Hello,
want to know the type of EEprom  CRC algo used in Siemens/Continental TC176X CPU tricores.
 I didn't find too much info, but what I noticed while using the RET software (I analyzed dozens of dumps):

 * there are not many blocks that have a valid CRC (3 at most according to the dumps I tested).
 * the size of the data covered by the crc is quite large 0x1600 bytes.
considering the size, I think the algo must be a CRC 32, but they only take half of it (16 bits).

 It remains to determine the initial value, and the exact size of the data.


 Here is an example (file attached): Sid 305.

00001800      70 39 00 00 01 00 3B 4D    6F AF  F3 AD E4 1E B7 32   
00001900      ....................................................................
.                    ....................................................................
.                     ....................................................................
.                    ....................................................................
.                    ....................................................................
.                    ....... .............................................................
00002DF0       00 00 00 00 00 00 00 00   31 0F 82 B3 8F C6 FF FF 

In this example there is only one block with valid CRC

Block ID 00003970
Size : 0x1600 bytes  : 0x1800---0x02DFF
CRC : 82 B3

I tried several CRC 32 and CRC16 algorithms,but without success,
 If anyone has any info please share.

Maybe this is the one?
https://github.com/bri3d/VW_Flash/blob/9d7a0f3bfed48b2c88e2d5cfa4b714e9560a46b7/lib/checksum.py#L46