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3. TECHNICAL BRIEF
3.14 Power Block Interface
The E-GOLDvoice integrated power management unit (PMU) supports direct connection to battery
(DCB). That means all supply voltages needed are generated on-chip with integrated linear voltage
regulators. The input of these linear voltage regulators is the battery voltage. The external memory and
SIM card supply is provided by the on-chip voltage regulators. Table 144 is an overview of the internal
generated supply voltages.
The integrated power management also provides the control state machine for system start up,
including start up with discharged batteries, trickle charging and system reset control. After system
start up several methods are implemented for active and idle power saving.
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
(1%)
(1608)
(1608)
C112
1u
2V0_VRTC
W_LED_FBP
J14
XO
A8
A9
XOX
C114
1u
W_LED_FBN
J12
G15
VREFP
VSS1
B8
VSS2
B9
VSS4
J8
K8
VSS5
VSS6
K7
F10
VSS8
M8
VSS9
B11
VDD_LRF1V5
VDD_LRF2V5
F15
VDD_LRTC
K12
VDD_LSIM
M11
VDD_MAIN1
G9
VDD_MAIN2
J7
G10
VDD_PLL
VDD_RTC
R6
R7
VDD_SIM
H13
VBAT_1
VBAT_2
F12
H15
VBAT_3
VBAT_4
H14
F6
VDDP_IO
L4
VDDP_MEM
VDD_LANA
K15
VDD_LBUF
J13
G12
VDD_LD1
VDD_LIO
J10
K10
VDD_LMEM
D12
REXT
IREF
G13
AGND
G14
2V8_VIO
2V8_VMEM
1u
C118
C115
1u
GND102
R106
22K
1V5_VRF0
220n
C119
2V85_VSIM
2V85_VSIM
2.2u
C105
2V8_VBUF
2V0_VRTC
VBAT
VD1
FB101
VD1
2V8_VIO
1u
C111
2V8_VMEM
C110
1u
1u
C113
C107
NA
GND101
2V5_VANA
C117
1u
0
R105
VRF1
22u
C116
C120
4.7u
Figure 3-14-1 Power Block interface