Xiaomi REDMI 3S Schematics
5 4 3 2 1
D
C
D
C
B
B
A
Block Diagram
Title
Size
Sheet
Name
12345
A
Rev
ofSheetDate:
5 4 3 2 1
MSM8937 GPIO Configuration
GPIO_0
GPIO_1
D
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_12
C
GPIO_13
GPIO_14
GPIO_15
GPIO_16
GPIO_17
GPIO_18
GPIO_19
GPIO_20
GPIO_21
GPIO_22
GPIO_23
GPIO_24
B
GPIO_25
GPIO_26
GPIO_27
GPIO_28
GPIO_29
GPIO_30
GPIO_31
GPIO_32
GPIO_33
GPIO_34
GPIO_35
A
GPIO_36
GPIO_37
GPIO_38
GPIO_39
GPIO_40
NC
NC
NC
WDOG_DISABLE
UART_MSM_TX
UART_MSM_RX
NC
NC
NC
NC
TP_I2C_SDA
TP_I2C_SCL
NC
NC
SENSOR_I2C_SDA
SENSOR_I2C_SCL
NC
NC
NC
NC
ACC_SPI_MOSI
ACC_SPI_MISO
ACC_SPI_CS
ACC_SPI_CLK
LCD_TE0
NC
CAM_MCLK0
NC
CAM_MCLK2
CAM_I2C_SDA0
CAM_I2C_SCL0
NC
NC
NC
FLASH_STROBE_NOW
MCAM1_PWDN
NC
FORCE_USB_BOOT
NC
SCAM_PWDN
SCAM_RST_N
GPIO_41
GPIO_42
GPIO_43
GPIO_44
GPIO_45
GPIO_46
GPIO_47
GPIO_48
GPIO_49
GPIO_50
GPIO_51
GPIO_52
GPIO_53
GPIO_54
GPIO_55
GPIO_56
GPIO_57
GPIO_58
GPIO_59
GPIO_60
GPIO_61
GPIO_62
GPIO_63
GPIO_64
GPIO_65
GPIO_66
GPIO_67
GPIO_68
GPIO_69
GPIO_70
GPIO_71
GPIO_72
GPIO_73
GPIO_74
GPIO_75
GPIO_76
GPIO_77
GPIO_78
GPIO_79
GPIO_80
GPIO_81
SCAM_ID
ACCL_INT1_N
ALSP_INT_N
MAG_RST_N
NC
NC
NC
NC
UIM_BATT_ALM
NC
UIM1_DATA
UIM1_CLK
UIM1_RESET
NC
UIM2_DATA
UIM2_CLK
UIM2_RESET
NC
NC
LCD_RST_N
LCD_ID
NC
APP_BOOT_FROM_ROM
TP_RST_N
TP_INT_N
GP_PDM_A0
SDCARD_DET_N
NC
CDC_PDM_CLK
CDC_PDM_SYNC
CDC_PDM_TX
CDC_PDM_RX0
CDC_PDM_RX1
CDC_PDM_RX2
BT_SSBI
WL_CMD_DATA_2
WL_CMD_DATA_1
WL_CMD_DATA_0
WL_CMD_SET
WL_CMD_CLK
FM_SSBI
GPIO_82
GPIO_83
GPIO_84
GPIO_85
GPIO_86
GPIO_87
GPIO_88
GPIO_89
GPIO_90
GPIO_91
GPIO_92
GPIO_93
GPIO_94
GPIO_95
GPIO_96
GPIO_97
GPIO_98
GPIO_99
GPIO_100
GPIO_101
GPIO_102
GPIO_103
GPIO_104
GPIO_105
GPIO_106
GPIO_107
GPIO_108
GPIO_109
GPIO_110
GPIO_111
GPIO_112
GPIO_113
GPIO_114
GPIO_115
GPIO_116
GPIO_117
GPIO_118
GPIO_119
GPIO_120
GPIO_121
GPIO_122
FM_DATA
BT_CTL
BT_DATA
NC
NC
NC
NC
NC
NC
KEY_VOL_UP_N
NC
NC
NC
NC
NC
NC
NC
NC
RFFE1_CLK
RFFE1_DATA
NC
NC
NC
GRFC1_SEL
NC
GRFC3_SEL
NC
GRFC5_SEL
GRFC6_SEL
GRFC7_SEL
GRFC8_SEL
GRFC9_SEL
GRFC10_SEL
GRFC11_SEL
GRFC12_SEL
NC
EXT_GPS_LNA_EN
CH0_GSM_TX_PHASE_D0
RFFE5_CLK
RFFE5_DATA
NC
GPIO_123
GPIO_124
GPIO_125
GPIO_126
GPIO_127
GPIO_128
GPIO_129
GPIO_130
GPIO_131
GPIO_132
GPIO_133
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
PMI8937 MPP Configuration
NC
MPP_1
GREEN_LED
MPP_2
FLASH_STROBE_NOW
MPP_4
PM8937 GPIO/MPP Configuration
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
NC
SDCARD_DET_N
UIM_BATT_ALM
NC
NC
NC
NC
NC
MPP_1
MPP_2
MPP_3
MPP_4
GPIO MAP
VDD_PX_BIAS_MPP_1
NC
VREF_DAC_MPP_3
QUIET_THERM
D
C
B
A
Title
Sheet
Name
Size
12345
Rev
ofSheetDate:
5 4 3 2 1
Internal PU
USB Current Limit
Internal PD
100K
HT32
142
143
144
123
111
80
101
81
140
104
88
100
92
55
102
124
86
97
73
61
74
62
42
122
109
99
78
79
115
U0501-A
USB_IN_1
USB_IN_2
USB_IN_3
USB_DM
USB_DP
USB_ID
USB_CS
WIPWR_DIV2_EN
WIPWR_CHG_OK
DC_SNS
DC_EN
USB_EN
USB_SNS
SHDN
CHG_EN
CHG_VBAT_SNS
BATT_ID
BATT_THERM
CS_MINUS
CS_PLUS
BATT_MINUS
BATT_PLUS
VDD_MSM_IO
GND_REF_CHG
GNDC19
GNDC18
GNDC14
GNDC15
GNDC20
130
USB_MID_1
131
USB_MID_2
132
USB_MID_3
128
GND_CHG_1
129
GND_CHG_2
141
GND_CHG_3
94
FLASH_OUT_1
FLASH_OUT_2
FLASH_OUT_3
PGOOD_SYSOK
USB_ID_RVAL1
USB_ID_RVAL2
10V
95
96
Place C0504 close to
BOOT_CAP and VSW_CHG
105
BOOT_CAP
106
VSW_CHG_1
107
VSW_CHG_2
108
VSW_CHG_3
116
VSW_CHG_4
DIODE-SCHOTTKY-PMEG4010ESB/RB161QS-40
117
VSW_CHG_5
118
VSW_CHG_6
119
VSW_CHG_7
120
VSW_CHG_8
114
VPH_PWR_1
127
VPH_PWR_2
138
VPH_PWR_3
139
VPH_PWR_4
113
CHG_OUT_1
125
CHG_OUT_2
126
CHG_OUT_3
137
CHG_OUT_4
91
CHG_LED
89
WIPWR_RST
103
43
BUA
90
112
85
R_BIAS
135
V_ARB
98
VAA_CAP
110
GND_FG
93
SYSON
10V
PMI_VDD_CAP net is 5VDC,cap is 0603.
Do not use 0402 as may derate to -80%.
C0503
4.7uF;10V
C05040.027UF
C0520
1.0uF
C0522
1.0uF
4.7uF
Place C0502 close to USB_MID
C0502
4.7uF
Place C0503 close to
FLASH_VDD
L0501
1.0uH
D0501
NSR05F40NXT5G
This diode saves
around 200mW at
higher charging
current
C0506
10uF_NF
VDD_CAP
HT4
HT33
Isat depends on the different applications: charging current/flash current
21
TO PM_PON_1
UIM_BATT_ALM
HT1
HT2C0509
VFLASH
VPH_PWR
C0505
HT34
CHG_OUT
SYSOK_PMI8937
VREF_BAT_THERM
22uF
CHG_LED
D
C
B
D
VBUS_USB_IN
4.7uF
PMI PIN
connection on device without Wipower
CHG_OK
Pull up to VDD_CAP with 51kohm
DVI2_EN
Pull down to GND with 0ohm
GPIO2
No Connect
For parallel charging: Connects to SMB EN pin.
Do NOT pull up to VDD_CAP
VDD_CAP
C
CHG_OUT
VBAT
B
TP-0.8MM
TP33
TP-0.8MM
TP-1.0MM
TP-1.0MM
TP34
TP31
HT38
BAT_N_SNS
J501
1
2
3
4
5
6
7
89
BTBS-BM25-4S/2-V(51)
BATID Vaue
XWD 68K
FMT 10K
DS+Samsung 30K
DS+LG 49.9K
GY 100K
TP32
1
1
1
16
15
14
13
12
11
10
1
TVS501
12
TP-1.0MM
TP36
1
VBAT
NF
C501
C502
4.7uF
TVS502
TVS504
12
connection on device with Wipower
Stark PRU CHG_OK
Stark PRU DIV2_EN
10Kohm pull down to gnd
For parallel charging: Connects to SMB EN pin.
Do NOT pull up to VDD_CAP
R0508
51K
R0506
0.01
VREF_BAT_THERM
R501
68K
C503
NF
C504
TVS505
CHG_OK
Default is CHG_EN pin low enables power on charging
Route PIN73,61 from the sense resistor using
differential signal techniques, thin traces are sufficient
Route PIN74,62 from the battery terminals using
differential signal techniques, thin traces are sufficient
BAT_CON_ID
BAT_THERM
NF
47K
R0501
Not support Wipower in this SCH
Pull up value the same as battery NTC,normally 10K
USB_PMI_DM
USB_PMI_DP
HT31 C0501
USB_ID
R0503
100K_NF
CHG_OK
VBUS_USB_IN
VREG_L5_1P8
VBAT
BAT_CON_ID
BAT_THERM
CHG_OUT
VBAT
BAT_N_SNS
VBAT
VREG_L5_1P8
R0504
NF
R0507
0
R0505
Remote sense of battery
differential pair
differential pair
A
BATID Resistor Pull down to GND in BAT Module.
BAT_THERM NTC(68K B=4250) Pull down to GND in BAT Module.
PMI8937 CHARGER
A
BATTERY CONNECTOR
Title
Sheet
Name
Size
12345
Rev
ofSheetDate:
5 4 3 2 1
D
C
B
Prevent leakage on ship mode
Ship Mode PMI.Resin 1.8V and PM.Resin 0V
PM_RESIN_N
KYPD_PWR_N
PM_RESIN_N1
SPMI_CLK
SPMI_DATA
KYPD_PWR_N1
PM_PON_RESET_N
PM_RESIN_N1
D0601
KYPD_PWR_N1
D0602
GREEN_LED
FLASH_STROBE_NOW
VPH_PWR
Backup, may change to other MPP as needed
NTC0601 placement Ref to 80-VU794-17
Away from heat devices, such as MSM PMU Charger
VREG_L16_1P8
R0603
100K
QUIET_THERM
NTC0601
1%
C0615
0.1uF_NF
100K
CLK_IN is not used
To external SMB charger
68
38
39
134
69
50
40
41
44
18
19
75
63
22
34
10
47
57
49
45
87
U0501-B
RESIN
SPMI_CLK
SPMI_DATA
KYPD_PWR
PS_HOLD
CLK_IN
NC1
NC2
NC3
NC4
NC5
GPIO_1
GPIO_2
MPP_1
MPP_2
MPP_3
MPP_4
VDD_ADC_LDO
GNDC4
GNDC3
GNDC17
VREG_ADC_LDO
DVDD_BYP
AVDD_BYP
REF_BYP
GND_REF
GNDC10
GNDC12
GNDC13
GNDC16
GNDC21
GNDC22
GNDC23
D
U0501-C
Depends on if having boost bypass
22nF
C0614
R0601
VPH_PWR
VFLASH
VPH_PWR
PGND_WLED
VPH_PWR
VREG_L5_1P8
VPH_PWR
Place C0609 close to PIN3
LCD_CABC
For AMOLED,Not needed in LCD mode.
leave float if not used
VPH_PWR
1M
+/-1%
47nF for LCD, 1.5nF for AMOLED
HT3
C0606
10uF
HT9
0.047UF
C0608
0.1uF
C0609
10uF
From MSM IO or codec
C0603
46
0.47UF
C0602
54
0.1uF
C0601
53
58
59
56
GNDC6
66
GNDC9
67
76
77
65
GNDC8
82
121
133
136
HT7
0.47UF
0.1uF
C0604
HT8
R0602
GP_PDM_A0
100K
60
VDD_TORCH
72
VDD_FLASH_1
84
VDD_FLASH_2
7
VDD_WLED
8
GND_WLED
28
VDD_DIS_P
C0605
15
DIS_N_CAP_REF
26
GND_DIS_N_REF
25
VDD_1P8_DIS_N
DISplay
3
VDD_DIS_N
HT5
30
WLED_CABC
internal PD
51
DIS_SCTRL
11
HAP_PWM_IN1
12
HAP_PWM_IN2
48
VDD_HAP
36
GND_HAP
23
GNDC1
37
GNDC2
52
GNDC5
64
GNDC7
70
GNDC11
FLASH_LED1
FLASH_LED2
VREG_WLED
VSW_WLED
GND_WLED_I
WLED_SINK1
WLED_SINK2
WLED_SINK3
WLED_SINK4
VDIS_P_FB
VDIS_P_OUT
GND_DIS_P
VSW_DISP_1
VSW_DISP_2
VDIS_N_FB
VDIS_N_OUT_1
VDIS_N_OUT_2
VSW_DIS_N_1
VSW_DIS_N_2
HAP_OUT_P
HAP_OUT_N
71
83
6
9
31
21
20
32
33
29
5
4
16
17
27
1
13
2
14
35
24
F_LED1
OVP Progamable MAX 31.7V
D0605
L0601
10UH
HT12
Place C0612 close to PIN5,dedicated trace from PIN4
to C0612 GND and then a dedicated via to main GND at C0612
L0602
4.7uH
Place C0613 close to PIN1,13
L0603
4.7uH
The current for LCD/AMOLED is different,
possible to choose the inductor with smaller Isat
based on the different application.
B0601
Support LRA/ERM
1000ohm
1000ohm
B0602
C0618
10PF_NF
C0607
HT10
4.7uF
35V
R0604
0
C0611
10uF
VPH_PWR
HT11
LCD_BL_LED_K1
LCD_BL_LED_K2
LCD_VSP
C0612
HT6
22uF
VPH_PWR
10uF
C0610
HT35
22uF
C0613
HT36
HT37
Place C0607 close to PIN6,dedicated trace from PIN8
to C0607 PGND and then a dedicated via to main GND at C0607
PGND_WLED
LCD_BL_LED_A
PMI8937 WLED has the function of output isolation/short circuit protection,
need add external FET and diode if this function is needed.
LCD_VSN
HOUTP
HOUTN
C
B
A
PMI8937 Control/Interface
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
A
Rev
ofSheetDate:
5 4 3 2 1
D
X0701
XTAL-19.2M-OZ19270001
4
PM_XO_THERM
Note:
XO GND should connect to XOADC_GND pin using thin
trace, then via to main ground plane under the
C
XO_THERM cap ground
Note:
Reserve placeholder C0705 for BBCLK signal quality
Place R0701 C0705 near PM8937
B
3
NC
1
2
GND
XOADC_GND
1
TP121
TP-0.5MM
1
TP122
TP-0.5MM
TP123
TP-0.5MM
TP124
TP-0.5MM
1
1
VREG_L16_1P8
KYPD_PWR_N
SYSOK_PMI8937
PM_PON_RESET_N
MSM_PS_HOLD
PM_RESIN_N
SPMI_CLK
SPMI_DATA
WTR_XO_CLK
WCN_XO_CLK
MSM_BBCLK1_EN
BBCLK1
R0703
100K
+/-1%
PM_XO_THERM
R0701
0
C0705
33PF_NF
C0704
1nF
U0701-B
85
3
2
102
143
182
129
128
115
75
62
42
40
43
26
6
44
119
109
1
13
NC_WSP_TST1
XTAL19M2_IN
XTAL19M2_OUT
KYPDPWR_N
PON_1
PON_RESET_N
PS_HOLD
RESIN_N
CBLPWR_N
SPMI_CLK
SPMI_DATA
RFCLK1
RFCLK2
LNBBCLK
BB_CLK1_EN
BBCLK1
BBCLK2
XO_THERM
XOADC_GND
XOISO_GND1
XOISO_GND2
PM8937
HK
AVDD_BYP
VPH_PWR
VCOIN
OPT_1
127
81
VPP
63
132
87
Note:
VPP can be left floating in 1N1 design.
VREG_L16_1P8
R0702
122
PA_THERM
Internal PD
76
TEST_IN
123
VREF_LPDDR2
R0704
74
SLEEP_CLK1
14
GND_XO
GND_XO
GND_RF_CLK
15
GND_RF
59
REF_BYP
REF_BYP
58
REF_GND
0.1uF
C0703
XOADC_GND
HT13
HT14
HT17
VPH_PWR
SDCARD_DET_N
C0701
HT15
1.0uF
C0706
33PF_NF
C0707
10uF
UIM_BATT_ALM
100K
PA_THERM
VREF_LPDDR3
SLEEP_CLK
C0702
33PF_NF
0
HT16
U0701-C
UI
PM8937
22
GPIO_01
R0750
38
GPIO_02
NF
50
GPIO_03
36
GPIO_04
49
GPIO_05
25
GPIO_06
141
GPIO_07
152
GPIO_08
MPP_01
MPP_02
MPP_03
MPP_04
VDD_PX_BIAS_MPP_1
137
R0705
151
VREF_DAC_MPP_3
131
89
QUIET_THERM
Note:
Only even MPP's can be configured as current sinks and
odd MPP's as analog output buffers.
R0706
30K
U0701-F
GND_NC
PM8937
57
GND1
71
GND2
72
GND3
73
GND4
83
GND5
84
GND6
86
GND7
97
GND8
98
GND9
99
GND10
100
GND11
110
GND12
114
GND13
136
NC1
138
NC2
142
NC3
VREG_L5_1P8
240k
R0705
R0706
ADC_in
240k
82.5k
41.2k
22k
11k
3.92k
project
30k
0.2v
A12A
30k
0.48v
A12B
30k
A12C
0.758v
A12W
30k
1.038v
1.317v
30k
A12L
30k
1.591v
S88047E1
D
C
B
Note
GND_REF MUST connect directly to C0703 and then to
main GND with a dedicated via.
GND_XO and GND_RF MUST connect directly to C0920
and C0921 respectively and then connect to main GND
with dedicated via.
A
A
PM8937 Control and MPP/Cloc
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
ofSheetDate:
Rev
5 4 3 2 1
D
U0701-D
VREG1
VPH_PWR VREG_S1_1P225_RE
C0803
GND_S3
GND_S4
2.2uF
HT18
C0804
2.2uF
HT19
C0805
2.2uF
HT20
C0806
2.2uF
HT21
[8]
C0807
2.2uF
HT22
C0808
2.2uF
HT23
C0801
22uF
C0802
22uF
C
B
39
VIN_S1
65
GND_S1_1
66
GND_S1_2
77
VIN_S2_1
78
VIN_S2_2
79
VIN_S2_3
103
GND_S2_1
104
GND_S2_2
105
GND_S2_3
164
VIN_S3_1
176
VIN_S3_2
154
GND_S3_1
166
GND_S3_2
178
GND_S3_3
9
VIN_S4
11
GND_S4_1
24
GND_S4_2
156
VIN_S5_1
170
VIN_S5_2
183
VIN_S5_3
144
GND_S5_1
145
GND_S5_2
171
GND_S5_3
167
VIN_S6_1
179
VIN_S6_2
169
GND_S6_1
181
GND_S6_2
PM8937
VFB_S1
VSW_S1_1
VSW_S1_2
VFB_S2
VSW_S2_1
VSW_S2_2
VSW_S3_1
VSW_S3_2
VSW_S3_3
VSW_S4_1
VSW_S4_2
VSW_S4_3
VFB_S5
VSW_S5_1
VSW_S5_2
VFB_S6
VSW_S6_1
VSW_S6_2
VSW_S6_3
VREF_NEG_S5
VREF_NEG_S6
64
51
52
88
90
91
153
165
177
10
23
37
116
157
158
101
155
168
180
130
113
L0801
1.0uH
L0802
1.0uH
Sense node from output caps
L0803
2.2UH
L0804
2.2UH
L0805
0.47uH
L0806
0.47uH
VREG_S1_1P225
VREG_S2_1P225_RE
VREG_S2_1P225
VREG_S3_1P325
C0809
22uF
C0810
22uF
VREG_S4_2P05
C0811
22uF
C0812
22uF
VREG_S5_S6_APC_1P225
VFB_S5_S6_P
Remote sense from MSM side
VFB_S5_S6_N
Remote sense from MSM side
Power for MSM Modem
Remote sense from MSM side
Power for MSM Core&GRA
Note:
Buck input and Output cap ground of each switch regulator should be
directly connected to their respective GND pins, then connect to main ground with dedicated vias
Power for Low-voltage LDOs
GND_S3
Power for High-voltage LDOs
GND_S4
Power for MSM APC
D
C
B
A
PM8937 Buck converter
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
A
Rev
ofSheetDate:
5 4 3 2 1
D
U0701-E
VREG2
VREG_S3_1P325
VREG_S4_2P05
VPH_PWR
C
Note
Star routing to each VIN group
VPH_PWR
VREG_S4_2P05
R0903
NF
R0904
0
VREG_L1, L19
VREG_L2, L23
VREG_L3
VREG_L4, L5, L6, L7, L16
VREG_L8, L11, L12, L17, L22
VREG_L9, L10, L13, L14, L15, L18
VREG_L20, L21
111
125
139
117
34
35
19
33
46
17
28
31
16
VIN_GR1_1
VIN_GR1_2
VIN_GR2_S3VFB
VIN_GR3
VIN_GR4_S4VFB_1
VIN_GR4_S4VFB_2
VIN_GR5_1
VIN_GR5_2
VIN_GR5_3
VIN_GR6_1
VIN_GR6_2
VIN_GR6_3
VIN_GR7
PM8937
VREG_L1
VREG_L2
VREG_L3
VREG_L4
VREG_L5
VREG_L6
VREG_L7
VREG_L8
VREG_L9
VREG_L10
VREG_L11
VREG_L12
VREG_L13
VREG_L14
VREG_L15
VREG_L16
VREG_L17
VREG_L18
VREG_L19
VREG_L20
VREG_L21
VREG_L22
VREG_L23
VREG_L1_1P0
124
140
118
20
21
61
48
47
30
32
18
60
29
27
41
8
45
12
126
4
5
7
112
C0920
1.0uF
C0921
1.0uF
C0901
4.7uF
C0902
4.7uF
C0903
4.7uF
C0905
0.1uF
HT24
HT25
R0905
0
C0907
1.0uF
C0913
1.0uF
C0916
1.0uF
C0919
4.7uF
C0922
4.7uF_NF
C0923
4.7uF
C0924
4.7uF_NF
C0925
4.7uF
C0928
1.0uF
C0929
1.0uF
C0930
C0926
1.0uF_NF
C0927
4.7uF
1.0uF
RFICs
VREG_L2_1P2
LPDDR&MIPI
VREG_L3_1P225
VDDMX
VREG_L4_1P8
RFICs and GPS eLNA
VREG_L5_1P8
L5 default On
VREG_L6_1P8
L6 default Off
VREG_L7_1P8
Analog
VREG_L8_2P9
eMMC
VREG_L9_3P3
WCN
VREG_L10_2P8
Sensor
VREG_L11_2P95
Micro SD
VREG_L12_PX2_2P95
MSM pad group 2 and SDC2
VREG_L13_3P075
USB and audio
VREG_L14_UIM1
VREG_L15_UIM2
VREG_L16_1P8
PMIC HKADC
VREG_L17_2P85
Camera VCM
VREG_L18_2P7
RF SW
VREG_L19_1P3
WLAN
VREG_L20_1P8_XO
VREG_L21_1P8_RF
CAM_2P8_AVDD
Camera Analog
CAM_1P2_DVDD
Camera Core
C0931
1.0uF
C0932
1.0uF
D
C
PSEUDO CAPLESS LDOs
B
L4*, L6, L8*, L9*, L10, L11*, L12, L14, L15, L17*, L18, L22, L23
B
L4*, L8*, L9*, L11*, L17*, still need validation as Pseudo-capless
L5, L7, L13, L16 have internal PMIC Loads and require local CAPs.
A
PM8937 LDO circuits
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
A
Rev
ofSheetDate:
5 4 3 2 1
D
U0701-A
CDC
PM8937
MIC_IN1_P
MIC_IN1_M
C1040
100PF_NF
C1006
100PF_NF
MIC_IN2_P
MIC_IN3_P
MIC_BIAS1
C
B
MIC_BIAS2
C1011
0.1uF
C1012
0.1uF
Place near PM8937
PM_EAR_P
PM_EAR_M
C1038
100PF_NF
C1039
100PF_NF
CDC_PDM_CLK
CDC_PDM_SYNC
CDC_PDM_TX
CDC_PDM_RX0
CDC_PDM_RX1
CDC_PDM_RX2
C1018
2.2uF
10V?
C1016
2.2uF
LB1001
120ohm
GND_CP
C1019
1.0uF
CDC_PA_VNEG
CP_C1_P
CP_C1_N
106
107
121
56
69
108
95
82
96
92
93
174
175
149
150
173
159
147
133
134
68
SPKR_DRV_P
SPKR_DRV_M_1
SPKR_DVR_M_2
MIC1_IN_P
MIC1_IN_M
MIC2_IN_P
MIC3_IN_P
MIC_BIAS1
MIC_BIAS2
EAR_P
EAR_M
PDM_CLK
PDM_SYNC
PDM_TX
PDM_RX0
PDM_RX1
PDM_RX2
NCP_FLY_P
NCP_FLY_N
NCP_VNEG
PA_VNEG
VDD_PA
VDD_CP
VDD_SPKDRV
VREG_BOOST_5V
BOOST_SW
BOOST_SNS
HPH_REF
HPH_R
HS_DET
GND_CP
GND_CFILT
GND_SPKDRV
GND_BOOST_1
GND_BOOST_2
163
VDDIO
67
148
94
162
161
135
53
54
HPH_L
55
80
146
70
120
160
172
GND_CP
C1004
2.2uF
10V?
GND_SPK
C1024
2.2uF
Recommendation:Isat>2.2A, DCR<120mohm
1. Boost_SNS pin needs routing to VREG_BOOST
bypass cap (C1022/C1023) . Directly on bypass cap.
2. Boost_sns trace should be well isolated
from noisy traces especially from VSW_BOOST
R1001
20K
HT26
HT27
1) Please connect GND_CP (pin 146) to C1004 GND.
Then connect to main PCB GND from C1004
2) Please connect GND_SPKR_PA (pin 120) to C1024 GND.
Then connect to Main PCB GND from C1024.
3) Please connect GND_BOOST (pins 151/152) to
C1022/C1023 GND.
Then connect to Main PCB GND from C1022/C1023.
VREG_L5_1P8
VREG_S4_2P05
C1005
0.1uF
C1020
1.0uF
VREG_S4_2P05
VPH_PWR
Place C1024 near pin89
Place C1022 and C1023 near pin154
CDC_HS_DET
GND_CP
GND_SPK
GND_BOOST
HT28
0
R1010
CDC_HPH_REF
0
R1020
CDC_HPH_L
R1021
0
CDC_HPH_R
R1022
470PF
C1009
C1013
C1014
680PF
680PF
NF
HT30
R1005
PM_GND_MIC
0
C1017
R1006
0R/NF
HT29
33PF_NF
D
C
B
A
PM8937 Codec
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
A
Rev
ofSheetDate:
5 4 3 2 1
D
C
B
Note: WCSS_XO signal required only for 5GHZ.
When using WCN3615 connect pin BD13 to GND.
BBCLK1
MSM_BBCLK1_EN
SLEEP_CLK
TP-0.5MM
TP1151
PM_PON_RESET_N
MSM_RESOUT_N
1
MSM_PS_HOLD
JTAG_RESOUT_N
JTAG_TCK
JTAG_TDI
JTAG_TDO
JTAG_TMS
JTAG_TRST_N
VREF_LPDDR3
C1104
0.01uF
C1103
BD13
AA40
W40
AR40
AH37
BA4
T37
U38
Y39
AB3
AB1
AC2
AA2
G14
0.1uF
AF39
R40
T39
U1101-A
WCSS_XO
CXO
CXO_EN
SLEEP_CLK
RESIN_N
RESOUT_N
MODE_0
MODE_1
PS_HOLD
Y3
SRST_N
TCK
TDI
Y1
TDO
TMS
TRST_N
VREF_EBI0_CH0_CA
VSSX_0_1
R2
PLL_TEST_SE
ATEST0
ATEST1
CONTROL
If eMMC 4.51 or earlier is used,
configure the unused MSM SDC1_RCLK pin to internal pull-down to prevent the bus from floating.
L38
SDC1_RCLK
SDC1_CLK_1
G38
SDC1_CLK
H39
SDC1_CMD
G40
SDC1_DATA_0
H37
SDC1_DATA_1
E38
SDC1_DATA_2
J40
SDC1_DATA_3
F37
SDC1_DATA_4
F39
SDC1_DATA_5
J38
SDC1_DATA_6
K37
SDC1_DATA_7
SDC2_DATA_0
SDC2_DATA_1
SDC2_DATA_2
SDC2_DATA_3
USB2_HS_DM
USB2_HS_DP
USB2_HS_TXRTUNE
USB2_HS_VBUS
PMIC_SPMI_CLK
PMIC_SPMI_DATA
MIPI_DSI0_DCDC
IND-MUTIL-LAYER-2.2UH,+/-20%-750MA 0603
SDC2_CLK
SDC2_CMD
USB2_HS_ID
L1101 (MPL1608S2R2MHT):
SDC2_CLK_1
W4
U4
W2
V1
V3
U2
AE40
AD39
AB39
AC38
AC40
AH39
AG40
AF9
R1103
200
+/-1%
0
R1101
0
R1102
NF
C1101
SDC1_RCLK
SDC1_CLK
SDC1_CMD
SDC1_DATA_0
SDC1_DATA_1
SDC1_DATA_2
SDC1_DATA_3
SDC1_DATA_4
SDC1_DATA_5
SDC1_DATA_6
SDC1_DATA_7
SDC2_SDCARD_CLK
SDC2_SDCARD_CMD
SDC2_SDCARD_D0
SDC2_SDCARD_D1
SDC2_SDCARD_D2
SDC2_SDCARD_D3
USB_HS_D_M
USB_HS_D_P
R1104
Note: Place R1103 close to MSM pin
NF
C1102
USB_ID
NF
SPMI_CLK
SPMI_DATA
Note: Place C1101 C1102 close to MSM
Ensure continuous GND return path with 50 Ω Z0.
Note
MIPI_DSI can be configured as DCDC or LDO mode.
When configured as LDO mode, pin AF9 should be left floating and L1101 should be DNI.
DC-DC mode – For better power ~3 mA lower
Note: Place R1101 on CLK lines close to MSM
Note: Place R1102 on CLK lines close to MSM
Note: 90ohm Diff Imp routing for USB
D
C
B
A
A
MSM8937 Control
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
ofSheetDate:
Rev
5 4 3 2 1
D
U1101-B
EBI0_CS0_N
EBI0_CS1_N
EBI0_CLK_C
C
B
EBI0_CLK_T
EBI0_CKE0
EBI0_CKE1
EBI0_DM0
EBI0_DM1
EBI0_DM2
EBI0_DM3 EBI0_DQ8
EBI0_DQS0_C
EBI0_DQS0_T
EBI0_DQS1_C
EBI0_DQS1_T
EBI0_DQS2_C
EBI0_DQS2_T
EBI0_DQS3_C
EBI0_DQS3_T
EBI0_CA0
EBI0_CA1
EBI0_CA2
EBI0_CA3
EBI0_CA4
EBI0_CA5
EBI0_CA6
EBI0_CA7
EBI0_CA8
EBI0_CA9
C4
EBI0_CS_N_0
D3
EBI0_CS_N_1
G10
EBI0_CKB
E10
EBI0_CK
C2
EBI0_CKE_0
D1
EBI0_CKE_1
C22
EBI0_DM_0
C26
EBI0_DM_1
D15
EBI0_DM_2
C34
EBI0_DM_3
F21
EBI0_DQSB_0
E20
EBI0_DQS_0
D25
EBI0_DQSB_1
F25
EBI0_DQS_1
E16
EBI0_DQSB_2
F17
EBI0_DQS_2
E32
EBI0_DQSB_3
G32
EBI0_DQS_3
A4
EBI0_CA_0
B5
EBI0_CA_1
B3
EBI0_CA_2
E6
EBI0_CA_3
D5
EBI0_CA_4
E4
EBI0_CA_5
F3
EBI0_CA_6
F1
EBI0_CA_7
E2
EBI0_CA_8
G4
EBI0_CA_9
EBI0
EBI0_CAL
EBI0_DQ_0
EBI0_DQ_1
EBI0_DQ_2
EBI0_DQ_3
EBI0_DQ_4
EBI0_DQ_5
EBI0_DQ_6
EBI0_DQ_7
EBI0_DQ_8
EBI0_DQ_9
EBI0_DQ_10
EBI0_DQ_11
EBI0_DQ_12
EBI0_DQ_13
EBI0_DQ_14
EBI0_DQ_15
EBI0_DQ_16
EBI0_DQ_17
EBI0_DQ_18
EBI0_DQ_19
EBI0_DQ_20
EBI0_DQ_21
EBI0_DQ_22
EBI0_DQ_23
EBI0_DQ_24
EBI0_DQ_25
EBI0_DQ_26
EBI0_DQ_27
EBI0_DQ_28
EBI0_DQ_29
EBI0_DQ_30
EBI0_DQ_31
G18
A16
C16
A18
C18
A20
D19
A22
A24
A26
A28
C28
A30
C30
D31
A32
A34
A8
A6
C8
A10
A12
C10
A14
C12
C36
A36
D39
C38
A38
E40
C40
B39
EBI_CAL_REXT
EBI0_DQ0
EBI0_DQ1
EBI0_DQ2
EBI0_DQ3
EBI0_DQ4
EBI0_DQ5
EBI0_DQ6
EBI0_DQ7
EBI0_DQ9
EBI0_DQ10
EBI0_DQ11
EBI0_DQ12
EBI0_DQ13
EBI0_DQ14
EBI0_DQ15
EBI0_DQ16
EBI0_DQ17
EBI0_DQ18
EBI0_DQ19
EBI0_DQ20
EBI0_DQ21
EBI0_DQ22
EBI0_DQ23
EBI0_DQ24
EBI0_DQ25
EBI0_DQ26
EBI0_DQ27
EBI0_DQ28
EBI0_DQ29
EBI0_DQ30
EBI0_DQ31
Note
Place R1201 close to MSM Pin
R1201
240
+/-1%
D
C
B
A
MSM8937 EBI
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
12345
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
A
Rev
ofSheetDate:
1
Note: Asterisks (*) indicate modem power management (MPM) wake-up pins
U1101-C
U6
GPIO_0
P7
GPIO_1
T5
CAM_MCLK0_
CAM_MCLK2_
GPIO_2
P5
GPIO_3
P1
GPIO_4
R4
GPIO_5
P3
GPIO_6
T1
GPIO_7
BF9
GPIO_8
BE8
GPIO_9
BG8
GPIO_10
BF7
GPIO_11
BG14
GPIO_12
BF15
GPIO_13
BD15
GPIO_14
BE14
GPIO_15
BD7
GPIO_16
BG6
GPIO_17
BE6
GPIO_18
BF5
GPIO_19
AU40
GPIO_20
BA40
GPIO_21
AT39
GPIO_22
AP39
GPIO_23
BF11
GPIO_24
BG10
GPIO_25
N2
GPIO_26
N4
GPIO_27
M5
GPIO_28
M3
GPIO_29
M1
GPIO_30
K1
GPIO_31
L2
GPIO_32
L4
GPIO_33
H1
GPIO_34
K3
GPIO_35
J2
GPIO_36
WDOG_DISABLE
UART_MSM_TX
UART_MSM_RX
LED_I2C_SDA
LED_I2C_SCL
FP_RST_N
IRQ_FINGER
TP_I2C_SDA
TP_I2C_SCL
SENSOR_I2C_SDA
SENSOR_I2C_SCL
FP_SPI_MOSI
FP_SPI_MISO
FP_SPI_CS
FP_SPI_CLK
LCD_TE0
CAM_MCLK0
CAM_MCLK2
CAM_I2C_SDA0
CAM_I2C_SCL0
CAM_I2C_SDA1
CAM_I2C_SCL1
FLASH_STROBE_NOW
A
MCAM1_RSTN
( Boot_config [0], WDOG_DISABLE )
R1309
0
R1318
0
C1303
C1301
56PF_NF
56PF_NF
GPIO1
*
*
*
*
*
*
*
*
*
*
*
*
* *
P39
GPIO_37
*
H7
GPIO_38
*
J4
GPIO_39
H3
GPIO_40
M37
GPIO_41
*
K39
GPIO_42
*
M39
GPIO_43
*
N38
GPIO_44
*
P37
GPIO_45
*
R36
GPIO_46
*
AM39
GPIO_47
L40
GPIO_48
*
AB35
GPIO_49
H5
GPIO_50
*
AE38
GPIO_51
AD37
GPIO_52
P5
AF37
GPIO_53
AG38
GPIO_54
*
AL40
GPIO_55
AJ40
GPIO_56
P6
AK39
GPIO_57
AJ38
GPIO_58
*
U40
GPIO_59
*
V39
GPIO_60
V37
GPIO_61
*
W38
GPIO_62
*
N40
GPIO_63
*
R38
GPIO_64
BE12
GPIO_65
*
BD11
GPIO_66
BF13
GPIO_67
*
BG12
GPIO_68
BG18
GPIO_69
BF19
GPIO_70
*
BG16
GPIO_71
*
BF17
GPIO_72
*
BE18
GPIO_73
FORCE_USB_BOOT
SCAM_PWDN
SCAM_RST_N
SCAM_ID
ACCL_INT1_N
ALSP_INT_N
MAG_RST_N
INFARED_DRV
UIM_BATT_ALM
UIM1_DATA
UIM1_CLK
UIM1_RESET
SDCARD_DET_N
UIM2_DATA
UIM2_CLK
UIM2_RESET
SDCARD_DET_N
UIM2_PRESENT
LCD_RST_N
LCD_ID
( Boot_config [5], APPS_BOOT_FROM_ROM )
CAM_VDD_EN
TP_RST_N
TP_INT_N
GP_PDM_A0
SDCARD_DET_N
CDC_PDM_CLK
CDC_PDM_SYNC
CDC_PDM_TX
CDC_PDM_RX0
CDC_PDM_RX1
FP_LDOEN_2V8
UIM1_PRESENT
VREG_L5_1P8
Note
Internal develope use
10K_NF
R1319
CDC_PDM_RX2
BT_SSBI
WL_CMD_DATA_2
WL_CMD_DATA_1
WL_CMD_DATA_0
WL_CMD_SET
WL_CMD_CLK
FM_SSBI
FM_DATA
BT_CTL
BT_DATA
KEY_VOL_UP_N
RFFE1_CLK
RFFE1_DATA
GRFC1_SEL
GRFC2_SEL
GRFC3_SEL
GRFC4_SEL
GRFC5_SEL
U1101-D
BE20
GPIO_74
BD5
GPIO_75
BC4
GPIO_76
BE4
GPIO_77
BD3
GPIO_78
BG4
GPIO_79
BE2
GPIO_80
BF3
GPIO_81
BD1
GPIO_82
BB3
GPIO_83
BC2
GPIO_84
BC22
GPIO_85
BC18
GPIO_86
BB19
GPIO_87
BC20
GPIO_88
BB17
GPIO_89
BC16
GPIO_90
AD1
GPIO_91
Y5
GPIO_92
BE16
GPIO_93
BD17
GPIO_94
BD19
GPIO_95
BD21
GPIO_96
BG20
GPIO_97
BE22
GPIO_98
BF21
GPIO_99
BC40
GPIO_100
BD39
GPIO_101
AW40
GPIO_102
AV39
GPIO_103
AR38
GPIO_104
BB39
GPIO_105
AU38
GPIO_106
BE40
GPIO_107
BF39
GPIO_108
AT37
GPIO_109
GPIO2
*
*
*
*
*
*
*
GPIO_110
GPIO_111
GPIO_112
GPIO_113
GPIO_114
GPIO_115
GPIO_116
GPIO_117
GPIO_118
GPIO_119
GPIO_120
GPIO_121
GPIO_122
GPIO_123
GPIO_124
*
GPIO_125
GPIO_126
*
GPIO_127
*
GPIO_128
*
GPIO_129
GPIO_130
*
GPIO_131
GPIO_132
GPIO_133
GRFC6_SEL
BC38
GRFC7_SEL
BE38
GRFC8_SEL
AV37
GRFC9_SEL
AW38
GRFC10_SEL
AY37
GRFC11_SEL
BA38
GRFC12_SEL
BG38
BC36
EXT_GPS_LNA_EN
BB37
CH0_GSM_TX_PHASE_D0
AW36
BD37
BE36
BF37
BG36
AP37
BC10
BC12
AY39
BE10
BC8
BD9
M35
P35
N36
RFFE5_CLK
RFFE5_DATA
AUDIO_PA_EN
SW_ANALOG_EN
A
I2C PULL-UP RESISTORS
Note: Ensure SW sets these GPIOs (Sensor, CTP and
Camera I2C bus) to inout pull down when the peripherals
are powered off to eliminate leakage.
VREG_L6_1P8 VREG_L6_1P8
SENSORS
SENSOR_I2C_SDA
SENSOR_I2C_SCL
VREG_L5_1P8
TOUCHSCREEN
TP_I2C_SDA
TP_I2C_SCL
2.2K
2.2K
R1304
R1303
2.2K
2.2K
R1308
R1307
CAMERAS
CAM_I2C_SCL0
LED
LED_I2C_SDA
LED_I2C_SCL
CAM_I2C_SDA0
VREG_L5_1P8
Note: Do not have pull-ups on the following GPIOs unless intend for boot
or secure- boot related configurations:
GPIO_91, 107, 109
GPIO
GPIO_3
GPIO_111
GPIO_112
GPIO_88
2.2K
2.2K
R1306
Depth CAMERAS
2.2K
R1305
R1310
2.2K
R1311
BOOT_CONFIG
BOOT_CONFIG[0]/WDOG_DISABLE
BOOT_CONFIG[1]
BOOT_CONFIG[2]
BOOT_CONFIG[3]
BOOT_CONFIG[3:1]
0b000
0b010
0b100
Default Boot Config (0b000) is SDC1(eMMC)
BOOT_CONFIG
SDC1 -> SDC2 -> USB2.0
SDC1
SDC2-> SDC1
MSM8937 GPIO
QUALCOMM Technologies,Inc.
Title
Sheet
Name
Size
1
5775 Morehouse Drive
San Diego, CA 92121-1714
U.S.A.
ofSheetDate:
Rev
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