Pin Definitions - Laird BTM420 User Manual

BTM420/421
®
Bluetooth Data Module

Pin Definitions

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