EZURIO TRBLU024-00100, TRBLU024-00200, TRBLU024-00300, TRBLU024-00400 User Manual

www.ezurio.com

Embedded USB / HCI Bluetooth™ Module

Part Numbers: TRBLU024-00100, TRBLU024-00200, TRBLU024-00300, TRBLU024-00400

1. General Description

Ezurio’s Embedded Intelligent Bluetooth Serial Module is a fully integrated and qualified Class 1 Bluetooth solution designed for lowest cost of integration and ownership for designers wishing to include Bluetooth functionality in their products. The module is qualified to Bluetooth Version 2.0.

The Embedded Intelligent Bluetooth Serial Module is designed to give a rugged solution that is ideal for industrial automation and ruggedised handheld devices. It works over a wide temperature range of -40°C to +85°C. The physical form of the module allows designers to mount the antenna section of the module outside a screened enclosure.

The Embedded Intelligent Serial Module is based on Cambridge Silicon Radio’s BlueCore4 chipset. The module contains all of the hardware and firmware for a complete Bluetooth solution, requiring no further components. The Module has an integrated, high performance antenna which is matched with the Bluetooth RF and baseband circuitry. The firmware integrated into the module implements the higher layer Bluetooth protocol stack, up to and including the Generic Access Profile (GAP), Service Discovery Profile (SDAP), Serial Port Profile (SPP) and Audio Gateway. A virtual processor is used within the BC04 to implement an AT command processor. This interfaces to the host system over a straight forward serial port using an extensive range of AT commands. The AT command set abstracts the Bluetooth protocol from the host application, saving many months of programming and integration time. It provides extremely short integration times for data oriented cable replacement and voice applications. A low cost development system and integrated RS232 products with the same firmware are available for fast product evaluation and development.

An alternative version of firmware is available that provides support for multi-point applications.

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.

In addition to the Bluetooth functionality, The Embedded Intelligent Serial Module provides access to 6 General I/O lines and one ADC input. These can be configured to extend the UART control or to provide connection to simple devices such as switches or LEDs without requiring any external processing. The GPIO lines can be accessed either via the wired host UART connection, or remotely over the Bluetooth link. Support is also provided for a PCM connection to an external audio codec.

The Embedded Intelligent Bluetooth Module is supplied in a small form factor PCB (17.7mm x 46.0mm x 5.0mm), that solders directly. The module includes a high sensitivity, high gain antenna which provides excellent range. Typical open field performance provides ranges of over 250 metres at transmit powers of 4mW.

Support is provided for low power modes that make the Embedded Intelligent Bluetooth Module particularly applicable to battery powered installations.

The Embedded Intelligent Bluetooth Module is Lead-free and RoHS compliant and supports an industrial operating temperature range of -40°C to +85°C.

1.1 Applications

• POS Equipment • Automotive Applications

• Industrial Automation • Telematics

• Vending Equipment • Medical

• Windows CE solutions • Embedded Windows XP Applications

• Audio Applications

Bluetooth is a trademark owned by Bluetooth SIG, Inc., USA, and is licensed to Ezurio Ltd

www.ezurio.com

2. Features

Feature Implementation

Bluetooth Transmission Class 1

Fully Bluetooth pre-qualified Bluetooth 2.0

Range 250 metres typical (free space)

Frequency 2.400 – 2.485 GHz

Max Transmit Power +6dBm

Min Transmit Power -27dBm

Receive Sensitivity Better than -86dB

Data Transfer rate 2.1 Mbps max data rate. 3.0 Mbps symbol,rate

Serial Interface USB 1.2 compliant HCI interface

Physical size 17.7mm x 46.0mm x 5.0mm, 8g

Current consumption Less than 36mA during data transfer in standard power mode. Lower powers

Low power sniff mode 2.5mA typ

Temperature Range Normal operation: -40°C to +85°C

Supply Voltage 3.3V – 7.0V

Audio Audio can be transferred over SCO channels through the PCM interface at

Profiles Server - SPP (Full), DUN, Audio Gateway, Headset, Handsfree

Multipoint Max 7 slaves with multipoint

Field upgradeable Over USB interface

GPIO 6 x digital (DTR can also be allocated as GPIO)

ADC 1 x 8 bit

Indicators Pads for 2 programmable LEDs

Lead free Lead-free and RoHS compliant

are attainable with a configurable low power mode.

64kbps. PCM can be configured as master or slave.

Support for dual slave PCM connections.

Client - All RFCOMM based profiles

3. Functional Block Diagram

www.ezurio.com

3.1 Connection Diagram

The Module is connected to a “mother” PCB by direct soldering to edge pads. Pads adjacent to the antenna do not provide an electrical connection, but are used for additional mechanical stability.

Antenna

www.ezurio.com

3.2 Pin Descriptions

The table below defines the pin functions. Refer to the previous section for the pin location.

Pin No.

Signal Description Pin

No.

Signal Description

1 Vcc 2 USB D+

3 USB D- 4 GND

5 RESET Reset I/P * 6-19 N/C Do not Connect

20 GND 21-33 N/C Do not Connect

34 MPIO_10 (LED1) I/O for Host 35 MPIO_11 (LED2) I/O for Host

36-42 N/C Do not Connect

* The reset line has a fixed 10kOhm pull up resistor to ground.

3.3 Electrical Specifications

3.3.1 Absolute Maximum ratings

Absolute maximum ratings for supply voltage and voltages on digital and analogue pins of the Module are listed below; exceeding these values will cause permanent damage.

Parameter Min Max Unit

Peak current of power supply 0 100 mA

Voltage at digital pins -0.3 3.7 V

Voltage at POWER pin 3.6 7 V

3.3.2 Recommended Operating Parameters

3.3.2.1 Power Supply

Absolute maximum ratings for supply voltage and voltages on digital and analogue pins of the Module are listed below; exceeding these values will cause permanent damage.

Parameter Min Max Unit

Peak current of power supply 0 100 mA

Voltage at digital pins -0.3 3.3 V

Voltage at POWER pin 3.3 7 V

3.3.2.2 Power Supply

Signal Name Pin No I/O Voltage level Comments

Vcc 1 I 3.3V to 7.0V I

GND 4, 20, 29

The module contains a power on reset circuit that ensures the module is reset at power on. The internal reset circuit is triggered when the input voltage to the module drops below ~1.7V and is hence only suitable for providing a power on reset signal. If the supply voltage to the module can drop below the minimum voltage level in normal operation, then it is recommended that an external brownout circuit is provided to assert the module reset and to ensure that the module is reset when the module supply voltage drops below 3.1V.

= 30mA

typ

www.ezurio.com

This will ensure that the module will return to an operational state when the supply voltage comes back within specification. For example, if the module supply can drop to 2.7V and then be restored to 3.3V there is no guarantee that the module will still be operational unless the reset signal has been asserted.

3.3.2.3 UART Specific Recommendations

Function Signal Name Pin No I/O Signal level Comments

USB D- 3 I VILmax =0.3vdd_usb

VIHmin =0.7vdd_usb

USB D+ 2 I VILmax =0.3vdd_usb

VIHmin =0.7vdd_usb

Normally inactive. Pull to GND through 10K

Reset RESET 5 I Threshold 2.6V Active LOW

Terminology: USB Signal Levels. vdd_usb refers to the internal voltage generated by the LDO regulator on the module, which is typically 3.3V. Hence 0.3vdd_usb and 0.7vdd_usb correspond to

1.0V to 2.3V. If Vcc falls below the recommended minimum of 3.6V, these values will be reduced.

3.3.2.4 General Purpose I/O and ADC

Signal Name Pin No I/O Signal level Comments

GPIO 4, 5, 6, 7, 8, 9

GPIO 3 27 I or O O/P : VOLmax=0.2V

ADC 0 37 I Range 0 – 1.8V ADC

36, 35, 6, 7, 38, 34

I or O O/P : VOLmax=0.2V

VOHmin=2.8V

I/P : VILmax=0.8V

VIHmin=2.1V

VIHmax=3.4V

VOHmin=2.8V

I/P : VILmax=0.8V

VIHmin=2.1V

VIHmax=3.4V

GPIO_4 and 5 are shared with the onboard LED pads.

GPIO_9 is also used for PCM_SLVCLK.

Shared with DTR

PIO lines can be configured through software to be either inputs or outputs with weak or strong pull-ups or pulldowns. At reset, all PIO lines are configured as inputs with weak pull-downs.

3.3.2.5 PCM Interface

Signal Name Pin No I/O Signal level Comments

PCM_CLK 32 I or O O/P : VOLmax=0.2V

VOHmin=2.8V

I/P : VILmax=0.8V

VIHmin=2.1V

VIHmax=3.4V

PCM_IN 31 I VILmax=0.8V

VIHmin=2.1V

VIHmax=3.4V

PCM_SYNC 30 I or O O/P : VOLmax=0.2V

VOHmin=2.8V

I/P : VILmax=0.8V

If unused keep pins open

www.ezurio.com

VIHmin=2.1V

VIHmax=3.4V

PCM_OUT 33 O VOLmax=0.2V

VOHmin=2.8V

PCM_SLV_CLK

(GPIO9)

O O/P : VOLmax=0.2V

VOHmin=2.8V

Available as a clock when two connected devices are both in PCM slave mode.

Shared with GPIO_9

4. I/O Characteristics

4.1 Power Consumption

The hardware specification for the Module allows for a voltage range of 3.3 to 7.0 at Vcc. Tests have shown that there is no significant difference in current draw when Vcc is 5 or 6V. Tests have shown that where power drain is an issue, it is best to keep Vcc at the lower end of the range.

With regards to operating mode the significant modes are; idle, waiting for a connection, inquiring, initiating a connection, sniff and connected. With connected mode, it is also relevant to differentiate between no data being transferred and when data is being transferred at the maximum rate possible.

The firmware within the USB/HCI module will always attempt to place the module into the lowest possible power configuration.

5. DC Characteristics

5.1 RF Performance

5.1.1 Transmit Power

Conducted Transmit Power min: 1.0mW (0dBm) max: 4mW (6dBm)

Antenna Gain +2dBi typ.

Effective Transmit Power min:0dBm Max: +6dBm

Output power can be reduced by program control via the HCI interface

5.1.2 Receive Sensitivity

Receive Sensitivity (Typ) -86dBm (at 25°C)

Antenna Gain +2dBi typ

Effective Receive Sensitivity -88dBm (at 25°C)

6. Functional Description

The Embedded USB / HCI Bluetooth module is a fully featured HCI Bluetooth product and requires only power and an external higher layer Bluetooth stack to implement full Bluetooth communication.

+ 14 hidden pages

EZURIO TRBLU024-00100, TRBLU024-00200, TRBLU024-00300, TRBLU024-00400 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual