SPI0 bus of C6748LCDK

Trinh Trung

i use API function: void SPIClkConfigure(unsigned int baseAdd, unsigned int moduleClk, unsigned int spiClk, unsigned int dataFormat) to declare SPI0 bus.

I input values that baseAdd = SOC_SPI_0_REGS, moduleClk = 187500000 and spiClk = 2000000, dataFormat = SPI_DATA_FORMAT0. As a result, SPI0 bus =2MHZ. Is it true? and Do i have to use PLL to configure SPI0 bus ?

over 13 years ago

0 Rahul Prabhu over 13 years ago

TI__Guru** 116950 points

The SPI module clock is derived from the PLLC so you will need to configure the PLLs to configure appropriate SPI Clock. What SPI driver are you using? Most software provided assumes the DSP clock to be running at 300 Mhz or 456Mhz.

Regards,

Rahul

0 Trinh Trung over 13 years ago in reply to Rahul Prabhu

Prodigy 120 points

i use driver of Starterware for C6748. I only configure PLL0 for DSP clock 300MHz when using AISgen sofware => SPI0 bus is 150000000.

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SPI0 bus of C6748LCDK