MSPM0G3507: BAUD RATE ISSUE FOR OPEN DRAIN PINS

Ankush

Part Number: MSPM0G3507

Hello support,

iam working with MSPM0G3507 ,i have connected the uart tx and rx to PA0,PA1 (open drain pin )with 3.3V pull up for both pins my uart is working from 9600 to 59600 but it is not working beyond .and my clock frquency is 32MHZ maximum frequency iam using is there setteing or any voltage add on .please do refer and support me to work in higher frequency.

thank you.

2 months ago

0 Luke Ledbetter 2 months ago

TI__Mastermind 26910 points

Hi Ankush,

What value pull-ups are you using? Do you have an oscilloscope capture of the UART transmission?

0 Ankush 2 months ago in reply to Luke Ledbetter

Intellectual 590 points

HI Luke,

Iam using 10k pull ups to 3.3V and i have taken screen shots of logic analyzer command reply for the command in 115200 baud rate analog command line

0 Tyler Morgan 2 months ago in reply to Ankush

TI__Prodigy 510 points

Hello Ankush, what is the expected behavior of the code? I just tested a G3507 with the same configuration as described, and saw expected behavior. Could you show me what the scope looks like on lower baud/what is expected? I'm assuming the scopes provided were unexpected behaviors.

Tyler

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MSPM0G3507: BAUD RATE ISSUE FOR OPEN DRAIN PINS