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TMS570LS3137 Based HDK Question - CPLD and Serial Port #2

Hello All,

Can I get the CPLD source code for U29 - the XC2C32A CPLD on the '3137 HDK board?

And also, does any of the port 2 logic go through that CPLD?  I know the FTDI chip is there - but
there's quite a bit of I/O going between all of this - and it would be great just to get a quick explanation
vs. having to trace all of that out.

It's nice that the port 2 serial can be driven with the SCI as long as JTAG isn't active.

Thanks In Advance.
johnw

  • Hi John,

    The CPLD code is available as part of the XDS100v2 download, which you can get here: processors.wiki.ti.com/.../XDS100

    The HDK had to remap the pins, because the reference design used a QFP version of the XC2C32A while the HDK uses the smaller bga pkg. but the verilog code is the same.

    The LIN port (pins A7/B7) which normally is used as a SCI - UART goes directly to the FTDI chip - and not through the CPLD.

    The FTDI chip enumerates as separate devices for COM port and emulator and you do not need the emulator to be connected in order to use the COM port. It can be - but doesn't have to be... they're independent.
  • Hello Anthony,

    Hmmm - I thought from looking at the schematic there were some shared I/O's - I will look closer at that.

    Thanks,
    JohnW.