TLIN1441-Q1: Questions about interrupt register clear in SPI mode and the method about active reset

ying li

Part Number: TLIN1441-Q1
Other Parts Discussed in Thread: TLIN1431-Q1,

Dear experts,

1. Is there a way to clear 'h0C register bit by bit?

2. After I clear 'h0C by writting 0xFF, it can not report error anymore. What did i miss?

3. Is there a way for MCU, like by sending a special order or pulling a pin to TLIN1441, to force TLIN1441 send a reset signal?

Looking forwards to your reply!

Best,

Ying

over 1 year ago

0 Eric Schott1 over 1 year ago

TI__Guru 50315 points

Thanks for your question. We're still catching up from the US holiday yesterday, so we will have to get back to you on this tomorrow. Thank you for your patience.

Regards,
Eric Schott

0 Danny Bacic over 1 year ago

TI__Mastermind 25005 points

Ying,

Thanks for reaching out. Register 8'h0E is the interrupt mask register. You could adjust the masking to hide interrupts one by one.

What values do you see in 8'h0C after writing to it?

The reset output serves to indicate a VCC undervoltage or a watchdog failure. One of these events would need to take place for a reset signal to be issued.

Also, please take a look at the newly released TLIN1431-Q1, which offers additional capability over the TLIN1441-Q1.

Best,

Danny

0 ying li over 1 year ago in reply to Danny Bacic

Prodigy 70 points

Thanks danny,

I will give a try to your methods at the following use.

And here is another question about watch dog timer. If watch dog event happend in PIN mode, the watch dog timer will stop or restart?

0 Danny Bacic over 1 year ago in reply to ying li

TI__Mastermind 25005 points

Ying,

For both SPI Control and Pin Control, the timing of the watchdog restarts each time the watchdog is serviced. This helps ensure there is not a timing synchronization issue between the watchdog and the MCU.

Best,

Danny

0 ying li over 1 year ago in reply to Danny Bacic

Prodigy 70 points

But if watch dog event triggered the reset of the MCU, timing synchronization issue will occur, and changing the TLIN1441 to sleep mode will be the only way to stop the watchdog in PIN mode?

+1 Danny Bacic over 1 year ago in reply to ying li

TI__Mastermind 25005 points

Ying,

Apologies if I'm misunderstanding your question. If by "watchdog event" you actually mean a missed watchdog or a "watchdog failure" then yes, the timer resets after each one.

Yes, in pin control you would need to bring the device into Sleep to disable the WD after it has been triggered. Note that the TLIN1441-Q1 watchdog only starts after the first trigger.

Best,

Danny

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TLIN1441-Q1: Questions about interrupt register clear in SPI mode and the method about active reset