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xil-se / xildebug_hw

Hardware files for XilDebug
https://github.com/xil-se/xildebug_sw
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Ideas for future revisions #1

Open kbeckmann opened 6 years ago

kbeckmann commented 6 years ago

Let's keep this issue as a discussion board for future features. I'll start.

Level shifter

Let's add a level shifter, e.g. FXMA108 that was used in https://github.com/whitequark/Glasgow.

We could simply hook it up to the DUT_VDD_IN pin, so we ensure that the DUT and the voltage we shift to are the same. Might be problematic with the actual current consumptions though. I'm just a bit worried that it might affect the current measurement.

Edit: Now that I think about it, it should be fine by hooking it up to DUT_VDD_IN - this is what we use as a reference voltage anyway, so it should be ok to sink current on this side of the resistor network.

kbeckmann commented 6 years ago

Cap draining mosfet

Something to help kill off the left over capacitance in the DUT when cutting off power to it.