Data Sheet

DS-RN41-V3.1 6/27/2011
809 University Avenue • Los Gatos, CA 95032 • Tel [phone] • [e-mail]
Pin Description
1
2
3
4
5
6
7
8
9
10
11
12
GND
SPI MOSI
PIO6
PIO7
RESET
SPI_CLOCK
PCM_CLK
PCM_SYNC
PCM_IN
PCM_OUT
VDD
GND
24
23
22
21
20
19
18
17
16
15
14
13
SPI_MOSI
SPI_CSB
PIO4
PIO5
PIO3
PIO2
USB_D-
USB_D+
UART_CTS
UART_RST
UART_TX
UART_RX
RN-42
AIO1 GND PIO11 PIO10 PIO9 PIO8 GND AIO0
35 29 34 33 32 31 28 30
SPI_MISO
UART_RTS
Pin
Name
Description
Default
1
GND
2
SPI MOSI
Programming only
No Connect
3
PIO6
Set BT master (HIGH=auto-master mode)
Input to RN41with weak pulldown
4
PIO7
Set Baud rate (HIGH = force 9600, LOW = 115K or
firmware setting)
Input to RN41 with weak pulldown
5
RESET
Active LOW reset
Input to RN41 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
3.3V regulated power input
12
GND
13
UART_RX
UART receive Input
Input to RN41
14
UART_TX
UART transmit output
High level output from RN41
15
UART_RTS
UART RTS, goes HIGH to disable host transmitter
Low level output from RN41
16
UART_CTS
UART CTS, if set HIGH, disables transmitter
Low level input to RN41
17
USB_D+
USB port
Pull up 1.5K when active
18
USB_D-
USB port
19
PIO2
Status, HIGH when connected, LOW otherwise
Output from RN41
20
PIO3
Auto discovery = HIGH
Input to RN41 with weak pulldown
21
PIO5
Status, toggles based on state, LOW on connect
Output from RN41
22
PIO4
Set factory defaults
Input to RN41 with weak pulldown
23
SPI_CSB
Programming only
No Connect
24
SPI_MISO
Programming only
No Connect
25
GND
26
NC
RF pad keep all traces and planes clear.
27-29
GND
30
AIO0
Optional analog input
Not Used
31
PIO8
Status (RF data rx/tx)
Output from RN41
32
PIO9
IO
Input to RN41 with weak pulldown
33
PIO10
IO (remote DTR signal)
Input to RN41 with weak pulldown
34
PIO11
IO (remote RTS signal )
Input to RN41 with weak pulldown
35
AIO1
Optional analog input
Not Used
Digital I/O Characteristics