User's Manual

M2US50NBT/M2SD50NBT
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
23
Laird
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Pin #
Name
Type
Voltage
Reference
Description
If Not
Used
48
LTE_FRAME_SYNC
I
1.8V
Reserved for LTE coexistence
Note: Not currently supported.
N/C
49
N/C
-
-
N/C
N/C
50
CLK_32K
I
3.3V
32.768KHz slow clock input.
Necessary to put BT into deep sleep mode.
N/C
51
GND
-
-
Ground
GND
52
N/C
-
-
N/C
N/C
53
N/C
-
-
N/C
N/C
54
BT_RFKILL
I
3.3V
Reset BT or to disable BT; Active L
N/C
55
N/C
-
-
N/C
N/C
56
WIFI_RFKILL
I
3.3V
Reserved for RF disable (RF Kill) feature.
Active Low.
Note: Not supported by current software.
N/C
57
GND
-
-
Ground
GND
58
N/C
-
-
N/C
N/C
59
N/C
-
-
N/C
N/C
60
N/C
-
-
N/C
N/C
61
N/C
-
-
N/C
N/C
62
N/C
-
-
N/C
N/C
63
GND
-
-
Ground
GND
64
N/C
-
-
N/C
N/C
65
N/C
-
-
N/C
N/C
66
N/C
-
-
N/C
N/C
67
N/C
-
-
N/C
N/C
78
N/C
-
-
N/C
N/C
69
GND
-
-
Ground
GND
70
N/C
-
-
N/C
N/C
71
N/C
-
-
N/C
N/C
72
3.3Vaux
-
-
3.3V power supply
3.3V
73
N/C
-
-
N/C
N/C
74
3.3Vaux
-
-
3.3V power supply
3.3V
75
GND
-
-
Ground
GND