ASIC/FPGA Design and Verification Out Source Services

The following VCD -wave format- shows some SDIO command transactions: Command 0x00 followed by command 0x37 (55) and response of R1. The CRC module is active in both ways. When a command arrives it is required to check its CRC7. When a response is sent the CRC7 has to be calculated and appended to the response.

1. Please note that a newer version of the SD slave exists. It supports Samsung flash (k9f1208) instead of xilinx ROM. link to newer version



2. The inputs to the CRC7 module in assorted cases such as command and response of 48 bits and response of 136 bits is explained at: CRC7 input bits
3. The VCD is available at download area : wave.vcd.gz

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CRC7 input bits CRC7 Wave Flow Description

SDIO Slave Free Code SDIO Master non Free Code

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