Laird MSD45N, Hardware Integration Manual

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Laird MSD45N
Hardware Integration Guide, version 1.1
Embedded Wireless Solutions Support Center:
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www.lairdtech.com/wireless
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P
IN
D
EFINITIONS
Table 5: Pin Definitions
Pin
#
Name I/O
Default
State
Ref. Description If Unused
1 GND
-
Ground
Must be
connected to
GND
2 No Connect - - No internal connection. Leave it open Leave open
3 BT_PRIORITY I Hi-Z VDD_IO
3-Wire Wi-Fi/BT coexistence signal
BT_PRIORITY for Bluetooth coexistence
4 No Connect - - No internal connection. Leave it open Leave open
5 No Connect - - No internal connection. Leave it open Leave open
6 No Connect - - No internal connection. Leave it open Leave open
7 No Connect - - No internal connection. Leave it open Leave open
8 No Connect - - No internal connection. Leave it open Leave open
9 No Connect - - No internal connection. Leave it open Leave open
10 No Connect - - No internal connection. Leave it open Leave open
11 No Connect - - No internal connection. Leave it open Leave open
12 No Connect - - No internal connection. Leave it open Leave open
13 VCC3_3 - 3.3 V Module Power
14 No Connect - - No internal connection. Leave it open Leave open
15 No Connect - - No internal connection. Leave it open Leave open
16 No Connect - - No internal connection. Leave it open Leave open
17 No Connect - - No internal connection. Leave it open Leave open
18 No Connect - - No internal connection. Leave it open Leave open
19 No Connect - - No internal connection. Leave it open Leave open
20 No Connect - - No internal connection. Leave it open Leave open
21 VDD_IO
- I/O bus voltage configuration;
Either 3.3 V or 1.8 V
22 No Connect - - No internal connection. Leave it open Leave open
23 No Connect No internal connection. Leave it open Leave open
24 No Connect - - No internal connection. Leave it open Leave open
25 No Connect No internal connection. Leave it open Leave open
26 No Connect - - No internal connection. Leave it open Leave open
27 SDIO_DATA_2 I/O Pull-H VDD_IO
SDIO Data2
Note: See “
Integration Considerations ” for additional
integration information.
28 WL_ACTIVE O Low VDD_IO
3-Wire Wi-Fi/BT coexistence signal;
WLAN_ACTIVE for Bluetooth
coexistence
29 VCC3_3 - 3.3 V Module Power