Motorola ASTRO XTL 5000 Basic Service Manual page 120

9-2
Table 9-1. J2 Accessory Connector Signal and Voltage Descriptions (Continued)
Pin
4 TXD
5 RXD
6 USB-
7 USB+
8 RESET
9 BUSY
10 CTS
11 RTS
12 USB PWR
13 CHAN ACT
14 GROUND
15 EMERGENCY
16 PTT*
17 ONE WIRE
18 VIP OUT 1
19 VIP OUT 2
20 SPKR+
June 11, 2003
Function
RS232 Transmit Data
RS232 Receive Data
USB - Data
USB + Data
SB9600 RESET
SB9600 BUSY
RS232 Clear-To-Send
RS232 Request-To-
Send
USB Power
Channel Activity
Ground
Emergency
Push To Talk
One-Wire data
Vehicular Interface
Output
Vehicular Interface
Output
Speaker +
Basic Troubleshooting: Introduction
Description
This is part of the 4-wire RS232 interface to
external data accessories, programming
cables, etc.
This is part of the 4-wire RS232 interface to
external data accessories, programming
cables, etc.
This is part of the 2-wire USB differential data
bus for future USB accessories.
This is part of the 2-wire USB differential data
bus for future USB accessories.
This is part of the Motorola SB9600
communications bus to connect external
devices.
This is part of the Motorola SB9600
communications bus to connect external
devices.
This is part of the 4-wire RS232 interface to
external data accessories, programming
cables, etc.
This is part of the 4-wire RS232 interface to
external data accessories, programming
cables, etc.
This is the supply (5V) for the USB data bus,
supplied by the USB accessory/cable.
This is an output used for indicating detection/
unsquelching of a qualified received signal.
Used as a ground for any reference on rear
connector.
This pin must be connected to ground by
jumper on accessory cable if emergency is
disabled, even if disabled by CPS. If enabled,
this line must be grounded via a switch, which
is normally closed. The emergency debounce
time is programmable via CPS.
Pulling this line to ground will activate PTT
function, activating the AUX_MIC input.
To be used for identification of future smart
accessories/cables.
High voltage output used for enabling relays
used for accessories such as horn/lights.
High voltage output used for enabling relays
used for accessories such as horn/lights.
Used along with SPKR- to connect an external
speaker. The audio PA is a bridge amplifier
with a 3.2-ohm minimum impedance.
6881096C73-O