Cache system and cache method of high-reliable spacecraft frame format data queue
A data queue and cache system technology, applied in the field of aerospace electronics, can solve the problems of high complexity and low reliability of spacecraft frame structure data cache control, achieve low logic resource overhead, strong ease of use, and eliminate data leakage. Effect
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[0043] A highly reliable spacecraft frame format data queue buffer system. Select the dual-port RAM as the physical data memory, the RAM has two ports, one is the read interface, the other is the write interface; determine the parameters of the dual-port RAM memory, assuming that M is the data length of each frame, L is the frame queue capacity, and the data The width is n bits, then the depth of the dual-port RAM should be M×L, and the width is n bits; the data address is classified into two levels, the first level is the frame-level address Addr_L, and the address range is 0 to L- 1. It is used to address the frame structure in the frame queue memory; the second level is the intra-frame data address Addr_M, the address range is 0 to M-1; the corresponding dual-port RAM memory physical address Addr_RAM, the address range is 0 to M×L -1; Design frame read and write address conversion unit to realize secondary address mapping, the rules are:
[0044] R_Addr_RAM=R_Addr_L×M+R_Ad...
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