AL21 Logic Diagram
Up Keypad
VEBU_2.9
VBOOST VEBU_1.8
BackLight
VBOOST
FLASH
CellSRAM
TFT
(write,blue,re VEBU_2.9
128MBits
16MBits
64K
VEBU_1.8
d)
3.0V 3.0V
130*130
LIGHT_DISP
LIGHT_2
D0-D15
Hall
KeyBoard
D0-D15
LCD_CS A0-A23
DISPLAY Switch
A0-A20
LCD_RS CS_FLASH1
KB0
BackLight
CS_SRAM
LCD_RESET BHE
KB2-KB4
Control BHE
LCD_CLK RD
KB6-KB9
RD
LCD_DAT WR
WR
LCD_ID F_WAIT
LIGHT_LCD
RESET_UC
Low Keypad
MICP2
Keypad
BackLight
VBOOST
TX
BackLight
RX
(write,blue,re LIGHT_1
LIGHT_KB
Control AC_DCD
d)
GND
E-GOLDlite
AC_RTS
1.5V
AC_CTS
MICP1 STEPUP
VDD_RTC
GND_MIC
_SHDN
PMB7860
VDIG_2.65
MICN1/GND_MIC POWER
VDDA_2.65
EPPA1
EPN1_FIL
C166S+TEAKlite
EPP1_FIL
EPPA2 Audio_L
CHARGE_UC
VIBRA_UC
Audio_R
Receiver
WA_DOG
RESET_UC
CCIO I2SWA0
RF_ANT_DET I2SDA0 EPP1
CCCLK
Speaker
RF_AFC I2SCA0
CCRST
Vibra
CCVCC
RF_BAND_SW RTC_INT EPN1
BATT+
RF_DAT SLEEPQ
SPEAKER
RF_CLK KB7
SIM CARD
RF_STR
VDD_RF1
RF_SIN26M
2.9V
VDIG_2.65 VEBU_2.9
VDD_RF2
TVCO
LDO
RF_TXONPA
Salzburg 75
RF_RAMP1
Charger
RF_FE_DCR_GSM
/Twigo 3+75
RF_FE_DCR_DCS
RF Control 1.8V
VEBU_1.8
POWER
VDIG_2.65
Interface Circuit LDO
B6E
VDD_RF1
VDD_RF2
BATT+ BATT+
Lilon-Akku
DC-DC
VBOOST
Convertor
GND GND STEPUP
600mAh
_SHDN
IO Interface