methods. The first one is to directly use IO ...

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Problems solved by technology

[0003] In the prior art, there are three address coding methods. The first one is to directly use IO in the chip to set the chip address, which is suitable for multi-chip serial communication mode 1 and multi-chip serial communication mode 2. The disadvantage is that when the number of chips is too large, it takes up The number of IOs is large, and it is inconvenient to add upper and lower resistors when designing the circuit board; the second is to set a unique ID when the chip leaves the factory, which is suitable for multi-chip serial communication mode 1 and multi-chip serial communication mode 2. The disadvantage is that when replacing the chip , the address also changes, and the encoding address and physical location cannot be fixed; the third is automatic address encoding, which assigns the chip address through the master control, which is only applicable to the first method

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