Data Sheet

6221B-UUC
FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential
Information
8
14 NC
－
Not connected
15 WLAN_EN I
Enable pin for WLAN device
ON: pull high ; OFF: pull low
3.3V
16 WL_WAKE_HOST O WLAN to wake-up HOST 3.3V
17~22 NC
－
Not connected
23 GND
－
Ground connections
24 CHIP_EN I/O
Enable pin for chipset. Pull low to shut
down RTL8821CU.
(Internal 47Kohm pull-high to 3.3V)
3.3V
25 GND
－
Ground connections
26~27 NC
－
Not connected
28 GND
－
Ground connections
29~30 NC
－
Not connected
31 GND
－
Ground connections
32 USB_DP I/O
USB2.0 differential pair D+ for WLAN
and Bluetooth
33 USB_DM I/O
USB2.0 differential pair D- for WLAN
and Bluetooth
34 GND
－
Ground connections
35 NC
－
Not connected
36 VCC33 P Main power input 3.3V 3.3V
37 GND
－
Ground connections
38 BT_EN I
Enable pin for Bluetooth device
ON: pull high ; OFF: pull low
3.3V
39 GND
－
Ground connections
40~45 NC
－
Not connected
46 GND
－
Ground connections
47 NC I Not connected
48 GND
－
Ground connections
49 HOST_WAKE_BT I HOST to wake-up Bluetooth device 3.3V
50 BT_WAKE_HOST O Bluetooth device to wake-up HOST 3.3V
P: POWER I: INPUT O: OUTPUT