TRS-80 Model 100: Phone port pinout

Dave Dunfield dave04a at dunfield.com
Fri Feb 4 15:44:01 CST 2005


At 14:53 04/02/2005 -0500, you wrote:
>Does anybody have a pinout for the phone port on a TRS-80 Model 100?
>
>Thanks,
>Tom

>From page 207 of user manual:

         8 U 7
        3  6  1
         5 2 4

  1   TL    Conventional Telephone Unit
  2   GND   Logic Ground
  3   RxMD  Direct connection to TEL line (RING)
  4   RxMC  Accoustic coupler connection (MIC)
  5   TxMC  Accpustic coupler connection (Speaker)
  6   VDD   - No description bit it should be easy to figure out -
  7   TxMD  Direct connection to TEL line (TIP)
  8   RP    Ringing Paluse (as spelled in manual)

All of the connectors and sockets are shown - you can download
the manual from my site.

Regards,
-- 
dave04a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Collector of vintage computing equipment:
                http://www.parse.com/~ddunfield/museum/index.html





More information about the cctalk mailing list