Enhanced Control Head - Pin Function - Motorola MTM800 User Manual

CONNECTOR PIN FUNCTIONS
33 RS232_DTR
34 RS232_CTS
35 RS232_RX
36 RS232_RI
37 OPTION_DET
38 9V3
39 NC
40 HANDSET AUDIO
Table A-3 Transceiver Pin Assignment of the Expansion Board Connector (40 pins)

Enhanced Control Head - Pin Function

MMP top view
Figure A-4 View of the Enhanced Control Head with GCAI MMP Connector
GCAI Pin #
1 1-WIRE
2 GPIO_3
3 SPEAKER
4 GPIO_2
5 GND
6 OPT 5V
7 MIC +
8 GPIO_1
9 GPIO_4
10 GPIO_0
Table A-4 Pin assignment GCAI - FRONT – Mobile Microphone Port (MMP) / *): Optional
Data Terminal Ready
Clear To Send
RX-Data
Ring Indicator
Option Detect; for future applications
Regulated 9V3
Not Connected
Handset Audio to earpiece
*) For Expansion Head Connection only.
Default Alternative
Function Functions
1-WIRE 1-WIRE
PTT GP Input or Output
SPEAKER SPEAKER
GPIO_2 INPUT GP Input or Output
GND GND
HIGH Impedance OPT 5V
MIC + MIC +
GPIO_1 INPUT GP Input or Output
HOOK GP Input or Output
GPIO_0 INPUT GP Input or Output,
PWR ON
Functions
when USB
1-WIRE
GP Input or Output
SPEAKER
DATA -
GND
VBUS
MIC +
DATA +
GP Input or Output
GP Input or Output,
PWR ON
A - 5
Functions
when RS232
1-WIRE
RS-232-RTS *
SPEAKER
RS-232-RXD *
GND *
OPT 5V
MIC +
RS-232-TXD *
RS-232-CTS *
GP Input or Output,
PWR ON