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TCAN4550-Q1: What does "W1C" mean?

Yoshiki Ochi
Genius 10305 points

Part Number: TCAN4550-Q1

Hi team, 

1) Does "W1C" mean "Clear on Write" shown in "Table 8-13. Status Field Descriptions"?
2) What does "1" in "W1C" mean? 

"Table 8-23. Legend" says "W" is "Write" and "C" is "Clear on Write" but does not mention "W1C" code. 

Regards,
Ochi

  • 0
    TI__Guru 53535 points

    Hi Ochi-san,

    "W1C" means "Write 1 to clear". This marks register fields that can be set (turned to 1) by hardware, but can be cleared (set to 0) by the user with a SPI write. If one of these bits is set to 1 to indicate a status or interrupt state, the MCU can clear the bit by writing a 1 to the register field. This will cause the value to reset to 0. Clearing such register fields should be done after the MCU has read the status so that any following interrupts may be registered as new occurrences. 

    Let me know if you have any more questions.

    Regards,
    Eric Schott