Wi-Fi&Bluetooth Module Series
FC905A_Hardware_Design 17 / 51
3.2. Pin Assignment
4
1
3
9
3
8
4
0
3
7
3
6
3
5
3
4
4
3
4
2
4
4
1
5
1
7
1
8
1
6
1
9
2
0
2
1
2
2
1
3
1
4
1
2
S
D
IO
_
D
A
T
A
3
PCM_SYNC
VIN_LDO
PCM_DIN
SDIO_VSEL
WLAN_SLP_CLK
PCM_DOUT
PCM_CLK
V
IN
_
L
D
O
_
O
U
T
S
D
IO
_
D
A
T
A
1
G
N
D
RESERVED
W
L
A
N
_
E
N
W
L
A
N
_
W
A
K
E
S
D
IO
_
D
A
T
A
2
11
10
9
7
6
8
5
4
3
2
1
23
24
25
27
28
26
29
30
31
32
33
S
D
IO
_
D
A
T
A
0
S
D
IO
_
C
L
K
S
D
IO
_
C
M
D
V
IO
GND
GND
RESERVED
B
T
_
E
N
R
E
S
E
R
V
E
D
G
N
D
G
P
IO
4
G
P
IO
2
G
P
IO
3
B
T
_
C
T
S
G
P
IO
1
B
T
_
T
X
D
B
T
_
R
T
S
B
T
_
R
X
D
GND
GND
ANT_WIFI0/BT
RESERVED
RESERVED
HOST_WAKE_BT
BT_WAKE_HOST
RESERVED
VBAT
XTAL_OUT
XTAL_IN
FC905A
GND
Power
WLAN
Bluetooth
RF
XTAL
Others
RESERVED
GPIO
Figure 1: Pin Assignment (Top View)
Keep all RESERVED pins open.
NOTE