CCS/TMS320F28335: how to get value of SPIBRR

Joshi

Intellectual 630 points

Part Number: TMS320F28335

Tool/software: Code Composer Studio

If I put SPIBRR value is =0x007F,then what will be the SPI_CLK_Frequency?

over 8 years ago

0 Gautam Iyer over 8 years ago

Guru 192875 points

Hi Mahesh

mahesh joshi said:
If I put SPIBRR value is =0x007F,then what will be the SPI_CLK_Frequency?

You can refer SPI user guide SPRUEU3A Section 2.1.4 SPI Baud Rate Register (SPIBRR).

Regards,

Gautam

0 Veena Kamath over 8 years ago

TI__Mastermind 32695 points

Hi Mahesh,

Please refer to the Baud Rate Selection section in the SPI chapter in the device TRM for more details on the baud rate calculation.
For your configuration, the SPI baudrate would be LSPCLK/128.

Regards,
Veena

0 Joshi over 8 years ago in reply to Gautam Iyer

Intellectual 630 points

If I put SPIBRR value is =0x007F,then there will be the SPI_CLK_Frequency=292 khz or 0.292 mhz,Is it corrector or not? after doing calcilation considering LSPCLK=37.5 mhz.

0 Gautam Iyer over 8 years ago in reply to Joshi

Guru 192875 points

mahesh joshi said:
If I put SPIBRR value is =0x007F,then there will be the SPI_CLK_Frequency=292 khz or 0.292 mhz,Is it corrector or not? after doing calcilation considering LSPCLK=37.5 mhz.

Correct.

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CCS/TMS320F28335: how to get value of SPIBRR