Xiaomi RedMi 3 block diagram
4321
D
ANTENNA
U2801 U2803
U1
SKY77916-21
C
VREG_L7_1P8
VBAT_RF
(From U401)
B
ANTENNA
ANTENNA
A
RFFE1_CLK
RFFE1_DATA
ANT SW+2G PA
U3301
DRX_MODE_SEL1
(From U401)
DRX_MODE_SEL2
DRX_MODE_SEL3
VDD_RF_SWITCH
FL5101
VPH_PWR
VREG_L7_1P8
RFFE1_CLK
RFFE1_DATA
U3302
SKY13418
DRX_B40
DRX_B7
DRX_B41
DRX_B1
DRX_B39
DRX_B3
DRX_B8
U5101
B34_PRX
B39_PRX
TRX_B8
TRX_B5_BC0
TRX_B1
TRX_B2
TRX_B3
TRX_B7
TRX_B40
TRX_B41
B34B39_TX
U4801
QFE2101
WTR0_PDET_IN
VPA_APT
VBAT_RF
VREG_L7_1P8
RFFE1_CLK
RFFE1_DATA
U3601
U3602
U3603
U3605
U3606
U3607
U3
VDD_WTR_2P05EXT_GPS_LNA_EN(FROM U401)
APT
U3103
U3105
U3101
U3110
U3106
U3107
U3002
U3003
U3004
U2902
U2901
SKY77643-21
WTR0_TX_DA4_GSM_LB
WTR0_TX_DA5_GSM_HB
U3604
U3608
FL1
U2702
B7_TX
B3_PA_OUT
B2_PA_OUT
PA
VDD_RF_SWITCH
LTE_BPI_OUT74
VDD_RF_SWITCH
LTE_BPI_OUT76
B1_PA_OUT
B5_BC0_PA_OUT
U3108
B8_PA_OUT
WTR0_PRX_HB1
WTR_PAIN_B1/B2/B3/B4/B34/B39
WTR_PAIN_B5/B8/B20
WTR_PAIN_B7/B38/B40/B41
WTR0_DRX_HB1
(FROM U401)
(FROM U401)
WTR0_DRX_HB2
WTR0_DRX_MB1
WTR0_DRX_MB2
WTR0_DRX_LB8
WTR0_GNSS_IN
WTR0_PRX_MB1
WTR0_PRX_LB2
WTR0_PRX_LB3
WTR0_PRX_MB2
VDD_RF_SWITCH
LTE_BPI_OUT75
WTR0_PRX_MB3
WTR0_PRX_HB2
PRX_B41/B40
GPS
WTR4905
DRX TX PRX
U2
PRX DRX GPS
TX
POWER
WTR0_PRXBB_I_P
WTR0_PRXBB_Q_P
WTR0_DRXBB_I_P
WTR0_DRXBB_Q_P
WTR0_GPSBB_I_P
WTR0_GPSBB_Q_P
WTR0_TXBB_I_P
WTR0_TXBB_I_M
WTR0_TXBB_Q_P
WTR0_TXBB_Q_M
WTR0_GSM_TX_PHASE
(TO U3302)
(TO U3604)
(TO U3108)
(TO U3608)
(TO U1/U2901/U4801)
RFFE5_CLK
RFFE5_DATA
WTR0_XO_IN
VDD_WTR_2P05
VDD_WTR_1P225
DRX_MODE_SEL1
DRX_MODE_SEL2
DRX_MODE_SEL3
LTE_BPI_OUT74
LTE_BPI_OUT75
LTE_BPI_OUT76
EXT_GPS_LNA_EN(TO U5101)
RFFE1_CLK
RFFE1_DATA
(FROM U402)
PRXDRXGPS
TX
GPIO
U401
MSM8939
DDR/EMMC POWER
SDC1_CLK
SDC1_CMD
MSM_RESOUT_N
SDC1_DATA[0:7]
EBI0_CS_N[0:1]
EBI0_CKE[0:1]
EBI_CLK_T/C
EBI0_DQS_T[0:3]
EBI0_DQS_C[0:3]
EBI0_DM[0:3]
EBI0_CA[0:9]
EBI0_DQ[0:31]
VREG_S1_1P15
VREG_S2_1P15
VREG_S3_1P3
VREG_L3_1P15
VREG_L5_1P8
VREG_L6_1P8
VREG_L7_1P8
VREG_L12_SDC
VREG_L13_3P075
VREG_L14_UIM1
VREG_L15_UIM2
VREG_EXT_1P2
VREF_LPDDR3
VREG_EXT_1P15
TX
RX
TX&RX
供电
时钟
U1501
LPDDR3+EMMC
VREG_EXT_1P2
VREG_L5_1P8
VREG_L8_2P9
VREF_LPDDR3
D
C
B
A
1 2 3 4
4321
VREG_S1_1P15
VREG_S2_1P15
VREG_S3_1P3
VREG_S4_2P1
VDD_WTR_1P225
VREG_EXT_1P2
VREG_L3_1P15
VDD_WTR_2P05
VREG_L5_1P8
VREG_L6_1P8
VREG_L7_1P8
VREG_L8_2P9
VDD_WCN_3P0
VREG_L10_2P8
VREG_L11_SDC
VREG_L12_SDC
VREG_L13_3P075
VREG_L14_UIM1
VREG_L15_UIM2
VREG_L16_UIM3
VREG_L17_2P85
VREG_L18_2P7
VREF_LPDDR3
D
J3
J9
MIC402
Rec
U1903
U5201
Q2401
XTAL_19M_IN
XTAL_19M_OUT
KYPD_PWR_N
PM_RESIN_N
VBAT
BAT_CON_TEMP
BAT_CON_ID
MIC_IN2_P
CDC_HS_DET
CDC_HPH_L
CDC_HPH_R
(FROM U401)
VPH_PWR
AUDIO_PA_EN
(FROM U401)
MIC_IN1_P
GND_MIC
MIC1_IN3_P
CDC_EAR_P
CDC_EAR_M
CBL_PWR_N
SMB_INT
BUCK_SMB_I2C_SCL
BUCK_SMB_I2C_SDA
Y401
USB_HS_D_M
VPH_PWR
VBAT
KEY_VOL_UP_N
J10
CDC_HPH_REF
J12
USB_VBUS_IN
HP MIC-1
EAR_DET
CDC_HPH_L_OUT
CDC_HPH_R_OUT
VPH_PWR LCD_2P85_EN
SPKR_OUT_P
SPKR_OUT_M
MIC1_P_C
MIC1_M_1
MIC_BIAS1
U5
CHARGER
(TO U401)
U1101
FM_ANT
VPH_PWR
LED_RED
LED_GREEN
LED_BLUE
USB_HS_ID(TO U401)
USB_HS_D_P
(TO U4901)
VREG_L16_UIM3
(FROM/TO U401)
LED_I2C_SCL
LED_I2C_SDA
(TO U401)
(TO U401)
USB_HS_D_P
USB_HS_D_M
C
XTAL
BAT
SMPS
AUDIO
LDO
U402
PM8916
CLOCK
GPIO
MPP
AUDIO
MSM_RESIN_N
PS_HOLD
SPMI_CLK
SPMI_DATA
BBCLK_MSM_EN
BB_CLK
SLEEP_CLK
WCN_XO_CLK
WTR_XO_CLK (TO U2)
EXT_BUCK_EN_GPIO_4
PWM_OUT
VREG_L6_1P8
(TO U4901)
UIM_BATT_ALM
VDD_PX_BIAS_MPP
VREF_DAC_MPP
(TO U901)
CDC_PDM_CLK
CDC_PDM_SYNC
CDC_PDM_TX
CDC_PDM_RX0
CDC_PDM_RX1
CDC_PDM_RX2
(FROM J3)
(TO U1903)
(TO U5201)
(TO U1101)
(FROM/TO U1101)
(FROM J12)
(FROM/TO J12)
(FROM/TO J12)
(TO U8103)
KEY_VOL_UP_N
LCD_2P85_EN
AUDIO_PA_EN
LED_I2C_SCL
LED_I2C_SDA
USB_HS_ID
USB_HS_D_P
USB_HS_D_M
CONTROL
CLOCK
AUDIO
GPIO
USB
U401
MSM8939
SDCARD/SIM
MCAM SCAM
FLASH
SDC2_SDCARD_CLK
SDC2_SDCARD_CMD
SDC2_SDCARD_D[0:3]
UIM2_CLK_1
UIM2_RESET
UIM2_DATA_1
UIM1_CLK_1
UIM1_RESET
UIM1_DATA_1
UIM1_PRESENT
(TO Q3)
CAM0_MCLK
MCAM_RST_N
MIPI_CSI0_CLK_P
MIPI_CSI0_CLK_N
MIPI_CSI0_LANE_P[0:3]
MIPI_CSI0_LANE_N[0:3]
CAM_I2C_SCL
CAM_I2C_SDA
CAM_VDD_EN
CAM_I2C_SDA
CAM_I2C_SCL
CAM1_MCLK
SCAM_RST_N
SCAM_PWDN
MIPI_CSI1_CLK_P
MIPI_CSI1_CLK_N
MIPI_CSI1_LANE_P[0:1]
MIPI_CSI1_LANE_N[0:1]
CAM_FLASH_TORCH_MODE
CAM_FLASH_TORCH_EN
INFARED_DRV
J11
SDCARD/SIM
J403
MCAM
J402
SCAM
U2102
Q2
VDD_SD
VREG_L15_UIM2
VREG_L14_UIM1
VREG_L6_1P8
VREG_L10_2P8
CAM_2P8_AVDD
CAM_1P2_DVDD
CAM_2P8_AVDD
VREG_L6_1P8
VPH_PWR
U701
LED2101
VPH_PWR
VPH_PWR
VREG_L5_1P8
Q3
U2001
U6
UIM1_PRESENT
(FROM U401)
VPH_PWR
VREG_L17_2P85
VPH_PWR
D
C
U4
INT_CW2015
B
VPH_PWR
VREG_EXT_1P15
U8103
EXT_BUCK_EN_GPIO_4 (FROM U402)
EXT_BUCK_VSEL
GPIO
SENSOR LCD TP
SENSOR_I2C_SDA
SENSOR_I2C_SCL
ALSP_INT_N
U1701
M-Sensor
U2201
ALSP
VREG_L6_1P8
VREG_L17_2P85
VREG_L17_2P85
B
ANTENNA
FL4902
WL_BT_RFIO_FIL
FM_ANT(FROM J10)
WCN_XO_CLK(FROM U402)
VREG_S3_1P3
VREG_L5_1P8
VREG_L7_1P8
VDD_WCN_3P0
U4901
WCN3620
WCSS_BT_CTRL
WCSS_BT_SSBI
WCSS_BT_DAT_STB
WCSS_FM_SSBI
WCSS_FM_SDI
WCSS_WLAN_CLK
WCSS_WLAN_SET
WCSS_WLAN_DATA[0:2]
WLAN_BB_I_P
WLAN_BB_I_M
WLAN_BB_Q_P
WLAN_BB_Q_M
BT
FM
WLAN
A
GYRO_INT_N
LCD_DC_EN1
LCD_DC_EN2
LCD_TE0
LCD_RST_N
MIPI_DSI0_CLK_N
MIPI_DSI0_CLK_P
MIPI_DSI0_LANE_N[0:3]
MIPI_DSI0_LANE_P[0:3]
LCD_IC0
LCD_IC1
TP_I2C_SCL
TP_I2C_SDA
TP_INT_N
TP_RST_N
U2202
G-Sensor
U903
J4
LCD
J902
VREG_L6_1P8
VPH_PWR
VSP
VSN
VREG_L6_1P8
LEDA
LEDK
VREG_L17_2P85
U901
VPH_PWR
PWM_OUT
(FROM U402)
A
1 2 3 4
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