C905
1222-9526 rev. 1
FUNCTIONAL OVERVIEW
Block Diagram Power Distribution
FU
N
C
T
IO
N
A
L O
V
E
R
V
IE
W
CHREG
DCIO
VDD_HV_D
VDD_IO_A
VDD_IO_B
VDD_HV_A
ON/OFF
IN
OUT
VBAT_A
VBAT_D
VBAT_G
VBAT_F
VBAT_B
ECO/Low Pow
CLK_REQ_OUT1
VDD_BEAR
VDD_CLD
VCC
OEn
LED4n
VDD_IO
CLK_REQ_OUT2
VBAT_E
SW
VDD
VCC
PVIN
FB
LDOe
1.80V/200mA
LDOa
2.8V/150mA
LDOc
2.65V/200mA
LDOh
2.75V/100mA
LDOk
2.75V/200mA
LDOg
2.85V/100mA
LDOd
2.65V/200mA
LDO LP
2.2V/7mA
Vibrator
driver
Fuel
gauge
Block
LDOf
2.50V/30mA
VDD_ADC
VDD_AUDIO
VDD_AUXO
I/O
VDD_SPKR
GPADC
CODEC
resistor
Charge
100 mOhm
Vcc
VccB
VccA
VBAT_C
VBUS
VBUS
Charger
VBAT_H
VBAT_K
VBAT_L
DVDD
AVDD
RF Subsystem
Buck
1.2V (1.05)/600mA
VCCPA
VIO_X2
VIO_X1
VDD18A
VDD18_LDO
VDD30
Back-up
capacitor
4.7k
PoP
12
20
VCCDA
VDDIO
VDDIO_PLL
VDDCO_PLL
VCCAD
VCCGPAD
VDDCO
VDDAD
D-VDDQ
F-VDD
10
6
Control
Bluetooth
Subsystem
WLAN Subsystem
VBAT
VACT
VDIG
VANA
DAC1
DAC2
REF
VCONTROL
VBAT
VDDA_AF
VDDANA
2.5 V
1.2 V
BOOST
W-LED driver
VBAT_M
LED5n
VCC1
VLED
VCC_IO
VDD2V7
VDD1V8
ANODE
CATHODE
VBOOST
KEY_LED_C
ATHODE
VCC_N
2
LED1n
LED2n
LED3n
TRICKLE
TRICKLE
V18D
PVIN
V18A
V3A
VccA2
VccD
VccA1
LDO2
1.8V/300mA
LDO1
1.8V/300mA
LDO3
3V/300mA
Switching Reg 3
3.3V/250mA
V33A
VCC
VCONTROL
VCC
VCONTROL
VccA2
VccD
VccA1
VBAT
EN
2
2
1.8 V
VDDIO
VBAT_ACT
VBAT
VBUS
VCC I/O
SIM LDO
1.8/2.85V
SEMC Troubleshooting Manual
100
(124)