User Manual

MM-014763-001, Rev. G
96
Table 11-1: M5300/M7300 Option Cable CA-012349-001 Interconnections
44-PIN I/O
CABLE
CONNECTOR
P1 PIN
SIGNAL NAME TO/FROM DESCRIPTION
18 INP1 P4 pin 21
Digital Input 1. Active = Ground. Inactive = Open.
Use
P4 pin 1 for ground.
For use as a PTT input with OpenSky
“rear panel
software”
R15A and later, send the following AT
command to the radio: AT@PTT_INPUT1. Also see P3
pin 3.
For ECP, configure via the “Auxiliary Input 1” in Radio
Personality Manager’s (RPM’s) External I/O dialog Box.
2 OUT1 P4 pin 22
Digital Output 1 (open-collector, 500 mA / 30 V maxi-
mum). Use P4 pin 1 for ground.
For ECP, configure via the “External Output Control Line
1” in Radio Personality Manager’s (RPM’s) External I/O
dialog Box.
29 TXENB+ P4 pin 23
Transmit Enable B+ Output (open-
collector). Active/Radio
Transmitting = Ground. Inactive/Not Transmitting = Open.
(not normally used).
27 EXTMIC P4 pin 24
External/Auxiliary Mic Audio Input.
Use P4 pin 17 for
ground.
For use as an aux mic audio input with OpenSky
“rear
panel software” R15 and later
, send the following AT
command to the radio: AT@MIC_REAR_INPUT1. Also
see P4 pin 15.
28 SWA+ P4 pin 25 Switched A+ DC Power Output (not normally used).
32 GPS_NMEA_RX P5 pin 2
NMEA-Formatted GPS Receiver Position Data
Serial
Data Output.
31 GPS_NMEA_TX P5 pin 3
NMEA-Formatted GPS
Receiver Module Initialization
Data Serial Data Input.
7 GND P5 pin 5
Ground for GPS Serial Data Signals (fused on radio’s
PK
Board at 3.15 amps).
11 IGNITION Yellow Wire Unused/Spare ignition sense input.
33 — 44 — (no connections)
These twelve pins of P1 (i.e., the 44-
pin connector on the
rear of the radio) are not used/not connected
when
M5300/M7300 Option Cable CA-012349-001 is con-
nected to P1.