Table 8. Accessory Connector 2 - Pin Descriptions - Motorola ASTRO Spectra Instruction Manual

Installation: Accessory Connector 2
Pin Signal Name
RX+ (LINE1+)†
1
2 AUD_SHLD
3 TX+ (LINE2+)†
FILT_AUD
4
(DET_AUD)†
5 A+
6 BUSY
7 BUS+
8 UNAVAILABLE
9 VIP OUTPUT 1
10 PTT*
11 TX– (LINE2–)†
12 DIG_GND
13 VIP INPUT 1
REMOTE_RX+
14
(SPKR_HI)†
REMOTE_RX–
15
(SPKR_LO)†
RX– (LINE1–)†
16
17 TX_AUD (AUD_TX)†
18 VIP OUTPUT 3
19 BUS–
20 RESET
21 5V
22 VIP INPUT 3
23 VIP OUTPUT 2
24 MONITOR*
25 SPKR_UNMUTE
Notes: * indicates an active-low condition
† indicates TRC information
NC indicates Not Connected
14

Table 8. Accessory Connector 2 - Pin Descriptions

Receive high used with TRC desksets (TX and RX high for two-wire operation;
RX high for four-wire operation)†
Ground: audio or analog
Transmit high used with all desksets (TX high for four-wire operation)†
RX filtered audio (RX detect or discriminator audio)†
+13.8VDC or battery voltage
Busy line of data bus; 5V logic
High side of bus data: 180° out of phase with BUS–; 5V logic
Not supported
Vehicle interface output port 1
Push-To-Talk initiates a transmission; 5V logic
Transmit low use with all desksets (TX low for four-wire operation)†
Ground for 5V logic signals
Vehicle interface input port 1
Remote deskset speaker high output (CAUTION: grounding this pin will result
in damage to the radio) (Speaker high output)†
Remote deskset speaker low output (CAUTION: grounding this pin will result
in damage to the radio) (Speaker low output)†
Receive low used with TRC desksets (TX and RX low for two-wire operation, RX
low for four-wire operation)†
Transmit audio used for telephone interconnect
Vehicle interface output port 3
Low side of bus data: 180° out of phase with BUS–; 5V logic
Data bus reset line; 5V logic
5V for logic circuits
Vehicle interface input port 3
Vehicle interface output port 2
Allows activation of monitor (used with MRTI telephone interconnect)
Signal indicating if the Consolette is receiving valid audio
Description
6881086C22-B