MSPM0G3507: 6.144Mbps baudrate support

Hisao Uchikoshi

Genius 14880 points

Part Number: MSPM0G3507

Hi Experts,

Is it possible to support 6.144Mbps UART baudrate?

Regards,

Uchikoshi

0 Cash Hao11 over 2 years ago

Hi,

Yes, the UART baudrate for MSPM0G series is upto 10Mbps.

Best regards,

Cash Hao

0 Hisao Uchikoshi over 2 years ago in reply to Cash Hao11

Hi Cash Hao,

Can you calcurate the error at 6.144Mbaud when using 80MHz internal clock source?

Regards,

Uchikoshi

+1 Cash Hao11 over 2 years ago in reply to Hisao Uchikoshi

Hi,

UARTCLK = 80 MHz

Oversample =3

Baudrate = 6144000 bit/s

BRD = 80M/3/6144000 = 4.3402777

UARTx.IBRD.DIVINT = 4

UARTx.FBRRD.DIFRAC = INT(.3402777*64+0.5) = INT(22.27) = 22

Actual Baudrate = UARTCLK /( Oversample+( DIVINT+( DIFRAC/64))) = 80M/(3*(4+(22/64))) = 6,139,088.73

Calculated error = (ActualBaudRate - targetBaudRate) / targetBaudRate = (6,139,088.73-6144000)/ 6144000 = -0.079%

Best regards,

Cash Hao

0 Hisao Uchikoshi over 2 years ago in reply to Cash Hao11

Great! Thank you!!

Regards,

Uchikoshi

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