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H
E
4
4
F
B
A
D
1
12
9
8
5
3
11
6
10
C
A
E
F
7
6
2
7
12
5
8
3
C
G
B
G
D
0
1
9
H
11
2
1
R206
L202
VCOMBO_3.3V
C207
R207
C214
R205
C223
C234
C206
C211
C238
C222
2
4
3
1
VCOMBO_1.8V
C220
OSC200
C215
VCOMBO_3.0V
C228
VCOMBO_1.8V
C205
C202
VAP_SYS_3.0V
VCOMBO_1.8V
V_BAT
C219
OSC201
2
4
3
1
VAP_SYS_3.0V
C218
SDIO
14
VA
VD 10
8
VIO
_RST
4
5
_SEN
C209
NC
16
NC
NC
18
19
NC
9
RCLK
3 RFGND
ROUT 12
SCLK
6
7
U201
FMI
2
GND 11
17
GND
15
GPO
13
LOUT
1
R209
1
1
2
2
ANT202
C213
C232
C210
C226
C203
EN1
3
1
EN2
GND
7
2
VIN
5
VOUT1
6
VOUT2
4
VSS
U202
R201
C237
L200
C225
R204
VCOMBO_3.3V
C201
VCOMBO_3.3V
C221
7
PIO2
PIO3
8
PIO0
9
C208
NC
NC
49
VDD1.8D_W
5
NC
50
NC
51
52
NC
53
NC
54
NC
GPIO0
6
SD_CMD|SPI_SDI
SD_CLK|SPI_CLK
41
VDDIO_W
42
VDD3.3_FEM
43
VDD3.3_W
44
SLEEP_CLK_W
45
GPIO1
46
RESET_W
47
48
TDO
34
35
GND
SD_D3
36
SD_D2|SPI_SINTN
37
SD_D1|SPI_SDO
38
SD_D0|SPI_SCSN
39
VDD1.8A_W
4
40
VDD3.3_B
27
XTAL_OUT_B
28
XTAL_IN_B
29
IF_SEL2
3
XTAL_IN_W
30
XTAL_OUT_W
31
GPIO5
32
GPIO6
33
IF_SEL1
2
PCM_CLK
20
UART_TX
21
UART_CTS
22
UART_RX
23
UART_RTS
24
GND
25
VDDIO_B
26
RF_INOUT
12
IF_SEL3
13
PIO4
14
PIO1
15
RESET_BT
16
PCM_OUT
17
PCM_SYNC
18
PCM_IN
19
MOD200
GND
1
NC
10
GND
11
R208
VREG_RFRX2_2.7V
C235
C231
VCOMBO_3.0V
C212
GND
3
GND
7
8
GND
RFIN
1
RFOUT 5
6
VDD
4
VSD
U200
2
GND
ANT201
1
2
3
4
V_BAT
R202
L201
GND
5
GND
2
4
VDD
1 VOUT
U203
3
CE
COMBO_EN
RX_GPS
XTAL_IN_B
XTAL_OUT_B
COMBO_EN
WLAN_SPI_TXD
GLNA_ON
BT_nRST
AP_BT_RTS
AP_BT_CTS
XTAL_OUT_B
XTAL_IN_B
XTAL_IN_W
XTAL_OUT_W
WLAN_HOST_WAKE
WLAN_SPI_RXD
AP_BT_TXD
AP_BT_RXD
BT_PCM_CLK
BT_PCM_SYNC
WLAN_SPI_CLK
WLAN_SPI_nCS
WLAN_nRST
BT_PCM_DO
BT_PCM_DI
FM_ANT
FM_nRST
FM_INT
RADIO_L
FM_CLK32K
RADIO_R
FM_SCL
FM_SDA
XTAL_IN_W
XTAL_OUT_W
GT-B7300 Service schematic diagram
GPS
FM RADIO
BT/WL