MSPM0G3507: What is the max UART RX timeout ?

Zane Wei

Part Number: MSPM0G3507

Tool/software:

Hi Team,

How to understand Highest possible value? If RXTOSEL = 0xF, how to calculate timeout value? It not clear it based on SYSCLK or UARTCLK?

Best Regards,

Zane

over 1 year ago

0 Helic Chi over 1 year ago

TI__Genius 17947 points

Hi, Zane

You can refer to syscfg, 1 = 1 UART clock source cycle.

If using 32.768kHz as UART clock source, Rx Timeout 1 = 30.52us.

Regards,

Helic

0 Zane Wei over 1 year ago in reply to Helic Chi

TI__Intellectual 1665 points

Hi Helic,

It too short for customer application, they want to set 1ms rx timeout at least. If use 32.768K as UART clock source, the max timeout value is 450ns. My customer use 4M UART clock source, do we have some methods to enlarge timeout value?

Thanks!

Best Regards,

Zane

+1 Helic Chi over 1 year ago in reply to Zane Wei

TI__Genius 17947 points

Hi, Zane

If using 4MHz as UART clock source, maximum delay time is 250ns * 15 = 3.75us.

Customer can set a software-controlled 1ms timer.

Clear this timer when Rx is triggered.

Rx time out is triggered when timer zero interrupt is called.

Regards,

Helic

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MSPM0G3507: What is the max UART RX timeout ?