Service Guide

Wi-Fi&Bluetooth Module Series
FC908A_Hardware_Design 17 / 49
3.2. Pin Assignment
SDIO_DATA3
PCM_SYNC
VIN_LDO
PCM_DIN
RESERVED
WLAN_SLP_CLK
PCM_DOUT
PCM_CLK
VIN_LDO_OUT
SDIO_DATA1
GND
RESERVED
WLAN_EN
WLAN_WAKE
SDIO_DATA2
15 17 18
16
19
20 21
22 13 14 12
11
10
9
7
6
8
5
4
3
2
1
23
24
25
27
28
26
29
30
31
32
33
SDIO_DATA0
SDIO_CLK
SDIO_CMD
VIO
GND
GND
RESERVED
41 39 38
40
37
36 35
34 43 42 44
BT_EN
RESERVED
GND RESERVED
GPIO2
RESERVED
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
FC908A
GND Power WLAN
Bluetooth
RF XTAL
Other signals RESERVED GPIO
Figure 1: Pin Assignment (Top View)
1. Keep all RESERVED pins open.
2. All GND pins shall connect to the ground.
NOTE