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Microphone Pinout?

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skyler440
New User
Posts: 5
Joined: Tue May 16, 2017 6:36 pm

Microphone Pinout?

Postby skyler440 » Wed Dec 20, 2017 7:26 am

I have been searching all over the web for a pinout for the front microphone connector on the XTL series radio.

I have found all sorts of information on the rear connector but not much has appeared with regards to the circular front connector. Does anybody have this microphone pinout?

Thanks

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jackhackett
Posts: 1432
Joined: Tue Jun 10, 2003 8:52 am

Re: Microphone Pinout?

Postby jackhackett » Thu Dec 21, 2017 11:10 am

Here's what I have for it...

Pin 2 - PTT Hi
Pin 5 - Gnd/Mic Low
Pin 7 - Mic Hi
Pin 9 - HUB
Pin 10 - PTT Low

The microphones usually have 5 & 10 connected inside the cable plug.

If you look at the socket from the front of the radio you should see a 1 with a arrow pointing to the top left pin, that is pin 1.
The pinout follows like this:

--1------2---
-3--------4-
----5--6----
-7--------8-
--9-----10--

I hope that makes sense.

fineshot1
Posts: 963
Joined: Wed Oct 12, 2005 5:13 am

Re: Microphone Pinout?

Postby fineshot1 » Thu Dec 21, 2017 11:46 am

here is what i found - hope this helps

XTL MMP Port Pinout from Schematic Doc
M5 Control Head Main Board, Page 3-15


1 - ONE_WIRE
2 - PTT
3 - SPKR
4 - USB_D- / RXD
5 - GND
6 - VBus
7 - MIC_HI
8 - GPIO_1 / USB_D+ / TXD
9 - HUB / KEYFAIL
10 - GPIO_0 / PWR_ON



Figure 3-10. MMP Connector Pin Numbers
Page 3-14

Doc 6871771L01-A (8/6/07)
Detailed Service Manual
XTL2500 M5 Control Head

NOTE: MMP stands for Mobile Microphone Port
fineshot1
NJ USA

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jackhackett
Posts: 1432
Joined: Tue Jun 10, 2003 8:52 am

Re: Microphone Pinout?

Postby jackhackett » Thu Dec 21, 2017 6:19 pm

Hmm... I'm wondering about that pin 10 now, my other pins matched fineshot's but not that one. I had drawn up a diagram of it a few years back, don't remember where I got the info. Maybe it was for a TRBO mic. Will look into it.

Stick with 5 for ground/mic lo/ptt lo then, that should be safe.

Wish I could edit the original post, seems to be a time limit on editing though.

User avatar
jackhackett
Posts: 1432
Joined: Tue Jun 10, 2003 8:52 am

Re: Microphone Pinout?

Postby jackhackett » Fri Dec 22, 2017 7:21 am

Okay, it looks like my info was from the wiring for the HMN1090 microphone used on XTL radios. Those mics do have the white wire (pin 10) and the black wire (pin 5) connected inside the cable. Inside the mic black is mic_low and white is ptt_low.


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