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

    You might need to try to lower the operation frequency of the TCK. 1 MHz perhaps. This is configurable in the connection settings.

    You can also try connect RTCK to TCK, pin 2 to VCC.

    Another possible issue is the voltage level.

    If you are using Cortex-M0, please check if the chip support JTAG. Some Cortex-M0 microcontrollers support Serial-Wire protocol only.  When using JLink, it might be connecting using serial wire protocol rather than JTAG.  With RV-ICE, connecting using Serial wire requires the use the the LVDS probe v2.

    regards,
    Joseph
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  • Arm Employee Badge
    Note: This was originally posted on 25th August 2010 at http://forums.arm.com

    You might need to try to lower the operation frequency of the TCK. 1 MHz perhaps. This is configurable in the connection settings.

    You can also try connect RTCK to TCK, pin 2 to VCC.

    Another possible issue is the voltage level.

    If you are using Cortex-M0, please check if the chip support JTAG. Some Cortex-M0 microcontrollers support Serial-Wire protocol only.  When using JLink, it might be connecting using serial wire protocol rather than JTAG.  With RV-ICE, connecting using Serial wire requires the use the the LVDS probe v2.

    regards,
    Joseph
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