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RVI ICE box can't connect to target.

Xuewen He
Note: This was originally posted on 25th August 2010 at http://forums.arm.com

As we know, JTAG connect target by TDI/TMS/TCK/TDO/nTRST pin in general.
Now I try ICE box to connect target failed, but TDI/TMS/TCK/TDO/nTRST pin is fine because I can connect target successfully by JLink.
So I want to know whether other pins of JTAG cable port cause connection failed? In my board, the pins 11/17/19/2 are floating. They are RTCK/DBGRQ/DBGACK/Vsupply.

And how will I modify the board to let ice box work well?

Any comment will be great appreciated.
Xuewen
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  • Note: This was originally posted on 25th August 2010 at http://forums.arm.com

    Thank you, Joseph,

    But I am using cortex-M3; both JTAG and SWD work well with IAR/J-Link, but still fail by ICE box.

    Now the configuration of JTAG port is following:

    1 VTref  ---- VCC
    3 nTRST ---- pull-up
    5 TDI  ---- pull-up
    7 TMS ---- pull-up
    [color="#FF0000"]9 TCK ---- pull-up (also tried pull-down)
    11 RTCK ---- floating ( tried to connect with TCK)[/color]
    13 TDO ---- no pull-up or pull-down
    15 nSRST ---- pull-up
    [color="#FF0000"]17 DBGRQ ---- floating
    19 DBGACK ---- floating[/color]

    2 Vsupply ---- pull-up to VCC
    4,6,8,10,12,14,16,18,20 ---- GND

    Do you think whether something wrong with the set of JTAG port?

    Best Regards.

    Xuewen
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  • Note: This was originally posted on 25th August 2010 at http://forums.arm.com

    Thank you, Joseph,

    But I am using cortex-M3; both JTAG and SWD work well with IAR/J-Link, but still fail by ICE box.

    Now the configuration of JTAG port is following:

    1 VTref  ---- VCC
    3 nTRST ---- pull-up
    5 TDI  ---- pull-up
    7 TMS ---- pull-up
    [color="#FF0000"]9 TCK ---- pull-up (also tried pull-down)
    11 RTCK ---- floating ( tried to connect with TCK)[/color]
    13 TDO ---- no pull-up or pull-down
    15 nSRST ---- pull-up
    [color="#FF0000"]17 DBGRQ ---- floating
    19 DBGACK ---- floating[/color]

    2 Vsupply ---- pull-up to VCC
    4,6,8,10,12,14,16,18,20 ---- GND

    Do you think whether something wrong with the set of JTAG port?

    Best Regards.

    Xuewen
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