BRM01 Datasheet, PDF (7/14 Pages) rfsolutions.ltd – 2.4GHZ BLUETOOTH TRANSCEIVER MODULE

2.4GHZ BLUETOOTH TRANSCEIVER MODULE
BRM01
Pin Descriptions
PIN NAME
GND
+5V
/RES
/TXD
/RTS
/RXD
/CTS
/CAR
/DATA
/POS
/CLM
J_1
J_2
J_3
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
TEST1
TEST2
TEST3
TEST4
PIN
PSYNC
POUT
PCLK
DIRECTION
IN
OUT
OUT
IN
IN
OUT
OUT
OUT
IN
IN
IN
IN
I/O*
I/O*
I/O*
I/O*
I/O*
I/O*
N/C
N/C
N/C
N/C
IN
IN
OUT
OUT
PIN NUMBER
1, 13, 30
14
11
17
15
18
16
18
21
20
12
10
9
8
7
6
5
4
3
2
29
28
27
26
25
24
23
22
DESCRIPTION
System Ground 0V
Power Supply to unit. Range is from 4V to 5.5V
Reset. This is an active low intput which allows the host to
reset the BRM to power-on-reset condition.
Transmit Data output providing transmit data from the BRM
Request to Send. When this output goes false (high), the
host must stop sending data to the BRM at the end of the
current byte.
Receive Data. Receive data input from the host
Clear to Send. If this input goes false (high), the BRM will
stop transmitting at the end of the current byte.
Connected/Carrier. This is an active low output which
indicates when a connection is present. This output is
capable of sinking up to 20mA and is therefore suitable for
directly driving an LED via suitable series resistor.
Data. This active low output indicates data activity present
and can be used to directly drive an LED via a suitable
series resistor.
Power-On-Self test out. This active low output indicates
successful completion of the power-on-self test sequence.
Command Line Mode. This active low input has multiple
funtions depending upon J1,J2,J3 settings. This input is
wire Ored with switch SW1.
J1 not fitted - /CLM functions as the Learn function.
J1 fitted - /CLM activates the Command Line Menu.
Mode selection input 1
Mode selection input 2
Mode selection input 3
Auxillary I/O lines. These lines allow the designer to
implement a simple control/aquisition system with the
minimum of external circuitry. Each line can be
programmed to perform the following functions:
Digital Input
Digital Output (GPIO4 open drain)
Analogue Input (not GPIO4)
These pins are reserved for testing and should not be
connected.
Interface to external CODEC for voice applications. Note
these are at 0 - 3.3V levels.
* Note: These have 47kΩ pull-up resistors to VCC
DS360-5 March 04
©2004 Reg. No. 227 4001, England
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