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4. Circuit Description
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
11
SIMCLK
Non-Level-Shifted SIM Clock Input
12 SIMVCC SIM
Enable
13
SIMSEL
High for Vsim=3.0V, Low for Vsim=1.8V
14
SIO
Level-Shifted SIM Bidirectional Data Input/Output
15
SRST
Level-Shifted SIM Reset Output
16
SCLK
Level-Shifted SIM Clock Output
17,21,46 DGND
Digital
Ground
18 VM
Memory
Supply
19
VBAT
Battery Input Voltage
20
VIO
Digital IO Supply
22
VRTC
Real Time Clock Supply
23
RSTCAP
Reset Delay Time Capacitance
24
/RESET
System Reset, Low Active
25 VTCXO TCXO
Supply
26
AVBAT
Battery Input Voltage for Analog Block Circuits
27 VA
Analog
Supply
28 AGND Analog
Ground
30
VREF
Reference Voltage Output
31
SRCLKEN
VTCXO and VA Enable
32
PWRKEY
Power on/off Key, Internal Pull High to VBAT
33
PWRBB
Power on/off Signal from Microprocessor
34
VIBRATOREN
Vibrator Driver Enable, Internal Pull Low to DGND
35
ALERTEREN
Alerter Driver Enable, Internal Pull Low to DGND
36
LEDEN LED
Driver Enable, Internal Pull Low to DGND
37,40 PGND
Power
Ground
38
VIBRATOR
Vibrator Driver Input
39
ALERTER
Alerter Driver Input
41
LED
LED Driver Input
42 BATUSE Battery Type Selection, High for NiMH, Low for Li-ion, Internal Pull Low to DGND
43
BATDET
Battery Detect Input, Low for Battery Connected, Internal Pull High for Battery
Disconnected
44 V
ASEL
High for VA enabled with VTCXO, Low for VA enabled with VD, Internal Pull
Low to DGND
45
VMSEL
High for Vm=2.8 V, Low for Vm=1.8V, Internal Pull High to VIO
47
VBAT
Battery Input Voltage
48
VCORE
Digital Core Supply