Samsung SGH-P270 Service Manual page 53

7-2. Base Band Solution Block Diagram
GSM Block
AERO4221HN/1
FEM
(TRANSIVER Tx, Rx)
RF3159
(PAM)
WCDMA Block
UAA3582HN/C1
(TRANSIVER Tx, Rx)
RF3266
(PAM)
VCC_RX_TX_2.8V VCC_SYN_2.8V
VDD_IO_HIGH_2.9V
VDD_IO_LOW_1.8V
AVDD_2.6V
ADV3V_2.9V
VDD_PLL_1.2V
AVDD_HFA_2.6V
VDD_GSM_CORE_1.2V
VDD_MEM_3G_CORE_1.8V
VDD_USB_3.3V
VCC_SIM_3.0V
MIC_BIAS_2.15V
VCC_KEYLED_3.3V
VDD_MEM_CARD_2.9V
VDD_VIB_3.3V
VCHG / VBAT
EARMICN / EARMICP
EARSPK_R / EARSPK_L
EAR_ADC / EARSW
Con
USBDP / USBDM / VBUS
FM_ANT
TXD1 / RXD1
ONKEYn
RF Block
WIFI Block
26MHz 40MHz
SWL-N10S-1 IRX_TX_P / IRX_TX_N
DCXO
(WIFI MODULE)
QRX_TX_P / QRX_TX_N
LDO
RF_DATA / RF_EN
WIFI_VDD_EN
WIFI CLK / WIFI_INT / WIFI_CS
DCDC
ITX_P / ITX_N / QTX_P / QTX_N
QRX_P / QRX_N / IRX_P / IRX_N
32.768KHz
VBAT_3.7V
THERMISTER
CTRL_VREF_3G_B1
PCF50622HN1/03/N1
(PMU)
IF AUX_ON
JACKIN
SIM
VCHG SIM
Socket
VBUS
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AFC / RAMP
BAND_SEL
RF_EN_3G
AUXMICN
AUXMICP
MES_BATT
VF
MAIN BAT
PNX5217EL/633/3A
(Baseband Chip)
RSTON
BB3G_REF_ON
I2C(SDA / SCL)
32KHZ_DIGIT
PMU_INT
SIMOFF
SIM
SIMIO / SIMCLK / SIMRSTn
7-2
RCV_P
RCV_N
GPIOA29 RCV_SEL ISL54050
MAX9877EWP
O
(AUDIO AMP)
HFR1 HFR_P
COM1
C AMP_P
INA1
O
HFR_N
HFR2
COM2
AMP_N
C INA2
EAR1 EAR1 INB1
EAR2
EAR2 INB2
SDA/SCL I2C(SDA1/SCL1)
I2C
CAM_Y(0:7) / VSYNC / HSYNC / PCLK / MCLK /
LCD
LD(0:7)
L_CS
L_WR
2.2" QCIF
LCD_RESET
MEMORY
(K5D1G12ACD
HMP_SDA(0:12)
-D075)
SDRAM
HMP_SDDQ(0:15)
512Mbit
NAND FLASH
SMP_NFI_D(0:7)
1Gbit
ANL FM_AUDIO_L
ANR
FM_AUDIO_R
MICP
MIC_P MAIN
MIC
MICN
MIC_N
DD IOM_DD BC51E129B14-IKH-E4S
(Bluetooth)
DU IOM_DU
C
KEY_ROW(0:4)
KEYPAD
KEY_COL(0:4)
FCI_DATA / FCI_CLK / FCI_CMD
T-FLASH
FCI_CD
Block Diagrams
RCV
Main SPK
OUT-
SPK400
SPK401
OUT+
HPL EARSPK_L
HPR EARSPK_R
Earphone
EARMIC_N
EARMIC_P
C
SDA /SCL
2M CMOS 1/4"
C
CIF
1
FM RADIO FM_ANT
IF Con