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PicoZed SDR power-only carrier

liuf_stanford

We're developing an application using the PicoZed SDR which needs only power inputs from the carrier - no IO (ethernet, USB, HDMI, etc...) required. Since we don't want to re-invent the wheel, are there any such designs which already implement this functionality? If not, are there any good resources out there which might help us design our own carrier?

 

I know Avnet no longer sells PicoZed SDR units, but I'm posting here since replies on the EngineerZone forum are slow (and mostly useless).

 

Thanks!

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    I'm just going by memory (I designed my custom carrier about a year ago), but I'm pretty sure you're correct that there's no need to do any sort of "handshake" between the two.  There are a few status and control pins, but they're pulled up where necessary, so ignoring them just works (with the sequencer update).

     

    I don't know the answer about the VIN and GND pins... I would assume that they're all tied together on the board, since the schematics for the module don't say otherwise.  The connectors are rated for 800mA per pin, so you'll need to watch your total current if you don't connect all of them... but it sounds like you're looking for a pretty minimal application, so you probably won't have high power requirements.  JX2 has 5 VIN pins vs. 4 VIN pins on JX1... so if you really don't care about any of the other pins, I'd go with JX2 for the extra power pin.  Otherwise, JX1 has the JTAG pins, DONE flag, etc.

     

    Pat

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  • 0

    I'm just going by memory (I designed my custom carrier about a year ago), but I'm pretty sure you're correct that there's no need to do any sort of "handshake" between the two.  There are a few status and control pins, but they're pulled up where necessary, so ignoring them just works (with the sequencer update).

     

    I don't know the answer about the VIN and GND pins... I would assume that they're all tied together on the board, since the schematics for the module don't say otherwise.  The connectors are rated for 800mA per pin, so you'll need to watch your total current if you don't connect all of them... but it sounds like you're looking for a pretty minimal application, so you probably won't have high power requirements.  JX2 has 5 VIN pins vs. 4 VIN pins on JX1... so if you really don't care about any of the other pins, I'd go with JX2 for the extra power pin.  Otherwise, JX1 has the JTAG pins, DONE flag, etc.

     

    Pat

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