SNIS214E june 2021 – july 2023 TMP114
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
Table 8-3 defines the CRC calculation rule.
CRC Rule | Value |
---|---|
CRC Width | 8 bits |
Polynomial | x8 + x2 + x + 1 (07h) |
Initial seed value | FFh |
Input data reflected | No |
Result data reflected | No |
XOR value | 00h |
The CRC calculation is done on the command word and the data block. Figure 8-19 shows the block diagram. The module consists of an 8-bit shift register and 3 exclusive-OR gates. The register starts with the seed value FFh and the module performs an XOR function and shifts its content until the last bit of the register string is used. The final value of the shift register is the checksum that is checked by either the controller or the TMP114 to validate the transaction.