The specs on the Athena say that this connector is an HTC proprietary port so the pin outs may not be the same. Do so at your own risk. Or get the pin outs for the cable you're wanting and send the specs to HTC support to see if they work?
EDIT: I know it may not be what you want but you could use the 4in1 cable currently available with the SVideo port and just use an SVideo to composite cable adapter?
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