User's Manual

Wi-Fi&Bluetooth Module Series
FC905A_Hardware_Design 17 / 51
3.2. Pin Assignment
41 39 38
40
37
36 35
34 43 42 44
15 17 18
16
19
20
21
22 13 14 12
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
BT_EN RESERVED
GND
GPIO4
GPIO2
GPIO3 BT_CTS GPIO1
BT_TXD
BT_RTS
BT_RXD
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