TDK Module blu2i User Manual
2i
blu
Module
User Guide
The information contained in this document is subject to change without notice. TDK Systems Europe makes no warranty of
any kind with regard to this material including, but not limited to, the implied warranties of merchant ability and fitness for a
particular purpose. TDK Systems Europe shall not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this material.
© Copyright 2004 TDK Systems Europe Limited.
All rights reserved.
This document contains information that is protected by copyright. All rights reserved. No part of this document may be
photocopied, reproduced, or translated to another language without the prior written consent of TDK Systems Europe.
Other product or company names used in this publication are for identification purposes only and may be trademarks of their
respective owners.
1 of 36
Contents
BEFORE YOU BEGIN.................................................................................................................................................................... 3
AFETY GUIDELINES................................................................................................................................................................... 3
S
APPROVALS .......................................................................................................................................................................... 3
RF
1 FUNCTIONS ...................................................................................................................................................................... 4
2 APPLICATION INTERFACE ............................................................................................................................................. 5
2.1 S
2.2 P
2.3 POWER-ON-RESET (POWER CYCLING AND BROWN OUT CONSIDERATIONS)..................................................................... 6
2.4 SPI
2.5 P
2.6 PCM CODEC INTERFACE................................................................................................................................................ 8
3 ELECTRICAL SPECIFICATION OF THE INTERFACE .................................................................................................... 9
3.1 E
4 PHYSICAL CHARACTERISTICS.................................................................................................................................... 13
4.1 M
4.2 M
4.3 BOARD TO BOARD CONNECTOR.................................................................................................................................... 14
5 ELECTRICAL AND RADIO CHARACTERISTICS.......................................................................................................... 16
5.1 A
5.2 OPERATING TEMPERATURES......................................................................................................................................... 16
5.3 P
5.4 L
5.5 RF
5.6 R
6 RS232 MODEM SIGNALS............................................................................................................................................... 24
6.1 M
6.2 BREAK
6.3 R
7 PURE CABLE REPLACEMENT MODE.......................................................................................................................... 27
7.1 D
7.2 A
7.3 MODEM CONTROL AND STATUS SIGNALS ...................................................................................................................... 29
8 GETTING STARTED ....................................................................................................................................................... 30
8.2 F
8.3 S
APPENDIX A ................................................................................................................................................................................ 34
E
FCC
APPENDIX B ................................................................................................................................................................................ 35
ESD
A
WARRANTY ................................................................................................................................................................................. 36
ERIAL INTERFACE......................................................................................................................................................... 5
OWER SUPPLY ............................................................................................................................................................. 6
BUS ........................................................................................................................................................................ 8
ARALLEL PIO PORT ..................................................................................................................................................... 8
LECTRIC CHARACTERISTICS ....................................................................................................................................... 11
ECHANICAL DIMENSIONS............................................................................................................................................ 13
OUNTING THE BLU2I MODULE ONTO THE APPLICATION PLATFORM .................................................................................14
BSOLUTE MAXIMUM RATINGS ...................................................................................................................................... 16
OWER CONSUMPTION ................................................................................................................................................ 16
OW POWER MODES USING SNIFF ................................................................................................................................ 19
PERFORMANCE ....................................................................................................................................................... 21
5.5.1 Transmit Power .............................................................................................................................................21
5.5.2 Receive Sensitivity ........................................................................................................................................ 21
5.5.3 Range ............................................................................................................................................................ 21
5.5.4 Performance against Temperature................................................................................................................ 22
ELIABILITY ................................................................................................................................................................. 23
ODEM SIGNALLING OVER BLUETOOTH ......................................................................................................................... 25
SIGNAL ON RX LINE .........................................................................................................................................25
ESET ......................................................................................................................................................................... 26
ATA CABLE ................................................................................................................................................................ 27
UDIO CABLE............................................................................................................................................................... 28
2i
8.1.1 Two blu
8.1.2 One blu
ACTORY DEFAULT MODE ............................................................................................................................................ 32
OFTWARE ..................................................................................................................................................................32
UROPE – EU DECLARATION OF CONFORMITY .......................................................................................................................... 34
AND INDUSTRY CANADA STATEMENTS ............................................................................................................................... 34
(ELECTROSTATIC DISCHARGE).......................................................................................................................................... 35
DDITIONAL STATEMENT ........................................................................................................................................................... 35
Modules.......................................................................................................................................... 30
2i
Module and Bluetooth PC using TDK’s USB Adaptor or PC Card................................................. 31
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Before You Begin
Congratulations on your purchase of the TDK Systems blu
2i
Module.
The Module is designed to be built into a device and to provide a simple,
low cost Bluetooth interface. The module is designed to integrate with a
wide range of applications and platforms with a simple electrical and
software interface using AT commands.
This guide aims to provide all the electrical and mechanical information
needed to design applications using the blu
document, blu
2i
Module - AT Command Set, outlines the protocol for the
2i
Module. A separate
software interface.
Safety Guidelines
The following safety precautions must be observed during all phases of
the operation, usage, service or repair of any application incorporating
this Bluetooth Module. Manufacturers of the RF equipment are advised
to convey the following safety information to users and operating
personnel and to incorporate these guidelines into all manuals supplied
with the product. Failure to comply with these precautions violates safety
standards of design, manufacture and intended use of the product. TDK
Systems assumes no liability for customer failure to comply with these
precautions.
RF Approvals
The blu
Bluetooth SIG Program Reference Document (PRD). This means that it
can be integrated into end products without further testing or approval
listing. The manufacturer must state the TDK part number and product
reference in his literature in order to meet the requirements of the
Bluetooth and regulatory approvals.
A list of the countries where the module is approved will be provided by
TDK Systems as required. As a minimum the product is listed in Europe,
Scandinavia and USA. TDK Systems assumes no liability for customer
failure to comply with national RF approvals.
2i
Module is listed as a Bluetooth Product in terms of the
3 of 36
Functions 1
The blu
2i
Module contains a complete Bluetooth interface and requires
no further hardware to implement full Bluetooth communication. The
module has an integrated, high performance antenna together with all
RF and Baseband circuitry, it interfaces to the host over a straight
forward serial port using AT commands. The module runs specific
firmware within the Virtual Processor that includes a serial Port Profile
and AT command interpreter. The module can be configured so that it
can be attached to a ‘dumb’ terminal or attached to a PC or PDA for
cable replacement applications.
The module provides access to 5 General I/O lines and 2 analogue I/O
lines to provide Bluetooth connection to simple devices such as switches
or LEDs without requiring any processing at the module end.
2i
blu
Module features at a glance:
Feature Implementation
Bluetooth Transmission Class 1
Frequency 2.400 – 2.485Ghz
Minimum Transmit Power +0dBm
Maximum Transmit Power +6dBm
Receive Sensitivity Better than -85dB
Antenna Gain +2dBi
Range (see Section 6.1.3) Up to 100 metres, free space
Data Transfer Rate Up to 200Kbps
Physical size 24 x 69 x 5 mm
Weight 8g
Fully Bluetooth pre-qualified Bluetooth 1.1 PRODUCT listing
Current consumption Less than 36mA during data
transfer
Temperature Range -20°C to +75°C
Audio Audio can be transferred over
SCO channels through the PCM
interface at 64Kbps
4 of 36
Application Interface 2
The blu
connector that connects to the application platform. Electrical and
mechanical characteristics of the board-to-board connector are specified
in Chapter 3.
2i
Module is equipped with a 40-pin 0.5mm pitch board to board
• Serial interface (see Section 3.0)
• Electrical specification of the interface (see Section 3.1)
2.1 Serial Interface
UART_TX, UART_RX, UART_RTS and UART_CTS form a conventional
asynchronous serial data port. The interface is designed to operate
correctly when connected to other UART devices such as the 16550A.
The signalling levels are nominal 0V and 3.3V and are inverted with
respect to the signalling on an RS232 cable. The interface is
programmable over a variety of bit rates; no, even or odd parity; stop bit
and hardware flow control. The default condition on power-up is preassigned in the external Flash. Two-way hardware flow control is
implemented by UART_RTS and UART_CTS. UART_RTS is an output
and is active low. UART_CTS is an input and is active low. These
signals operate according to normal industry convention.
By writing different values to the S register the UART_RI can be
continuously polled to detect incoming communication. The UART_RI
signal serves to indicate incoming calls.
UART_DSR is an active low input. It should be connected to DTR output
of the host. When the module is running in high speed mode (See
definition for S Register 512), this pin should be asserted by the host to
ensure connection is maintained. A deassertion is taken to mean that the
connection should be dropped, or an online command mode is being
requested.
The module communicates with the customer application using the
following signals:
RS-232
• Port /TXD @ application sends data to the module’s UART_RX
signal line
• Port /RXD @ application receives data from the module’s
UART_TX signal line
5 of 36
blu2i Module Application
/
UART Interface
UART_TX /RXD
UART_RX /TXD
UART_CTS /RTS
UART_RTS /CTS
UART_DTS /DTR
UART_DTR /DSR
UART_DCD /DCD
UART RI
RING
RS232 Interface
Figure: UART interfaces
2.2 Power Supply
The power supply for the blu
of Vcc= 3.6V to 6V. It must be able to provide sufficient current in a
transmit burst which can rise to 65mA.
The module includes regulators to provide local 3.3V and 1.8V. These
rails are accessible on connector J2 for monitoring.
Power (Vcc) should be provided via the board-to-board connector Pin 29
on J2.
Section 5.3 details the power consumption in different modes.
2i
Module has to be a single voltage source
2.3 Power-On-Reset (Power Cycling and Brown Out
considerations)
The Module is provided with an active high reset pin (Hirose 40 way
DF12C connector pin 13). This pin whose electrical specification may be
found in section 3.3 is internally pulled to ground through a 10KΩ
resistor. Upon the application of power, the Power On Reset circuit built
into the module will ensure that the unit starts correctly.
However the module utilises a split rail design with some components
working at 3V3 and some at 1V8. Under certain extreme conditions, for
6 of 36
example when the supply voltage to the module experiences a BrownOut (momentary dip in the supply voltage level), or a rapid power cycle
i.e. the power is switched off and then on within 1second, there is a
possibility that the module can enter an unknown state of operation.
It is strongly recommended that the application hardware onto which the
module is mounted provides a Power-On-Reset circuit with a Brown-Out
detection capability. This will guarantee that under all circumstances the
module will operate in a known state.
A device such as the Maxim MAX6382XR26D3-T would be a suitable
part to perform the reset – it has an active high push-pull output, a 2.63V
detection threshold, and an active reset period of 140ms. This
inexpensive device is available in a SC70-3 package (2.2mm x 2.4mm)
and requires no additional components to operate. The device is used to
monitor the output of the voltage regulator on the module (through pin
27), and drives the Reset line (pin13) high when the supply voltage falls
out of tolerance. The schematic below illustrates its use.
1
GND
3
Vcc
MAX6382
Please note that this 3V3 is the output of
the 3V3 regulator on the blu2i Module and
should not be connected to any other
supplies on the application hardware.
ResetGnd
2
BC02 3V3
BC02 MRESET
blu2i Module
Pin27
Pin13
10K
GND
7 of 36
2.4 SPI Bus
The module is a slave device that uses terminals SPI_MOSI, SPI_MISO,
SPI_CLK and SPI_CSB. This interface is used for program firmware
update.
Note: The designer should be aware that no security protection is built
into the hardware or firmware associated with this port, so the terminals
should not be permanently connected in a PC application.
2.5 Parallel PIO Port
Five lines of programmable bi-directional input/outputs (I/O) are
provided. GPIO[1:5] are powered from VCC. The mode of these lines
can be configured and the lines are accessed via S Registers 621 to
625.
Auxiliary functions available via these pins include an 8-bit ADC and an
8-bit DAC. This function is not implemented at this time.
2.6 PCM Codec Interface
PCM_OUT, PCM_IN, PCM_CLK and PCM_SYNC carry up to three bidirectional channels of voice data, each at 8K samples/s. The format of
the PCM samples can be 8-bit A-law, 8-bit µ-law, 13-bit linear or 16-bit
linear. The PCM_CLK and PCM_SYNC terminals can be configured as
inputs or outputs, depending on whether the module is the Master or
Slave of the PCM interface.
The blu
interfaces directly to PCM audio devices including the following:
2i
module is compatible with the Motorola SSI TM interface and
• Qualcomm MSM 3000 series and MSM 5000 series CDMA
baseband devices
• OKI MSM7705 four channel A-law and µ-law CODEC
• Motorola MC145481 8-bit A-law and µ-law CODEC
• Motorola MC145483 13-bit linear CODEC
8 of 36
Electrical specification of the interface 3
The Hirose DF12C board to board connector on the module is a 40 way
double-row receptacle. The pin allocation is as follows:
Pin Signal Description Pin Signal Description
1 Analogue 0 1.8v Max 2 GPIO1 I/O for Host
3 Analogue 1 1.8v Max 4 GPIO2 I/O for Host
5 SPI_MISO SPI bus serial
O/P
7 SPI_CSB SPI bus chip
select I/P
9 SPI_CLK SPI bus clock
I/P
11 GND 12 GPIO3/UART
13 RESET Reset I/P 14 GPIO4 I/O for Host
15 GND 16 GPIO5 I/O for Host (Left
17 SPI_MOSI SPI bus serial
I/P
19 UART_CTS Clear to Send
I/P
21 UART_TX Transmit Data
O/P
23 UART_RTS Request to
Send O/P
25 UART_RX Receive Data
I/P
27 VCC_3V3 3.3V Output
(Note 3)
29 VCC_5V 3.6V < VIN <
6.0V
31 N/C 32 RESERVED Do not connect
33 N/C 34 RESERVED Do not connect
35 N/C 36 GND
37 N/C 38 GND
39 VCC_1V8 1.8V Output
(Note 3)
6 UART_RI ‘Ring’ Input or
Output
8 UART_DCD Input or Output
10 UART_DSR Input
I/O for Host
_DTR
(Right LED)(2)
LED) (2)
18 GND
20 PCM_CLK PCM Clock I/P
22 PCM_IN PCM Data I/P
24 PCM_SYNC PCM Sync I/P
26 PCM_OUT PCM Data O/P
28 N/C
30 GND
40 N/C
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Notes:
• UART_RX, UART_TX, UART_CTS, UART_RTS, UART_RI,
UART_DCD and UART_DSR are all 3.3v level logic. For example,
when RX and TX are idle they will be sitting at 3.3V. Conversely
for handshaking pins CTS, RTS, RI, DCD, DSR a 0v is treated as
an assertion.
• Pin 6 (UART_RI) is active low. It is normally 3.3v. When a remote
device initiates a connection, this pin goes low. This means that
when this pin is converted to RS232 voltage levels it will have the
correct voltage level for assertion.
• Pin 8 (UART_DCD) is active low. It is normally 3.3v. When a
connection is live this pin is low. This means that when this pin is
converted to RS232 voltage levels it will have the correct voltage
level for assertion.
• Pin 10 (UART_DSR) is an input, with active low logic. It should be
connected to the DTR output of the host. When the blu
2i
Module is
in high speed mode (See definition for S Register 512), this pin
should be asserted by the host to ensure that the connection is
maintained. A deassertion is taken to mean that the connection
should be dropped, or an online command mode is being
requested.
• The GPIOn pins can be accessed using S Registers 621 to 625
• GPIO4 and GPIO5 are also connected to LEDs on the module. If
these I/O pins are set for input, then the LED will be driven by the
host and appropriate drive current requirements must be satisfied.
By default GPIO4 is used to drive the right LED which indicates
connection status. A Logic 1 switches on the LED.
• Analogue 0 and 1 should not exceed 1.8v and S Registers 7xx are
used to access them.
• GPIO3 is used for DTR output (active low).
10 of 36
3.1 Electric Characteristics
Function Signal Name Pin No I/O Signal level Comments
Power
Supply
GND 11, 15,
RS232
Interface
UART_RX 25 I
UART_CTS 19 I
UART_RTS 23 O
UART_DSR 10 I
UART_DTR 12 O
UART_RI 6 I or O
UART_DCD 8 I or O
External
Power
Supply
VCC_3V3 27 O 3.3V typical
SPI Bus SPI_MOSI 17 I
SPI_MISO 5 O
SPI_CSB 7 I
SPI_CLK 9 I
Vcc 29 I 3.6V to 6V Ityp = 50mA
6 Ground
18, 30,
36, 38
terminals to
be attached
in parallel
UART_TX 21 O
max=0.2V
V
OL
V
min=2.8V
OH
max=0.8V
V
IL
V
min=2.10V
IH
VIHmax=3.7V
max=0.8V
V
IL
V
min=2.10V
IH
V
max=3.7V
IH
max=0.2V
V
OL
V
min=2.8V
OH
max=0.8V
V
IL
V
min=2.10V
IH
V
max=3.7V
IH
max=0.2V
V
OL
V
min=2.8V
OH
O/P : V
V
I/P : V
V
V
max=0.2V
OL
min=2.8V
OH
max=0.8V
IL
min=2.10V
IH
max=3.7V
IH
O/P : VOLmax=0.2V
VOHmin=2.8V
I/P : V
V
max=0.8V
IL
min=2.10V
IH
Shared with
GPIO3
Direction
may be
programme
d.
Direction
may be
programme
d.
VIHmax=3.7V
VCC_1V8 39 O 1.8V typical For
monitoring
only. No
current
source
max=0.8V
V
IL
V
min=2.10V
IH
V
max=3.7V
IH
max=0.2V
V
OL
V
min=2.8V
OH
max=0.8V
V
IL
V
min=2.10V
IH
V
max=3.7V
IH
max=0.8V
V
IL
Used to
reprogram
Flash
11 of 36
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