Figure 4.2-2. Universal (Side) Connector; Figure 4.2-3. Vocon Connector J650; Table 4.2-1. Option Select Functions - Motorola XTS 2500 Service Manual

4.2-14
Most of the signals are extensions of circuits described in other areas of this manual. However, there
are two option select pins used to configure special modes: Option Select 1 and Option Select 2.
These pins are controlled by accessories connected to the universal connector. Connections to the
universal connector and J650 are shown in Figure 4.2-2. and Figure 4.2-3., respectively.
Table 4.2-1 outlines their functions as defined at the universal connector.
Signal Name
RTS_USB_PWR
RS232_TX_USB+
RS232_TX_USB-
LH_DATA_KEYFAIL
External PTT
No Function (Normal)
Man Down
External Speaker
February 14, 2012
OPT_SEL1
EXT_MIC
OPT_SEL2
RTS
SB9600_BUSY
RS232_DOUT/USB_D+
SB9600_DATA/KEYFAIL

Figure 4.2-2. Universal (Side) Connector

J650-Pin #
GND 1, 11, 19, 20
INT_SPK+ 2
INT_SPKR- 3
OPT_SEL1 4
EXT_SPK+ 5
EXT_MIC 6
OPT_B+_VPP 7
OPT_SEL2 8
SPKR_COM 9
10
LH_BUSY 12
CTS 13
14
15
16
NC 17
INT_MIC 18

Figure 4.2-3. VOCON Connector J650

Table 4.2-1. Option Select Functions

FUNCTION
UHF1 Detailed Theories of Operation: VOCON Functional Blocks
1
2
EXT_SPKR
OPTB+/VPP
SPKR_COM
GND
CTS
RS232_DIN/USB_D-
12
13
MAEPF-27431-O
1
J650
Option Select 1 Option Select 2
0
1
1
0
20
MAEPF-27467-O
0
1
0
1
6816985H01-F