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TMS570LS3137: Sharing Same SPI pinout On TMS570LS3137

user6220345
Intellectual 440 points
Part Number: TMS570LS3137
Other Parts Discussed in Thread: HALCOGEN

Hello,

On TMS570LS3137 SPI2CS  resides on N3 pin but also SPI2ENA/SPI2CS  and SPI2ENA/SPI2CS shares D3 on the contrary SPI4 has no CS pin. What is the point existing so many CS pin for MIBSPI and SPI. Could you explain me the usage of SPI2, shortly SPI's

I hope, i transmit my considiration properly.

Thanks

  • 0
    TI__Guru**** 196346 points

    Hello,

    SPI2 has two chip-select pins (CS[0] and CS[1]) to support 2 SPI slaves. The SPI2 chip select 1 is multiplexed with SPI enable pin (D3). More SPI chip-select pins, more SPI slave devices can be supported by this SPI module. Each SPI slave device needs one chip select.

    SPI4 has only 1 chip-select pin (CS[0]) which is multiplexed with N2HET1[3]/N2HET2[10] pins (U1). 

    If you want use D3 and U1 as SPI chip select pins, please configure the pinmux to enable those two pins.

    Please use HALCoGen to configure SPI and Pinmux for your application. Two SPI examples are in HALCOGen Help.