Hi， TI
I meet a problem about the CRC fault of I2C1. We have two PMICs in our project, the part number as below
TPS65941111RWERQ1
TPS65941212RWERQ1
I use same software function to calculate the CRC of I2C1. It works in TPS65941212RWERQ1, but failed in TPS65941111RWERQ1.
And also the PMIC init funcation are same. Do you have any advice about it? Register 6A is 0x02 which COMM_CRC_ERR_INT is set.
Thank you!
Zhihua
Hi Michael
Below is my steps
1. Enable CRC
2. calculate the CRC = 0xee
3. update register 0x10, and failed
BTW, same step works for PMICA
Thanks!
Zhihua
Below is my steps
1. Enable CRC
These steps aren't necessary. PDN-0B (TPS65941212 + TPS65941111) has a built in trigger to enable the CRC for both devices. From the user guide (here)
2. calculate the CRC = 0xee
I don't believe your inputs to the calculator are correct. The device address is only the 7 most significant bits of the first byte. There for calculating CRC, you have to use 0x98 instead of 0x4C
