Motorola ASTRO XTS 5000 Detailed Service Manual page 105

Troubleshooting Tables: List of Board and IC Signals
U501
Pin No.
A7
B7
A8
B8
A9
B9
C8
A10
B10
C9
D8
C10
E7
D10
D9
E8
E9
E10
F7
F8
F9
F10
E6
G8
G10
G9
6881094C31-C
Table 7-9. U501 GCAP II IC Pinouts (Continued)
Description
XTAL1
XTAL2
PRSC2
LX2
PGND1
FB2
ON
FB1
LX1
PWRON
INT_EXT
PSRC1
WDI
MOSPORTB
ISENSE
CHRGC
SQ_OUT
BPOS
BATTERY
AUX_BAT
AUX_FET
MAIN_FET
PGM2
PGM1
AGND1
REF
To/From Comment
G_32K 32.768 kHz
Square Wave
C514 3.77V
D502 262.144 kHz
Square Wave
GROUND
R501 1.85V
R579
R502 3.77V
D503 262.144 kHz
Square Wave
C529 At Battery
Voltage Level
GROUND
C531 At Battery
Voltage Level
R576 3.0V
C529 At Battery
Voltage Level
NC
NC
NC
C529 At Battery
Voltage Level
NC
NC
NC
NC
C529 At Battery
Voltage Level
C529 At Battery
Voltage Level
GROUND
C528 3.0V
7-21
Accessible
on Vocon?
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
October 14, 2003