Motorola ASTRO XTSTM 4000 Detailed Service Manual page 120

7-20
U1304
Description
Pin No.
F11 VBUS2_SENS
H10 VBUS1
C14 VBUS1_CMD
E12 VBUS1_SENS
B13 VBUS_SUPPLY
K4 V08_O
K3 V08_I
L9 V10_GND
M6 V10_O
J10 V10_I
L1 V09_O
P6 V07_O
P3 V06_O
N5 V04_O
P4 V03_O
N4 V02_O
F12 SW5_VOUT
G11 SW5_PHASE
E13 SW5_SUMCOMP
E14 SW5_VSENSE
F13 SW5_VDDHV
D13 SW5_VDD
L14 SW2_GND
J13 SW2_VOUT
J14 SW2_LX
K14 SW2_VCCS
J12 SW2_VCC
H14 SW1_GND
H12 SW1_VOUT
F14 SW1_PHASE
H13 SW1_DH
May 28, 2008
Table 7-8. U1304 MAKO Pinouts (Continued)
To/From
No Connect
No Connect
No Connect
No Connect
No Connect
VCC5
SWB+
GROUND
C1321
C1333
C1322
C1323
V2
C1326
V1.55
V1.875
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
GROUND
VSW2
VSW2
VSW1
R1317
GROUND
VSW1
L1306
No Connect
Troubleshooting Tables: List of Board and IC Signals
Comment
5V
Battery Voltage
Level +/- 5%
2.89V
1.55V
1.875V
1.875V
1.875V
3.8V
3.8V
229.682 kHz
Square Wave
Accessible
on
Mainboard?
No
No
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
No
6871620L01-C