User's Manual

Universal Scientific Industrial Corp.
Doc No. Rev
1.4
Date.
2011/12/09
Page
10
Description
Product Specification – WM-G-MR-09-Ref2
23 IF_SEL_1 O
Select Interface Mode Pin
SDIO Mode: No Connect
G-SPI Mode: Pull Down by 100kohm
24 IF_SEL_2 O
Select Interface Mode Pin
SDIO Mode: No Connect
G-SPI Mode: Pull Down by 100kohm
25 VDD18A POWER
1.8V Analog DC monitor terminal , need 1uF
decoupling capacitor
26 GND GND Ground
27 VDD_33 POWER Connect to 3.3V DC supply
28 VDD_33 POWER Connect to 3.3V DC supply
29 WL_ACTIVE O
WLAN Active (Active Low)
2-Wire BCA Mode
When high, WLAN is transmitting or receiving
packets.
3-Wire BCA Mode
0 = Bluetooth device is allowed to transmit
1 = Bluetooth device is not allowed to transmit
Internal 50kohm pull-down. This pin drives low
when PDn
is asserted. In WLAN Sleep mode, all I/O Pads
are
powered down. This Pad must stay at a low
state even in
power down mode.
Please make it open when do not use it.
30 PDn I
Pull up by 100kohm, Full Power Down (Active
Low)
31 RESETn I Reset (Active Low) , leave open if no use.