Data Sheet

K255B-SR
FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential Information
9
5
GND
－
Ground connections
6
GND
－
Ground connections
7
GND
－
Ground connections
8
GND
－
Ground connections
9
ANT1/NC
－
Dual band Wi-Fi RF I/O for FGK255BSRX-00;
NC for FGK255BSRX-XM
10
GND
－
Ground connections
11
GND
－
Ground connections
12
ANT2/NC
I/O
Dual band Wi-Fi RF I/O for FGK255BSRX-XM;
NC for FGK255BSRX-00
13
GND
－
Ground connections
14
NC
－
No connect
15
CHIP_EN
I
CHIP_EN
This pin can externally shut down WLAN function when pulled
low, default high
1.8V
16
WL_WAKE_HOST
O
WLAN wake-up HOST
1.8V
17
SDIO_CMD
I/O
SDIO command line
1.8V
18
SDIO_ CLK
I/O
SDIO clock line
1.8V
19
SDIO_DATA_3
I/O
SDIO data line 3
1.8V
20
SDIO_DATA_2
I/O
SDIO data line 2
1.8V
21
SDIO_DATA_0
I/O
SDIO data line 0
1.8V
22
SDIO_DATA_1
I/O
SDIO data line 1
1.8V
23
GND
－
Ground connections
24
NC
－
No connect
25
NC
－
No connect
26
NC
－
No connect
27
PCM_SYNC
I/O
PCM sync signal
1.8V
28
PCM_IN
I
PCM data input
1.8V
29
PCM_OUT
O
PCM Data output
1.8V
30
PCM_CLK
I/O
PCM clock
1.8V
31
RTC_CLK
I
External Low Power Clock input (32.768KHz)
If not used keep NC
32
GND
－
Ground connections
33
NC
－
No connect
34
VDDIO
P
I/O Voltage supply input
1.8V
35
NC
－
No connect