Motorola MOTOTRBO XPR 7550e - Figure 8-14. Power Management and Audio Schematic Diagram (3 of 3)

8-16 Circuit Board/Schematic Diagrams and Parts List for 800/900 MHz
5V VBUS 500MA CURRENT LIMIT CIRCUITRY
DC_LIN_VBUS_SUPPLY
0.05OHM
REUNION
0616416H02
E3300
R3321
ISNSN
ISNSP
R3320
Q3320
3
1
2
10K
47K
C3321
DC_LIN_5V_VBUS
VBUS_FET_CTRL
Q3322
5
4
8
7
6
3 2
1
500MA
BELIZE
USB_GPIO MUX
C3330
U3330
DC_LIN_5V
12 9
R3330
R3331
GPIO_GCAI_SEL2
GPIO2_GCAI
GPIO_GCAI_SEL1
GPIO1_GCAI
R3332 & R3333 PLACED
REUNION SLIM GCAI
(REMOVED IN 8900)
USB0_DP_SHIELD
USB0_DM_SHIELD
IO
IO
C3331
Q3327
R3334
USBGPIOSW
DC_LIN_5V
USBGPIO_CTRL
DP_GPIO1_GCAI_SHIELD
DM_GPIO2_GCAI_SHIELD
3
1
2
6 3
10K
47K
IO
IO
7
10
8
5
11
2
4
1
VCC1
GND2
S1
B1_1
A1
B1_0
VCC2
S0
GND1
B0_1
A0
B0_0
5.1V VBUS SUPPLY
LOW - OFF
VGCAIEN
HIGH - ON
____________
C3315
C3380
C3379
C3310
BYPASS_PIN
VGCAIEN
DC_RAWB+
8
4
1
6
BELIZE
800MA
R3314 0613952M53
R3313 0613952N15
REUNION
U3310
C3384
R3313
R3314
ADJ
5
7
2
3
G1
ADJ
GND
SHUTDOWN
BYPASS
INPUT
CTGND
OUTPUT
NC1
NC2
NC
NC
C3378
DC_LIN_VBUS_SUPPLY
Figure 8-14. Power Management and Audio Schematic Diagram (3 of 3)