Radicom Research RB540 Class 1 BT audio module User Manual

Radicom Research Inc Class 1 BT audio module Users Manual

Users Manual

Radicom Research, Inc. Preliminary Designer’s Guide for the RB540(-a/-c) MDK5000 Kit RoHS Serial TTL Bluetooth Modules RoHS Compliant November 21, 2014 RB540-a RB540-c RB540HM(-a/-c)
Table of Contents Introduction ...................................................................................................... 3 Features ............................................................................................................ 4 Applications ..................................................................................................... 4 Specifications ................................................................................................... 5 RB540 Module Block Diagram ......................................................................... 6 Model and Ordering Information ....................................................................... 7 FCC & IC Label and Model Identification ........................................................ 8 Federal Communication Commission Interference Statement ............................ 9 Industry Canada Statement ............................................................................... 11 CE Declaration of Conformity .......................................................................... 14 Layout Design Considerations .......................................................................... 15 RB540 Series SMD Module Mechanical Diagram & Pin Assignments .............. 16 Recommended RB540-c SMD Module PCB Layout Dimension ............................. 17 Recommended RB540-a SMD Module PCB Layout Dimension ............................. 18 RB540 Series SMD Module Interface Signal Definitions .................................. 19 RB540HM (-a/-c) Mechanical Drawing .......................................................................... 22 RB540HM (-a/-c) Interface Signal Definitions .................................................. 23 RB540MB Development Board Figure & Functional Descriptions .................... 23 Operating the RB540MB for Standard RX ........................................................... 24 Operating the RB540MB for TrueWireless Stereo Sound .................................. 25 Operating the RB540MB for Tx/Rx (two-way SCO Link) .............................................. 26 Operating the RB540MB for Tx/Rx (one-way A2DP) .................................................... 27 Upgrading the Firmware in the RB540 series ..................................................... 29 SPI Programming Connector (JP1) ................................................................... 29 Suggested Microphone Circuit .......................................................................... 30 Suggested Differential to Single End Circuit ......................................................... 30 Suggested LED Circuit ...................................................................................... 30 Limited Warranty ............................................................................................. 31 Contacting Radicom........................................................................................... 33 Information furnished by Radicom is believed to be accurate and reliable. However Radicom assumes no responsibility for its use, or any infringement of patents or other rights of third parties that may result from its use. Radicom reserves the right to change circuitry at any time without notice. This document is subject to change without notice.
3 Introduction Thank you for purchasing Radicom’s RB540 series Class 1 Bluetooth multimedia module. We are committed to providing you quality service and technical support. The RB540 series module is designed to meet requirements for long-range wireless audio functionality. The RB540 series offers a quick and simple solution for adding wireless audio Bluetooth communications to OEM’s products. The RB540 series are embedded Class 1 Bluetooth modules using BlueCore5-External Chipset from CSR, the leader in Bluetooth chipsets. These Bluetooth radio modules combine Bluetooth Basic Rate (BR) technology to provide increased throughput, reduced battery consumption and improved security. They also provide faster pairing and allow superior performance in the presence of interference from 802.11 WiFi wireless devices and other 2.4GHz radios. The RB540 series has on board flash memory available to upgrade the module’s firmware, modify parameters, or implement custom features. Radicom can modify the firmware to meet OEM requirements and create custom Bluetooth functionality to meet your specific needs. The RB540 series supports AV, handset, hands-free wireless profiles to create a connection between two devices such as MP3/CD players, mobile phones, tablet, desktop or notebook computers, PDA…etc. Containing all of the necessary software stacks and hardware I/O, the RB540 series is perfect for designing a custom Bluetooth Audio product by simply adding components such as a microphone, speaker, LED, buttons, headset housing, etc.
4 Features • Bluetooth 3.0 support • Class 1 radio, transmission power 20dbm Max • AV profile, HSP (Head-Set Profile), and HFP (Hands-Free Profile) • AVRCP (Audio Video Remote Control Profile) • GAP (Generic Access Protocol) • SDP (Service Discovery Protocol) • A2DP (Advanced Audio Distribution Profile) • L2CAP (Logical Link Control and Adaptation Protocol) • SPP (Serial Port Profile) & HID (Human Interface Device Profile) Optional support • Up to 16Mbits flash memory on board (firmware dependent ~ 8Mbits typical) • Secure communications with 128-bit encryption • Supports 802.11 wireless co-existence • Enhanced Audibility and Noise Cancellation • Integrated switching regulator • RB540HM-a Onboard antenna or RB540HM-c with an U.FL connector for external antenna • 64MIPS Kalimba DSP co-processor • 16-bit internal stereo CODE-95dB SNR for DAC • True Bluetooth Stereo Sound (Optional firmware required) Applications • High quality stereo wireless headsets • High quality mono headsets • Hands-free car kits • Wireless speakers • VOIP headsets • Bluetooth-Enable Automotive wireless Gateways • Custom application specific Firmware is feasible. Contact Radicom for more information.
5 Specifications Dimensions RB540-a: 0.7” x 1.55” x 0.10” RB540-c: 0.7” x 1.33” x 0.10” RB540HM(-a/-c): 1.02” x 1.83” x 0.39” Device Type Embedded Bluetooth OEM module Audio Interface Microphone Input / Speaker Outputs Frequency ISM 2.4 GHz short-range radio frequency band Frequency Range 2.400 – 2.483.5 GHz Basic Rate (BR) Modulation and Data Rate GFSK (1Mbps) Max Transmit Power +20dBm Receive Sensitivity -87dBm Bluetooth Class Class 1 Range More than 100 meters (33 feet, basic rate, line of sight) On Board Flash 8Mbits(typical), 16Mbits(optional) Compliant Standards Bluetooth V3.0 Security 128-bit encryption (Optional) Supply Voltage: 3V3 pin 3.1-3.6V On board Antenna Gain (RB540-a & RB540HM-a) 1dBi RF Input Impedance 50ohms Receiving Signal Range -87dBm to –20dBm Typical Operating Temperature -40ºC to +85ºC Environmental RoHS compliant Current Consumption (within 3m RF range) Stand by: 4mA SCO link (under calling): 43mA A2DP streaming (music play): 45mA
6 RB540 Module Block Diagram
7 Model and Ordering Information Model Number Description RB540-a Surface mount, long range Class 1 Bluetooth Audio module with PCB antenna. Model: RB540-a (8M FLASH-default) RB546-a (16M FLASH)     !"#""#$%&% &'(#!()!"#""#$%&% &'#!()!"#""#$ RB540-c Surface mount, long range Class 1 Bluetooth Audio module for external antenna. Model: RB540-c (8M FLASH-default) RB546-c (16M FLASH)    !"#""#$%&% &'(#!()!"#""#$%&% &'#!()!"#""#$ RB540HM (-a/-c) Dual-in-line, Dip (through-hole) Bluetooth Audio module. Typical 8Mbits FLASH and 16Mbits FLASH optional. Model: RB540HM-a: With on-board PCB antenna Model: RB540HM-c: External antenna MDK5000 (-a/-c) RB540 Evaluation Kit. The MDK5000 Kit contains a RB540MB with a RB540HM(-a/-c). Each kit consists of the following components: 1 ~ RB540HM (-a/-c) mounted on a RB540MB Main Board. 1 ~ USB Power cable (A to B) 1 ~ SPI cable for firmware upgrade 1 ~ external antenna (optional for RB540HM-c) 1 ~ antenna cable (optional for RB540HM-c) ATN-2d-RP-SMA RB540HM-c Replacement antenna, 2.4GHz, 2dBi, RP-SMA, Omni-directional. AC6i-RP-SMA RB540HM-c 6" U.FL. to RP-SMA female connector antenna cable.
8 FCC & IC Label and Model Identification The RB540 module family is FCC Part 15 and IC (Industry Canada) certified. The RB540 is also CE marked. The modules are labeled with the RB540 module model number and FCC Part 15 ID, IC registration number and CE mark. The label can be found on top of the metal shielding on the RB540 Module. Location: Radicom Research Inc. Model: RB540-c FCC ID: K7T- RB540 IC: 2377A- RB540 Radicom Research Inc. Model: RB540-a FCC ID: K7T- RB540 IC: 2377A- RB540 Label Module board
9 Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. IMPORTANT NOTE: FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
10 This device is intended only for OEM integrators under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna, As long as 1 condition above is met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed IMPORTANT NOTE In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End Product Labeling The final end product must be labeled in a visible area with the following: “Contains FCC ID: K7T-RB540”. Manual Information to the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual.
11 Industry Canada statement: This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions: (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme aux CNR exemptes de licence d'Industrie Canada. Son fonctionnement est soumis aux deux conditions suivantes: (1) Ce dispositif ne peut causer d'interférences; et(2) Ce dispositif doit accepter toute interférence, y compris les interférences qui peuvent causer un mauvais fonctionnement de l'appareil. Radiation Exposure Statement: This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. Déclaration d'exposition aux radiations: Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 20 cm de distance entre la source de rayonnement et votre corps.
12 This device is intended only for OEM integrators under the following conditions: 1) The transmitter module may not be co-located with any other transmitter or antenna. As long as 1 condition above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed. Cet appareil est conçu uniquement pour les intégrateurs OEM dans les conditions suivantes: 1) Le module émetteur peut ne pas être coïmplanté avec un autre émetteur ou antenne. Tant que les 1 condition ci-dessus sont remplies, des essais supplémentaires sur l'émetteur ne seront pas nécessaires. Toutefois, l'intégrateur OEM est toujours responsable des essais sur son produit final pour toutes exigences de conformité supplémentaires requis pour ce module installé. IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the Canada authorization is no longer considered valid and the IC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate Canada authorization. NOTE IMPORTANTE: Dans le cas où ces conditions ne peuvent être satisfaites (par exemple pour certaines configurations d'ordinateur portable ou de certaines co-localisation avec un autre émetteur), l'autorisation du Canada n'est plus considéré comme valide et l'ID IC ne peut pas être utilisé sur le produit final. Dans ces circonstances, l'intégrateur OEM sera chargé de réévaluer le produit final (y compris l'émetteur) et l'obtention d'une autorisation distincte au Canada. End Product Labeling The final end product must be labeled in a visible area with the following: “Contains IC:2377A-RB540”. Plaque signalétique du produit final
13 Le produit final doit être étiqueté dans un endroit visible avec l'inscription suivante: "Contient des IC: 2377A-RB540". Manual Information to the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. Manuel d'information à l'utilisateur final L'intégrateur OEM doit être conscient de ne pas fournir des informations à l'utilisateur final quant à la façon d'installer ou de supprimer ce module RF dans le manuel de l'utilisateur du produit final qui intègre ce module. Le manuel de l'utilisateur final doit inclure toutes les informations réglementaires requises et avertissements comme indiqué dans ce manuel. This radio transmitter (IC: 2377A-RB540) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device Cet émetteur radio (IC: 2377A-RB540) a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés ci-dessous avec le gain maximal admissible indiqué. Types d'antennes ne figurent pas dans cette liste, ayant un gain supérieur au gain maximum indiqué pour ce type, sont strictement interdits pour une utilisation avec cet appareil Type Manufacture Gain Connector Brito 2.0 RP-SMA
14 CE Declaration of Conformity For the following equipment: Radicom Research Inc. Wi-Fi Module Mode(s): RB540-a, RB540-c are herewith confirmed to comply with the requirements set out in the Council (European parliament) Directive on the Approximation of the Laws of the Member States relating to Electromagnetic Compatibility of Radio and Telecom device (1999/5/CE). For the evaluation regarding this Directive, the following standards were applied: EN 300328 V1.8.1: 2012 EN 62311:2008(MPE) EN 301489-1 V1.9.2:2011 EN 301489-17 V2.2.1:2012 EN 60950-1:2006+A11:2009+A1:2010+A12:2011 This equipment is marked with and can be used throughout the European community. Europe – R&TTE Compliance Statement: Hereby, Radicom Research Inc. declares that this equipment complies with the essential requirements and other relevant provisions of DIRECTIVE 1999/5/CE OF THE EUROPEAN PARLIAMENT AND THE COUNCIL of March 9, 1999 on radio equipment and telecommunication terminal Equipment and the mutual recognition of their conformity (R&TTE).
15 Layout Design Suggestions • General Layout Rules- All Printed Circuit Boards must comply with UL94V0 standard for flammability. Always use RoHS compliant Parts and materials. • Suggestions for Layout: 1. Do not place Power circuit, X’tal, Inductor, etc. near RF area. 2. The bigger Antenna clearance area, the better. The Antenna itself needs to stay away from any circuit or component at least 2mm. Antenna clearance area means Top and Bottom both required to be cleared. 3. Do not use metal materials on design where near Antenna area. For example, battery snaps, USB connector, iron case, etc. These guidelines are for design reference; real performance still depends on actual design.
16 RB540 Series SMD Module Mechanical Diagram & Pin Assignments Module Dimension: RB540-a: 0.70” x 1.55” x 0.10” RB540-c: 0.70” x 1.33” x 0.10” * Height = 0.10” (2.60mm)-including PCB and shield case
17 Recommend RB540-c SMD Module PCB Layout Dimension
18 Recommend RB540-a SMD Module PCB Layout Dimension
19 RB540 Series SMD Module Interface Signal Definitions Pin# Pin Name Type Description I/O Voltage range 1 GND - Ground --- 2 RF I/O RF input/output --- 3 GND - Ground --- 4 GND - Ground --- 5 3V3 I 3.3V input VDD: 3.1V – 3.6V 6 GND - Ground --- 7 PIO(3) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 8 PIO(2) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 9 AIO(1) I/O Programmable I/O line Range: 0V ~ 1.5V 10 AIO(0) I/O Programmable I/O line Range: 0V ~ 1.5V 11 UART_CTS I UART clear to send, active low Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD 12 UART_RTS O UART request to send, active low Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 13 PIO(10) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 14 UART_TX I UART data output, active low Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 15 UART_RX O UART data input, active low (idle status high) Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD 16 CALL_END PIO(15) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 17 USB_DN I/O USB Data Negative Vih: 0.7 VDD – VDD Vil: 0V - 0.3 VDD Voh: 2.8V – VDD Vol: 0 – 0.2V 18 USB_DP I/O USB Data Positive Vih: 0.7 VDD – VDD Vil: 0V - 0.3 VDD Voh: 2.8V – VDD Vol: 0 – 0.2V 19 LINEIN_DET PIO(9) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 20 SPI_MOSI I Synchronous serial interface data input Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD 21 SPI_CLK I Synchronous serial interface Clock Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD 22 SPI_CSB I Chip select for Synchronous Serial interface Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD
20 Pin# Pin Name Type Description I/O Voltage range 23 SPI_MISO O Synchronous serial interface data output Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 24 A19 I Dual mode selection (8Mb default pull low) Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 25 VOL- PIO(14) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 26 BAT_CHECK PIO(11) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 27 MUTE PIO(5) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 28 I2C_SCL PIO(6) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 29 PCM_IN I Synchronous PCM data input Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD 30 PCM_SYNC I/O Synchronous PCM data strobe Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 31 PCM_OUT O Synchronous PCM data output Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 32 PCM_CLK I/O Synchronous PCM data clock Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 33 VOL+ PIO(12) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 34 I2C_SDA PIO(7) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 35 PIO(8) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 36 PIO(4) I/O Programmable I/O line Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 37 VREGEN_H I Internal SMPS 1.8v enable Vih: 2.0V – 4.9V Vil: 0V – 0.6V 38 GND - Ground --- 39 1V8 I 1.8V Voltage input 1.70V – 1.95V 40 LX O Internal SMPS 1.8V output 1.70V – 1.95V 41 BAT_P I Battery input 3.30V – 4.4V 42 VDD_CHG I Internal Battery Charger input 4.5V-6.5V 43 GND - Ground --- 44 nRST I Reset (Low Active) Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -- 0.25 VDD
21 Pin# Pin Name Type Description I/O Voltage range 45 LED1 O LED1 Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 46 LED0 O LED0 Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 47 MIC_BIAS O Microphone Bias For best regulation limit current between 0.32mA and 1.53mA 48 MIC_R_P I Microphone Right Positive Range: 0V ~ 1.5V 49 MIC_R_N I Microphone Right Negative Range: 0V ~ 1.5V 50 MIC_L_N I Microphone Left Negative Range: 0V ~ 1.5V 51 MIC_L_P I Microphone Left Positive Range: 0V ~ 1.5V 52 SPK_R_P O Speaker Right Positive Full scale swing (Differential): 750 mV rms 53 SPK_R_N O Speaker Right Negative Full scale swing (Differential): 750 mV rms 54 SPK_L_N O Speaker Left Negative Full scale swing (Differential): 750 mV rms 55 SPK_L_P O Speaker Left Positive Full scale swing (Differential): 750 mV rms 56 GND - Ground --- 57 GND - Ground --- 58 GND - Ground --- 59 GND - Ground --- 60 GND - Ground --- 61 GND - Ground ---
22 RB540HM(-a/-c) Mechanical Drawing Note: Suggested mating female connectors: 1. Through Hole: Samtec P/N. #SQT-114-01-L-S (RoHS) 2. SMT: Samtec P/N. #MMS-114-02-L-SV (RoHS)
23 RB540HM (-a/-c) Interface Signal Definitions Pin Name Type Description Voltage Range 1 NC - - - 2 KEY No Pin This Pin has been removed. Add a key to the mating connector to prevent the module from being plugged in backwards. - 3 PIO2 I High to shutdown amplifier circuit to save power consumption Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V - 0.25 VDD 4 PIO3 I High to put speaker in quiescent mode Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 5 LINEIN_DET I High indicates Audio Line thru JK1 stereo jack. Low is Bluetooth supported audio Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 6 VOL+ I High to increase volume Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 7 MUTE I Low to mute system Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 8 CALL_END I High to End Call Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 9 BAT_CHECK I Battery Check Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 10 VOL- I High to decrease volume Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 11 SPI_MOSI I SPI Signal, MOSI Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25VDD 12 SPI_CLK I SPI Signal, CLK Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 13 SPI_CS I SPI Signal, CS Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V -0.25 VDD 14 SPI_MISO O SPI Signal, MISO Voh: 0.75VDD – VDD Vol: 0 – 0.125V 15 PIO8 O Active Low, LED 4 Voh: 0.75VDD – VDD Vol: 0 – 0.125V 16 PIO4 O Active Low, LED 3 Voh: 0.7 5VDD – VDD Vol: 0 – 0.125V 17 3V3 P 3.3V VDD: 3.1V – 3.6V 18 GND - Ground 19 VBAT I Battery input pin VBAT: 3.3V – 4.4V 20 RESET I Active Low, must be low for at least 5ms Vih: 0.625 VDD – VDD + 0.3V Vil: -0.3V – 0.25 VDD 21 LED1 O Active Low, Boot up sequence indicator2 Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 22 LED0 O Active Low, Boot up sequence indicator1 Voh: 0.75 VDD – VDD Vol: 0 – 0.125V 23 MIC I Microphone Input, input impedance 6K Ohm. 4mV rms ~ 800mV rms 24 GND - GND 25 SPK_L_P O Speaker output Left Channel, Up to 2Vpk-pk differential at a load of 16 ohm. Can drive at least 8 ohm speaker directly. Full scale swing (Differential): 750 mV rms 26 SPK_L_N O Speaker output Left Channel, Up to 2Vpk-pk differential at a load of 16 ohm. Can drive at least 8 ohm speaker directly. Full scale swing (Differential): 750 mV rms 27 SPK_R_N O Speaker output Right Channel, Up to 2Vpk-pk differential at a load of 16 ohm. Can drive at least 8 ohm speaker directly. Full scale swing (Differential): 750 mV rms 28 SPK_R_P O Speaker output Right Channel, Up to 2Vpk-pk differential at a load of 16 ohm. Can drive at least 8 ohm speaker directly. Full scale swing (Differential): 750 mV rms
24 RB540MB Development Board Figure& Functional Descriptions The RB540MB Development PCB has white silkscreen legend or reference designations located by the switches and connectors described below. Switches Functional Description PSW1 Power Toggle Switch: This switch controls the power to the RB540HM module that is mounted on the RB540MB board. To remove the RB540HM, turn off PSW1. USB1 USB-B Jack Power Source: The development board is powered through this USB interface. When USB power is applied to the RB540MB Development Board, LED 102 will be ON. To turn the power on to the RB540HM, turn on the PSW1 Power Switch. MIC1A Stereo Jack Microphone input: Plug in for microphone when using for hand free phone or headset device. SPK1 Stereo output Jack: Plug in external speaker to hear audio. SW4 Pairing / Battery Check(optional) Button a. Pairing function: see each application firmware operations. b. Battery check function (optional): As soon as this button is pressed, battery power level will be indicated by amount of LED light up 1 LED ≥ 3.2V, < 3.4V 2 LEDs ≥ 3.4V, < 3.6V 3 LEDs ≥ 3.6V, < 3.8V 4 LEDs ≥ 3.8V SW3 Call Pick Up / END button SW2 Volume up button SW1 Volume down button JP1 SPI Connection: Use for uploading new firmware and debugging. BATT1 Battery Input: provide power by battery when not using USB-B input power. Do Not connect both power sources at the same time. SP-L Left Channel Speaker: directly connect to 4 ohm speaker. SP-R Right Channel Speaker: directly connect to 4 ohm speaker. LED 1 – 4 Paring and Battery LEDs. PSW1 USB1 MIC1A SPK1 JP1 BATT1 SP-L SP-R LED1 LED2 LED3 LED4
25 Operating the RB540MB for Standard RX The RB540-a/c has optional firmware for Standard HFP+A2DP Stereo RX. This firmware allows the user to establish a Bluetooth stereo connection between a RB540-a/c module and a Bluetooth capable cell phone. After a Bluetooth connection is established with the phone, the user can pick up a phone call or play music from his phone. The following will explain how to use the RB540MB switches to control the RB540-a/c module with the standard HFP+A2DP RX firmware. Connect a microphone, speaker and USB cable into RB540MB board. 1. Power ON: After turning on Power Switch PSW1, the LED 1–4 will flash once and light from LED1 – LED2 – LED3 – LED4, then LED4 – LED3 – LED2 – LED1, then all LED1–4 will flash for 2 times. If no paired before, the module will automatically start pairing and enter discoverable mode. If paired before, the module will immediately look for the previously paired device and try to reconnect. After 5 minutes, no Bluetooth Connection is established, the module will go to standby mode and the LED1 will flash every 2 seconds. 2. Initiate Pairing: When the module is in standby mode, press button SW4 for 5 seconds to initiate entering discoverable and pairing. If pressing longer than 10 seconds, the BT module will clear paired device and look up for new BT device again. During the pairing, LED1–4 will flash on and off at 0.5 second rate. Turn on BT mode in your phone, and go to search mode. You can use phone to connect RB540MB. The device name to search for RB540-a is "Std RX v21.004", and for RB540-c is “Std RX v22.004”. After paired, LED1–4 will flash 5 times and then LED1 will flash at 1second rate while LED 2-4 off. Once connected, as shown on your phone, you can start to play music to RB540MB. 3. Play Music: Plug your speakers into the SP-R and SP-L two pin headers or into the SPK1 Stereo Jack. There is no polarity. Go to your phone application and start playing music. There are 10 levels of volume up and down. SW2 is volume + and SW1 is volume -. It will have a warning sound when reaching maximum volume. Button SW2 and SW1 can be pressed step by step or continuously. You can also use phone to change speaker volume. 4. Hands Free Phone Operation (HFP): The RB540MB can also be used for hands free phone. Use button SW3 for call pick up/ end call, once you hear ring tone from speaker, plug microphone and speaker for your hand free device. Incoming call: when incoming call, the 4 LEDs will flash 8 times. It will repeat until the call is pick up, go to voicemail or disconnect. After pick up call, LED 1-4 will flash from LED1 – LED2 – LED3 – LED4, then LED4 – LED3 – LED2 – LED1 periodically. End call: After picking up the call, if press SW3 button will disconnect the call. Music resumes after call ends. Power cycle RB540MB or switch off-and-on the cell phone Bluetooth, the module will automatically connect to the cell phone.
26 Operating the RB540MB for TrueWireless Stereo Sound The RB540 has optional firmware for True Wireless Stereo sound. This firmware allows the user to establish a Bluetooth stereo connection between two RB540 Modules and a Bluetooth capable cell phone. After a Bluetooth connection is established with the phone, then establish a connection between RB540MB Master and RB540MB Slave. The user can now play music from his phone. When the RB540MB Master receives the Music from the phone, it will split the sound into two channels for stereo operation. The RB540MB Master will play one channel and the RB540MB Slave will play the other channel. The following will explain how to use the RB540MB switches to control the RB540 module with the standard TWS firmware. Connect a speaker and USB cable into both RB540MB boards. 1. Power ON: First we will create a Master RB540. Power on one of the RB540 modules by plugging in the USB cable and turn on the PSW1. 2. Initiate Pairing with cell phone: Short press SW4 button to enter the Bluetooth discovery mode, the on-board LED1 should start flashing and a periodic "du" sound can be heard from through the speaker connected to the Master RB540MB. Use the cell phone to discover and connect with the Master. The device name to search for is "TWS v11.003". The LED1 will stay lit after Bluetooth connection is established. Note: the first RB540 paired to a cell phone is a Master RB540. 3. Initiate Pairing with two RB540: Short press SW2 button on both (Master and Slave) units to start the pairing process between them. A periodic "du du" sound can be heard through both speakers and LED2 will be flashing on both units. The first time they pair might take a minute. This is due to the two Bluetooth modules synchronizing their clocks. Once the pairing process is complete, the LED2 will stay lit on both RB540MB. 4. Play Music: Use the cell phone to play music. After a short delay, you to hear the music in stereo through the two speakers. Volume control is available only on cell phone in this firmware. Note: RB540 Master is SPK_L, and RB540 Slave is SPK_R. The next time you use the phone to connect, the complete process will only take a couple of seconds. Use the cell phone to reconnect “TWS v11.003”, the modules will automatically connect to each other and the music can be played immediately. Note: Long press 3 seconds on either SW2 or SW4 will trigger a “reset” on RB540. Pairing information will be cleared in RB540. Due to different cell phone behavior, some cell phone may be able to reconnect to RB540 after a “reset” because the cell phone still keep the pairing record with RB540.
27 Operating the RB540MB for Tx/RX (two-way SCO Link) The RB540 has optional firmware for TX/RX (two-way SCO Link). This firmware allows the user to establish a Bluetooth proprietary connection between two RB540 Modules. After a Bluetooth connection is established between two RB540MB, the user can use the modules as two-way TX/RX communication. The following will explain how to use the RB540MB switches to control the RB540 module with the standard TX/RX (two-way SCO Link) firmware. Connect a microphone, speaker and USB cable into both RB540MB boards. 1. Power ON RX: Plug your speakers into the SP-R and SP-L two pin headers or into the SPK1 Stereo Jack. There is no polarity. Turn on the PSW1 on the RB540 RX module. All 4 LEDs will flash once, then LED 1–4 will flash from LED1 – LED2– LED3 – LED4, then LED4– LED3 – LED2 – LED1. All 4 LEDs will flash at 1second rate. At this moment, the BT module enters discoverable mode and starts pairing. 2. Power ON TX: Plug your speakers into the SPK1 Stereo Jack. Turn on the PSW1 on the RB540 TX module. LED1-2 will quick flash alternately, LED3 stays lit. 3. Initiate Pairing: Press TX SW4 to start discovery and pairing. LED2 will quick flash, LED3 remains lit. Wait until RX LED1 is on, press TX SW3 to connect to RX. After connected, RX LED1 will flash at 1second rate. TX LED2 will flash 2 times a second, LED3 stays lit. Two-way communication is available on TX and RX. Both TX and RX can speak and listen to each other synchronously. Power cycle RB540MB TX or RX, need to repeat #3 Initiate Pairing process to establish the connection. There is no auto-reconnection supported in this firmware revision. Note: If RX has paired to another host device (ex. smart phone), please make sure you clear the previous pairing record before reconnecting to TX. Long press RX SW4 for 12 seconds to clear the previous pairing record.
28 Operating the RB540MB for Tx/RX (one-way A2DP) The RB540 has optional firmware for TX/RX (one-way A2DP). This firmware allows the user to establish a Bluetooth proprietary connection between two RB540 Modules. After a Bluetooth connection is established between two RB540MB, the user can use the modules as one-way TX/RX communication. The following will explain how to use the RB540MB switches to control the RB540 module with the standard TX/RX (one-way A2DP) firmware. Connect an USB cable into both RB540MB boards. 1. Power ON RX: Plug your speakers into the SPK1 Stereo Jack. Turn on the PSW1 on RB540MB RX. A “du-du-du” sound will play for power on indication. LED1-2 will flash alternately, LED4 stays lit. RB540 RX will automatically enter discoverable mode at all times. 2. Power ON TX and initiate Pairing: Plug the microphone into MIC1A. Turn on the PSW1 on RB540MB TX. LED1-2 will flash alternately, LED4 stays lit. In first 10 seconds, RB540 TX will try to connect to last paired RX, the reconnection will be established in couple seconds. If no reconnection established in 10 seconds, RB540 TX will automatically enter pairing mode to search a new RX. After paired, a “du-du” sound will play in RX, and LED1, LED4 will lit on both TX and RX RB540MB boards. Note: Suggested always to power on RX first, in order to shorten TX pairing time. 3. Now you can use TX as talking or music source, and hear the sound from RX. 4. Volume change on TX: There are 21 levels of volume up and down on TX. SW2 is volume + and SW1 is volume -. Button SW2 and SW1 can be pressed step by step or continuously. Note: Volume change function not supported in RX. 5. Clear Pairing Record: Long press TX SW4 for 10 seconds to clear the previous pairing record. Note: 1. Power cycle RB540MB RX, the module will automatically enter discoverable mode for any available TX in the range. 2. Power cycle RB540MB TX, the module will first try to connect to last paired RX for 10 seconds, if no connection established in 10 seconds, TX will automatically enter pairing mode for searching a new RX. 3. No pairing button needed in this firmware revision, all pairing connection will be automatically handled in couple seconds.
29 Upgrading the Firmware in the RB540 series Use JP1 connector on the RB540MB with the SPI cable and Bluesuite software to upgrade the firmware. Radicom will provide the Bluesuite software and SPI cable for the firmware upgrade. To upload new firmware to the RB540 series module or RB540HM, use the SPI pins and follow the procedure below. 1. The following 3 items are required to update firmware: a. Windows XP or Windows 7 machine with printer port b. SPI cable c. Bluesuite 2.4.8 Software 2. Install Bluesuite 2.4.8 in the computer. 3. Connect SPI cable 25pin connector to the computer printer port. Connect the 5pin connector to JP1 5pin header on the RB540MB. Make sure the polarity of 5pin header is correctly inserted into JP1 on the RB540. The white mark on the 5pin connector of the SPI cable is pin 1. The pin 1of the JP1 connector can be identified by the pin closest to the JP1 Silkscreen or by the square pad on the bottom side of the PCB. 4. Turn on the Power Switch on the RB540MB. 5. In Windows XP machine, Start > All Program > CSR BlueSuite 2.4.8 > Blueflash. 6. Click “Stop processor”, then browse and choose the new firmware file. 7. Click “Download file” to update firmware. 8. After download, click “start processor”. SPI Programming Connector (JP1) RB540 SPI programming connector RB540 pin20 RB540 pin21 RB540 pin22 RB540 pin23 JP1
30 Suggested Microphone Circuit Suggested Differential to Single End Circuit Suggested LED Circuit
31 Limited Warranty Warranty Coverage and Duration Radicom Research, Inc. (“RRI”) warrants to the original purchaser its RRI-manufactured products (“Product”) against defects in material and workmanship under normal use and service for a period of one year from the date of delivery. During the applicable warranty period, at no charge, RRI will, at its option, either repair, replace or refund the purchase price of this Product, provided it is returned in accordance with the terms of this warranty to RRI. Repair, at the option of RRI, may include the replacement of parts, boards or other components with functionally equivalent reconditioned or new parts, boards or other components. Replaced parts, boards or other components are warranted for the balance of the original applicable warranty period. All replaced items shall become the property of RRI. RRI MAKES NO GUARANTEE OR WARRANTY THAT THE PRODUCT WILL PREVENT OCCURRENCES, OR THE CONSEQUENCES THEREOF, WHICH THE PRODUCT IS DESIGNED TO DETECT. This expressed limited warranty is extended by RRI to the original end-user purchaser only, and is not assignable or transferable to any other party. This is the complete warranty for the Product manufactured by RRI, and RRI assumes no obligation or liability for additions or modifications to this warranty. In no case does RRI warrant the installation, maintenance or service of the Product. RRI is not responsible in any way for any ancillary equipment not furnished by RRI that is attached to or used in connection with the Product, or for operation of the Product with any ancillary equipment, and all such equipment is expressly excluded from this warranty. Because of wide variations in topographical and atmospheric conditions, which may require availability of repeater stations or of particular radio frequencies, RRI assumes no liability for range, coverage or suitability of the Product for any particular application. Buyer acknowledges that RRI does not know a particular purpose for which buyer wants the product, and that buyer is not relying on RRI’s skill and judgment to select or furnish suitable goods. What this Warranty does NOT Cover: (a) Defects or damage resulting from use of the Product in other than its normal and customary manner. (b) Defects or damage from misuse, accident or neglect. (c) Defects of damage from improper testing, operation, maintenance, installation, alteration, modification or adjustment. (d) Disassembly or repair of the Product in such a manner as to adversely affect performance or prevent adequate inspection and testing to verify any warranty claim. (e) Any Product that has had its serial number or date code removed or made illegible.
32 How to Receive Warranty Service: To obtain warranty service, contact RRI by phone +886-2-2664-9168 for your sales representative or email to sales@radi.com for an RMA (Return Merchandise Authorization) number. Deliver or send the Product, transportation and insurance prepaid to RRI, with the RMA number clearly marked on the outside of the package. General Provision This warranty sets forth the full extent of RRI’s responsibilities regarding the Product. Repair, replacement or refund of the purchase price, at RRI’s option, is the exclusive remedy. THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER EXPRESSED WARRANTIES. ANY APPLICABLE IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, ARE LIMITED TO THE DURATION OF THIS LIMITED WARRANTY. TO THE FULLEST EXTENT PERMITTED BY LAW, RRI DISCLAIMS ANY LIABILITY FOR DAMAGES IN EXCESS OF THE PURCHASE PRICE OF THE PRODUCT, FOR ANY LOSS OF USE, LOSS OF TIME, INCONVENIENCE, COMMERCIAL LOSS, LOST PROFITS OR SAVING OR OTHER INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE OR FAILURE OF SUCH PRODUCT.
33 Contacting Radicom Research, Inc. If more information or technical support is needed, please contact us: 2148 Bering Drive San Jose, CA. 95131 Telephone: (408) 383 9006 Fax: (408) 383 9007 or e-mail: sales@radi.com http://www.radi.com/

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