CRC7 Input bits in Command and Response

[beky4kr@gmail.com]

Can someone confirm the SDIO CRC7 bits input for the 48 bits command
and response and 136 response.

For case 1 and 2 the CRC7 is calculated on 40 bits starting from the
very first bit - the start bit. For case 3 the first two bits (start
and transmission bits) and the six reserved ones, which follow, are
skipped. Than 120 bits are fed to the CRC7 module.

The issue explained in detail at
http://bknpk.no-ip.biz/SDIO/CRC7_cmd_rsp_input_bits.html
http://bknpk.no-ip.biz/SDIO/CRC7.html

 

[Mike Treseler]

On May 24, 8:28 am, "beky...@gmail.com" <beky...@gmail.com> wrote:

Can someone confirm the SDIO CRC7 bits input for the 48 bits command
and response and 136 response.

For case 1 and 2 the CRC7 is calculated on 40 bits starting from the
very first bit - the start bit. For case 3 the first two bits (start
and transmission bits) and the six reserved ones, which follow, are
skipped. Than 120 bits are fed to the CRC7 module.

The issue explained in detail athttp://bknpk.no-ip.biz/SDIO/CRC7_cmd_rsp_input_bits.htmlhttp://bknpk.no-ip.biz/SDIO/CRC7.html

 

[Mike Treseler]

On May 24, 8:28 am, "beky...@gmail.com" <beky...@gmail.com> wrote:

Can someone confirm the SDIO CRC7 bits input for the 48 bits command
and response and 136 response.

Sure. You can.
Get the source code, get a simulator, write a testbench.

-- Mike Treseler