Hello all, im trying to hook up a DTMF tone generator for our local siren that im trying to hook up to the accessory port on my xpr7550. I cut the end off a mic and was wondering if someone can tell me the PTT wire and the 2 external MIC wires.
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XPR7550 Acessory port pinout
- Thread starter Ray450R
- Start date
Xpr7550 Pinout
For those who think it's easier to annoy you than to Google 'Xpr7550 pinout' themselves.
Do you know if the GPIO for mic is power or ground?Xpr7550 Pinout
For those who think it's easier to annoy you than to Google 'Xpr7550 pinout' themselves.letmegooglethat.com
There is 3 GPIO’s, do we know if its ground controlled or power controlled?
Do not quote or hold me to it as I am not the sharpest tool in box. From looking at the CPS it looks as the GPIO pins are logic level hi or lo in the CPS. My understanding and it is very little that would indicate the GPIO pins are looking for a range of voltage to go from Hi to Lo. Someone with a lot more knowledge of it may be able to help. I just know how to use the PTT button on my radio's and listen.
