Datasheet

PmodBT2™ Reference Manual
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 2 of 3
rate (115.2kbps default) or a baud rate of 9600 regardless of the software selected rate when shorted. For more
detailed information on jumper settings and functionality, refer to the RN-42 user manual.
Jumper
Description
JP1 (PIO4)
Factory Default
JP2 (PIO3)
Auto Discovery/Pairing
JP3 (PIO6)
Auto Connect
JP4 (PIO7)
Baud Rate Setting (9600)
Table 1. Set jumper description.
Roving
Network
RN-42
RTS
RXD
TXD
CTS
GND
VCC
1
2
3
4
5
6
7
8
9
10
11
12
STATUS
VCC
RST
NC
NC
GND
J1
1 2
VCC
JP1
JP2
JP3
3
4
6
5
8
7
JP4
4
5
6
1
2
3
MISO
VCC
MOSI
SCK
CS
GND
J2
Figure 1. PmodBT2 block diagram.
1.2 UART Interface
By default, the UART interface uses a baud rate of 115.2 kbps, 8 data bits, no parity, and a single stop bit. The
startup baud rate may be customized to predefined rates or set to a specific user customized baud rate.
Predefined baud rates range from 1200 to 921k.
The reset pin (RST) on J1 is active low. If the RST pin is toggled, the device will undergo a hard reset. This hard reset
performs similarly to a power cycling of the device. The second interface besides the standard UART signals is the
STATUS pin also on J1The STATUS pin directly reflects the connection status of the device. STATUS is driven high by
the device when connected and is driven low otherwise.
For more information on the devices UART interface and RST and STATUS pins refer to the RN-42 user manual on
the Roving Networks website.
1.3 Command Mode