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TJA1145T/FD SPI port not working

Question asked by CHIALIN CHUNG on May 8, 2019
Latest reply on May 10, 2019 by Jose Alberto Reyes Morales

Hi,

TJA1145 SPI communication failure had TJA1145T/FD SPI control issue, the issue is quite queer to me.

Below listed are marking on the top of IC, only BRE00868 SPI port working properly, others just no repose on SPI port.

TJA1145T/FD

BRE00868

ZoD18031

TJA1145T/FD

BRE0002D

ZoD18031

TJA1145T/FD

BRE00025

ZoD18031

TJA1145T/FD

BRE0004H

ZoD18031

 

Below is SPI control clock from my LA, below is example to get IC identification, the response is 0x00. The good one will response exactly ID back. the good one working on 1M Hz clock is fine, I do lower clock in example still not working.

INH pin is working good, it goes high when detect CAN activities but SPI port just not working on write/read mode.

 

Does anyone encounter similar situation? or anyone from NXP couls help on it.

Thanks and best regards,

Gavin

 

 

 

 

 

 

 

 

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