User's Manual

WB50NBT
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wi-fi
13
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#
Pin Name
Section
I/O
Reference
Description
If Unused
53
MC_DA2
I/O
VCC3_3
SDIO Multimedia Card Data 2
Leave open
54
DSR_0
I
VCC3_3
UART0 Interface, Data Set Ready
10K Pull High
55
GND
-
-
Ground
Must be connected to
GND
56
DTR_0
O
VCC3_3
UART0 Interface, Data Terminal Ready
Leave open
57
MC_DA1
I/O
VCC3_3
SDIO Multimedia Card Data 1
Leave open
58
RI_0
I
VCC3_3
UART0 Ring Indicator 1
10K Pull High
59
MC_DA0
I/O
VCC3_3
SDIO Multimedia Card Data 0
Leave open
60
DCD_0
I
VCC3_3
UART0 Data Carrier Detect
10K Pull High
61
GND
-
-
Ground
Must be connected to
GND
62
GND
-
-
Ground
Must be connected to
GND
63
MC_CLK
O
VCC3_3
SDIO Multimedia Card Clock
Leave open
64
S_CLK_0
I/O
VCC3_3
UART0 Serial Clock
Leave open
65
GND
-
-
Ground
Must be connected to
GND
66
TXD_0
O
VCC3_3
UART0 Serial Output
Leave open
67
MC_CDA
I/O
VCC3_3
SDIO Multimedia Card Command
Leave open
68
RXD_0
I
VCC3_3
UART0 Serial Input
Leave open
69
GND
-
-
Ground
Must be connected to
GND
70
GND
-
-
Ground
Must be connected to
GND
71
N/C
-
-
No Connection
Leave open
72
B_INT
(IRQ)
I
VCC3_3
External Bus Interface
Interrupt Request
100K Pull High
73
N/C
-
-
No Connection
Leave open
74
WKUP
I
VDD_BU
Interrupt Signal to wake up module;
active low
100K Pull High
75
N/C
-
-
No Connection
Leave open
76
GND
-
-
Ground
Must be connected to
GND
77
GND
-
-
Ground
Must be connected to
GND
78
XPABIAS50
O
VCC3_3
External 5GHz booster control signal to
turn on the PA for Chain 0.
Leave open
79
N/C
-
-
No Connection
Leave open
80
XPABIAS51
O
VCC3_3
External 5GHz booster control signal to
turn on the PA for Chain 1
Leave open