Laird BTM420, User Manual

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BTM420/421
Bluetooth
®
Data Module
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
7 Laird
Americas: +1-800-492-2320
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Pin Definitions
Table 3: Pin Definitions
Pin Signal Description Voltage Specification
1 Unused
2 GND
3 Unused
4 Unused
5 Unused
6 Unused
7 GND
8 SPI_CSB SPI bus chip select I/P VIO
9 SPI_MISO SPI bus serial O/P VIO
10 SPI_MOSI SPI bus serial I/P VIO
11 SPI_CLK SPI bus clock I/P VIO
12 VDD_USB USB & UART supply voltage
15 GND
16 PCM_IN PCM clock I/P VIO
17 PCM_SYNC PCM sync I/P VIO
18 PCM_CLK PCM click I/P VIO
19 PCM_OUT PCM Data O/P VIO
20 RESET Module reset I/P See note 2
21 Unused
22 GPIO2 / UART_DCD I/O for host VIO
23 GND
24 Unused
25 Unused See note 3
26 Unused See note 3
27 Unused See note 3
28 GND See note 3
29 ANT (BTM420) Antenna connection (50 ohm matched) See note 3
30 GND See note 3
31 Unused See note 3
32 Unused See note 3
33 Unused See note 3
34 Unused See note 3
35 Unused See note 3
36 Unused See note 3
37 Unused See note 3
38 Unused
39 Unused
40 Unused