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TMS570LS3137-EP: Question about pin functionality

Part Number: TMS570LS3137-EP

For TMS5703137CGWTQEP:

Pin name – Test, Pin #U2 – What function does this pin provide? Is it associated with JTAG test circuitry or is it for vendor manufacturing test only and not to be used?

Pin name – Kelvin_GND, Pin #L2 – I’m assuming this GND is only used if a crystal circuit provides OSCIN and can be left open if an external oscillator provides OSCIN. Is this assumption correct?

  • Hello Gregory,
    - TEST pin is used to enable special modes for production test purposes. It is recommended to connect it to GND when designing boards.

    - Kelvin_GND pin, when external oscillator is used, has to be tied to oscillators GND. Oscillator GND should be common with other grounds of device.

    Best regards,
    Miro