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RM46, XDS200 emulator, and ARM 10 pin connector

William Moffitt
Prodigy 200 points

Can we use the XDS200 emulator (Spectrum Digital) on a Hercules RM46 processor using the ARM 10 pin adapter that comes with the emulator?

http://emulators.spectrumdigital.com/files/XDS200_QSG.pdf Table 2 lists the connections for the ARM10 adapter.


I can't figure out what TDIS(GND) on the RM46 process is, nor do I understand what the ARM10 pin adapter nRESET signal is - is it output from the XDS200, or input to it?  Does it come from the RM46?

TIA

  • 0
    TI__Expert 4580 points

    Hello:

    We have received your post and we will come back to you soon.

    Regards.

  • 0 in reply to Enrique Lizarraga
    TI__Guru 69070 points

    William,

    TDIS is a pin on the connector that you connect to GND on your board, but might have a pullup in the emulator.

    This lets the emulator detect that you've disconnected (the DIS in TDIS) your emulator from your target board (the "T" in TDIS) so that CCS can give you a meaningful error message.  

    See:  http://processors.wiki.ti.com/index.php/JTAG_Connectors

    Q: What is TDIS used for?

    • A: XDS emulators can use this pin to detect when the target is disconnected from the emulator. It is usually a pull-up in the emulator and GND on the target. The emulator senses the removal of GND.

    For some good information on JTAG headers.

     

  • 0 in reply to Anthony F. Seely
    Prodigy 200 points

    Anthony,


    Thank you for the TDIS info. 

    I am using the XDS200 with ARM10 adapter on a custom RM46 board.   I have verified all of the ARM10 signals which are mapped to the RM46 chip, but still get this error:

    IcePick: Error connecting to the target: (Error -2131 @ 0x0) Unable to access device register. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.1.232.0)

    I know the emulator works as it functions properly on my RM48K eval board via the TI20 pin  connector.