Device and method for converting exchange processing encode bit slice into byte
A conversion device and coding technology, applied in the field of communication chips, can solve the problems of limited S-code drop-insertion capacity, increased insertion capacity cost, and difficulty in integrating S-code drop-ins and cross-chips, so as to achieve resource saving and drop-in capacity. The effect of reducing and avoiding read and write conflicts
Inactive Publication Date: 2010-08-25
HUAWEI TECH CO LTD
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Problems solved by technology
Therefore, if S-code processing is not performed in BitSlice mode, a large amount of RAM or REG will be occupied, and the large-scale use of RAM or REG arrays will bring three problems: one is to enable existing methods to realize S-code in BitSlice mode. The code insertion capacity is limited; the second is to increase the cost of realizing the S-code insertion capacity in the BitSlice mode of a certain specification; the third is to make it difficult to integrate the S-code insertion and cross-chip in the BitSlice mode
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[0035] A bit slice-to-byte conversion device for exchanging processing codes, comprising:
[0036] BitSlice mode S-code row and column counter, used to generate S-code time slot signal;
[0037] A memory for storing S-code information;
[0038] The input data selection unit receives the S-code time slot signal, extracts the service data in the BitSlice mode input data stream according to the S-code time slot signal (that is, the S-code encoding information under the BitSlice mode), and stores it in the memory;
[0039] Byte mode S-code row and column counter, used to generate the S-code read time slot signal indicated by Byte;
[0040] The S-code processing unit receives the S-code read time slot signal indicated by Byte, and extracts and outputs the S-code information in the memory according to the read time slot signal;
[0041] The output data selection unit receives the S-code indication signal inserted in the Byte mode, the input data stream and the S-code information o...
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The switching device comprises: a BitSlice mode S-code row / column counter; a memory; an input data selecting unit for receiving S-code time slot signals, and according to the S-code time slot signals extracting S-code information from BitSlice mode inputted data stream, and saving the extracted S-code information in the memory; a Byte mode S-code row / column counter; a S-code processing unit for receiving S-code read time slot signals, and according to the read time slot signals extracting S-code information and outputting it; an outputted data selected unit for receiving the indication signals for inserting S-code signal under Byte mode into the inputted data stream, and outputting Byte mode data stream.
Description
technical field [0001] The invention belongs to the technical field of communication chips, in particular to a device and method for exchanging and processing codes. Background technique [0002] Before the switching process, the communication chip performs switching processing coding (Switching code, referred to as "S-code", referring to the coding of special bytes in the data stream) for some alarms that meet the automatic protection switching conditions. According to the encoding method of exchange processing, it can be divided into two encoding methods: bit slice (BitSlice) and byte (Byte). BitSlice is further divided into four modes: nibble (4Bit), quarter byte (2Bit), and single bit (1Bit). At present, the compatibility between BitSlice and Byte encoding methods cannot be achieved. The automatic protection switching function of the communication chip not only supports byte Byte, but also supports nibble (4BitSlice), quarter byte (2BitSlice) and single bit (1BitSlice)...
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IPC IPC(8): H03M7/14H04Q1/20
Inventor 徐善锋熊焰杨怡伟雷张伟李红军袁丽霞
Owner HUAWEI TECH CO LTD