TJA1128 SPI read

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HOLYMS
Contributor I

Hello, I have something need to ensure: when the mcu send a wrong address or not a 16 or 24 bit data, will it send the data back to the mcu?

the datasheet said that TJA1128 will not execute write operation it but I need to know whether it will send the wrong data back to the mcu, since i meet a problem that when I send anything to the TJA1128 ,it will send what I send back.

the chip I use is

CY8C4146LQS-S433/QFN-40(an PSOC chip), I think the way I send the data is ok:微信截图_20221130125038.png

 

thank you

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guoweisun
NXP TechSupport
NXP TechSupport

guoweisun_0-1669795101706.png

 

You can see the SPI write operation pattern, SPI is fullduplex data transfer, when write data0 in SDI the same data appears in SDO.

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guoweisun
NXP TechSupport
NXP TechSupport

guoweisun_0-1669795101706.png

 

You can see the SPI write operation pattern, SPI is fullduplex data transfer, when write data0 in SDI the same data appears in SDO.

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