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CC3235SF: Powering up target from XDS110 using Uniflash

Part Number: CC3235SF
Other Parts Discussed in Thread: UNIFLASH, , TMDSEMU110-ETH

Hi,

We have designed custom board using CC3235SFMOD. We have placed connector on this board for interfacing XDS110 probe connectors - Debug connector (20-pin) and Aux connector (14 pin). We are expecting power supply to be provided from XDS110 Aux connector. Using CCS we could achieve this by target configuration option in CCS however how to perform similar settings in Uniflash?

  • Hi,

    You should not power CC3235SFMOD from XDS110 debug probe. XDS-110 debug probe can provide up to 400mA@3.3V. But CC3235SF needs 450mA@3.3V during PHY calibration. It may to work, but it is using of the debug probe out of the specification.

    I think there is not such option at Uniflash. Maybe you can try to call dbgjtag from power_on_com.py and power_off_com.py files. Description of dbgjtag you find at power section here.

    Jan

  • Hi Jan,

    If XDS110 cannot provide enough power to CC3235SF then why CCS allows to configure target power from probe? Should we even should not use this configuration in CCS?

    Thanks,

    Pradeep

  • Hi,

    XDS110 debug probe can be used with many other TI MCUs not only CC32xx devices. From this reason is there that option. Generally other MCUs have much lower power consumption.

    Right way is to use XDS110 debug probe with accessory TMDSEMU110-ETH. This allow to power up to 800mA.

    It is likely that CC3235SFMOD will works with your XDS110 debug probe without issue (depends on other chips at your board, etc.). But it is usage of XDS110 debug probe out of specification.

    Jan