User's Manual

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www.rovingnetworks.com Version 3.3r 10/3/2012 4
RN-41-DS
Figure 2 shows the pinout and Table 6 describes the pins.
Figure 2. RN-41/RN-41-N Pinout
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Table 6. Pin Description
Pin Name Description Default
1 GND Ground –
2 SPI_MOSI Programming only No connect
3 GPIO6 Set Bluetooth master (high = auto-master mode) Input to RN-41with weak pulldown
4 GPIO7 Set baud rate (high = force 9,600, low = 115 K
or firmware setting)
Input to RN-41 with weak pulldown
5 RESET Active-low reset Input to RN-41 with 1K pullup
6 SPI_CLK Programming only No Connect
7 PCM_CLK PCM interface No Connect
8 PCM_SYNC PCM interface No Connect
9 PCM_IN PCM interface No Connect
10 PCM_OUT PCM interface No Connect
11 VDD 3.3-V regulated power input –
12 GND Ground –
13 UART_RX UART receive input Input to RN-41
14 UART_TX UART transmit output High level output from RN-41