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TAS6424E-Q1: Handling global faults

miyuki.fukumoto
Prodigy 60 points
Part Number: TAS6424E-Q1


Tool/software:

Hi Team,

Please tell me how to handle Global Fault.
Which of the faults handled by Global Fault1/2 (0x11, 0x12) will automatically recover?
Also, please tell me about the behavior of the device and the register value in the case of automatic recovery.
First, I understand that the fault register is maintained until it is cleared according to the description below.

Global Faults 1 register
・INVALID CLOCK
I believe that it will automatically recover according to the description below.
If it recovers automatically, will the output recover while maintaining the fault flag?

・PVDD OV
・VBAT OV
・PVDD UV
・VBAT UV
I understand that the threshold has hysteresis, but I could not find any description of automatic recovery. Is Clear Fault necessary for recovery?

Global Faults 2
・OTSD
・CHxOTSD
I believe that it will automatically recover if OTSD AUTO RECOVERY (0x21,Bit3) is enabled. If it recovers automatically, will the output recover while maintaining the fault flag?


Regards,
Fukumoto

  • 0
    TI__Guru 53030 points

    Hi Fukumoto

    For simplify, all the fault you listed, the output will auto recovery, while fault flag still maintained. The fault flag always need to use Clear Fault to reset.

    miyuki.fukumoto said:
    ・INVALID CLOCK
    I believe that it will automatically recover according to the description below.
    If it recovers automatically, will the output recover while maintaining the fault flag?

    Yes.

    miyuki.fukumoto said:
    ・PVDD OV
    ・VBAT OV
    ・PVDD UV
    ・VBAT UV
    I understand that the threshold has hysteresis, but I could not find any description of automatic recovery. Is Clear Fault necessary for recovery?

    Output auto recovery, fault flag need to Clear Fault.

    miyuki.fukumoto said:
    I believe that it will automatically recover if OTSD AUTO RECOVERY (0x21,Bit3) is enabled. If it recovers automatically, will the output recover while maintaining the fault flag?

    Yes.

  • 0 in reply to Shadow He
    Prodigy 60 points

    Hi Shadow

    Thank you for your quick reply!


    Is Clear Fault the only way to clear the fault flag?
    For example, what happens when the following reset methods are used?
    ・POR
    ・RESET at Mode Control Register (0x00, bit:7)

  • 0 in reply to miyuki.fukumoto
    TI__Guru 53030 points

    Hi Fukumoto

    miyuki.fukumoto said:
    Is Clear Fault the only way to clear the fault flag?

    Only way recommended.

    miyuki.fukumoto said:
    ・POR

    POR is power off, and restart. 

    miyuki.fukumoto said:
    ・RESET at Mode Control Register (0x00, bit:7)

    All of the register reset to the default value. Need to re-config.