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BRM01 데이터시트 PDF




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부품번호 BRM01 기능
기능 2.4GHZ BLUETOOTH TRANSCEIVER MODULE
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BRM01 데이터시트, 핀배열, 회로
2.4GHZ BLUETOOTH TRANSCEIVER MODULE
BRM01
Features
Plug And Play
Small Size (45mm x 28mm x 3mm)
Simple 4 Wire Serial Interface
100mW Transceiver
Onboard 10-bit ADCs/GPIO ports
Automatic RF Power Control
Frequency Hopping
Authentication and Encryption
Single and Multiple End Points
1Mb/s Symbol Rate
Built In or Approved External Antenna
Full Duplex Voice (with external codec)
Supply Voltage 4V to 5.5V
Low Power
Applications
Cable Replacement
Telemetry
Process Control
Robotics
Internet Access
File Transfer
Remote Terminal
Remote Control
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HApOpSlTicatuioPn
BRM
MDEOVDIUCELEA
(MASTER)
SUPPLY
BRM
MDEOVDIUCELEB
(SLAVE)
Sensor
DispHlaOyST uP
Switch
Keypad
SUPPLY
Overview
The Basic Radio Modem (BRM) radio telemetry module is a self-contained PCB-mountable radio module which
requires only a 4V to +5.5V supply and serial data source. The built-in radio protocol provides all the low-level radio
link management and error correction functions. These are completely transparent to the user. A maximum practical
data rate of 115.2kb/s is possible in either direction. Achievable range is typically 200m line-of-sight and there is no
licensing requirement for usage of devices on these frequencies. RF Solutions Ltd can provide versions of firmware
to support customer specific applications using the onboard ADCs and GPIOs.
An evaluation system is also available consisting of a motherboard which can be powered from either batteries or
mains adapter. A 9-way D-type connector allows direct interfacing to a PC COM port for testing and evaluation.
Access to all BRM ports is provided via pin headers. Please see datasheet DS362 for more information on this
product.
Ordering Information
Part Number
BRM01
www.DataSheet4U.com
Description
BRM transceiver 2.4GHZ
Version Information
This datasheet refers to BRM01 modems with firmware versions 0.29 or later. The firmware version is labelled on
the modem.
DS360-5 March 04
©2004 Reg. No. 227 4001, England
Page 1




BRM01 pdf, 반도체, 판매, 대치품
2.4GHZ BLUETOOTH TRANSCEIVER MODULE
BRM01
RS232 Driver
The standard BRM01 device is supplied with a built-in RS232 interface driver. This option allows the BRM to
be connected directly to a PC COM port or similar device. The theoretical maximum baud rate of the module
is 460Kb/s, this is limited by the driver to 230.4kb/s. This is generally not an issue when used in conjunction
with personal computers, since they normally support a maximum baud rate of only 115.2kb/s. Custom
versions of the BRM01 module can be supplied without the RS232 driver, please contact RF Solutions Ltd
for more information.
Antenna
The Standard BRM01 module is supplied fitted with an integrated F type Antenna. Custom versions of the
BRM01 module can be supplied without the internal antenna and with a range of RF connectors for fitting
external antennas, please contact RF Solutions Ltd for more information.
Interfacing To Host
The host may be any suitable device capable of sending and/or receiving serial data using RTS/CTS
handshaking. This might be for example, a handheld microprocessor controlled data terminal or personal
computer.
The minimum requirements are for a 4-wire interface (plus power and ground) from the host device. This
interface is shown below:
TXD – Transmit Data output providing transmit data from the BRM
CTS – Clear to Send. If this input goes false, the BRM will stop
transmitting at the end of the current byte
RXD – Receive Data. Receive data input from the host
RTS – Request to Send. When this output is true, the host may
send data to the BRM
GND – Ground
VCC – 4.0V to 5.5V Power supply
HOST
TXD
CTS
RXD
RTS
GND
VCC
BRM
RXD
RTS
TXD
CTS
GND
VCC
Indicators
For convenience three LEDs provide visual indication of operating status. The equivalent logic outputs are
also available externally. The LED functions are shown in the table below:
LED
RED
GREEN
AMBER
State
Off
Flashing (0.5Hz)
On
Off
On
Off
Flickering
Meaning
no power or error, perform reset to recover
virgin device, learning of remote device required
power-on-self test successful (ready)
no link
link present (connected)
no activity
transmit or receive activity
Learn/CLM Button (SW1)
This momentary switch ensures extremely easy setup for use in basic point to point applications and for
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the first
provide
time,
point
devices
to point
can be rapidly bonded to
connectivity. No external
each other by
hardware or
software is required in order to perform this operation.
This button also provides access to the ‘Command Line Menu’, which allows more complex functions to be
administered using a terminal emulator such as ‘HyperTerminal’ or similar. The equivalent logic input is also
available externally for use by the customer’s application.
DS360-5 March 04
©2004 Reg. No. 227 4001, England
Page 4

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BRM01 전자부품, 판매, 대치품
2.4GHZ BLUETOOTH TRANSCEIVER MODULE
BRM01
Pin Descriptions
PIN NAME
GND
+5V
/RES
/TXD
/RTS
/RXD
/CTS
DIRECTION
IN
OUT
OUT
IN
IN
/CAR
OUT
/DATA
/POS
OUT
OUT
/CLM
IN
J_1
J_2
J_3
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
TEST1
TEST2
TEST3
TEST4
www.DataPShINeet4U.com
PSYNC
POUT
PCLK
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 47kpull-up resistors to VCC
DS360-5 March 04
©2004 Reg. No. 227 4001, England
Page 7

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