RN-52-EK-1

RN52 Bluetooth® Audio Evaluation Kit User’s Guide  2014 Microchip Technology Inc. DS50002153A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 978-1-63276-021-0 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == DS50002153A-page 2 Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.  2014 Microchip Technology Inc. RN52 Bluetooth Audio Evaluation Kit User’s Guide Object of Declaration: RN52 Bluetooth Audio Evaluation Kit  2014 Microchip Technology Inc. DS50002153A-page 3 RN52 Bluetooth Audio Evaluation Kit User’s Guide NOTES:  2014 Microchip Technology Inc. DS50002153A-page 4 RN52 BLUETOOTH AUDIO EVALUATION KIT USER’S GUIDE Table of Contents Preface ........................................................................................................................... 7 Chapter 1. Overview 1.1 Introduction ................................................................................................... 13 1.2 RN52 Evaluation Kit Features ...................................................................... 13 1.3 RN52 Evaluation Kit Contents and Part Details ........................................... 14 1.4 RN-52-EK Evaluation Board ......................................................................... 15 1.5 RN52 Evaluation Kit Related Information Contents ..................................... 17 Chapter 2. Getting Started 2.1 Introduction ................................................................................................... 19 2.2 Hardware Requirements .............................................................................. 19 2.3 Power Up the Board ..................................................................................... 20 2.4 Using the Evaluation Kit ............................................................................... 20 Chapter 3. Application Demonstrations 3.1 Audio Demonstration .................................................................................... 27 3.2 HSP/HFP Demonstration ............................................................................. 28 Appendix A. RN52 Audio Evaluation Kits Schematics A.1 Introduction .................................................................................................. 29 A.2 RN52 Evaluation Kits Schematic ................................................................. 29 A.3 RN52 Evaluation Kits PCB Layout and Assemble Drawings ....................... 31 A.4 RN52 Evaluation Kits Bill of Materials .......................................................... 34 A.5 RN52 Evaluation Kits Physical Dimensions ................................................. 35 Worldwide Sales and Service .................................................................................... 37  2014 Microchip Technology Inc. DS50002153A-page 5 RN52 Bluetooth Audio Evaluation Kit User’s Guide NOTES: DS50002153A-page 6  2014 Microchip Technology Inc. RN52 BLUETOOTH AUDIO EVALUATION KIT USER’S GUIDE Preface NOTICE TO CUSTOMERS All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/ or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available. Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the document. For the most up-to-date information on development tools, see the MPLAB® IDE on-line help. Select the Help menu, and then Topics to open a list of available on-line help files. INTRODUCTION This chapter contains general information that will be useful to know before using the Product Name. Items discussed in this chapter include: • • • • • • • • Document Layout Conventions Used in this Guide Warranty Registration Recommended Reading The Microchip Web Site Development Systems Customer Change Notification Service Customer Support Document Revision History DOCUMENT LAYOUT This user’s guide describes how to use the RN52 Bluetooth Audio Evaluation Kit. The document is organized as follows: • Chapter 1. “Overview” – This chapter introduces the RN52 Bluetooth Audio Evaluation Kit and provides an overview of various features. • Chapter 2. “Getting Started” – This chapter describes the hardware components and setup of the RN52 Bluetooth Audio Evaluation Kit. • Chapter 3. “Application Demonstrations” – This chapter describes the application demonstrations of the RN52 Bluetooth Audio Evaluation Kit. • Appendix A. “RN52 Audio Evaluation Kits Schematics” – This appendix includes a schematic of the RN-52-EK Evaluation Board, and the Bill of Materials.  2014 Microchip Technology Inc. DS50002153A-page 7 RN52 Bluetooth Audio Evaluation Kit User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Represents Examples Arial font: MPLAB® IDE User’s Guide Italic characters Referenced books Emphasized text ...is the only compiler... Initial caps A window the Output window A dialog the Settings dialog A menu selection select Enable Programmer Quotes A field name in a window or dialog “Save project before build” Underlined, italic text with right angle bracket A menu path File>Save Bold characters A dialog button Click OK A tab Click the Power tab N‘Rnnnn A number in verilog format, 4‘b0010, 2‘hF1 where N is the total number of digits, R is the radix and n is a digit Text in angle brackets < > A key on the keyboard Press , Sample source code #define START Filenames autoexec.bat File paths c:\mcc18\h Keywords _asm, _endasm, static Command-line options -Opa+, -Opa- Bit values 0, 1 Courier New font: Plain Courier New DS50002153A-page 8 Constants 0xFF, ‘A’ Italic Courier New A variable argument file.o, where file can be any valid filename Square brackets [ ] Optional arguments mcc18 [options] file [options] Curly brackets and pipe character: { | } Choice of mutually exclusive arguments; an OR selection errorlevel {0|1} Ellipses... Replaces repeated text var_name [, var_name...] Represents code supplied by user void main (void) { ... }  2014 Microchip Technology Inc. Preface WARRANTY REGISTRATION Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip web site. RECOMMENDED READING This user’s guide describes how to use the RN-52-EK Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources: RN52 Bluetooth Audio Module Data Sheet (DS70005120) PICDEM™ PIC18 Explorer Demonstration Board User’s Guide (DS51721) Explorer 16 Development Board User’s Guide (DS51589) Bluetooth Audio Module Command Reference User’s Guide (DS50002154) For more information, refer to the following sources: • RN52/RN52N Class 2 Bluetooth Module Data Sheet • Bluetooth Command Reference and Advanced Information User’s Guide  2014 Microchip Technology Inc. DS50002153A-page 9 RN52 Bluetooth Audio Evaluation Kit User’s Guide THE MICROCHIP WEB SITE Microchip provides online support via our web site at http://www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: • Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software • General Technical Support – Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip consultant program member listing • Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at http://www.microchip.com, click on Customer Change Notification and follow the registration instructions. The Development Systems product group categories are: • Compilers – The latest information on Microchip C compilers and other language tools. These include the MPLAB® C compiler; MPASM™ and MPLAB 16-bit assemblers; MPLINK™ and MPLAB 16-bit object linkers; and MPLIB™ and MPLAB 16-bit object librarians. • Emulators – The latest information on the Microchip MPLAB REAL ICE™ in-circuit emulator. • In-Circuit Debuggers – The latest information on the Microchip in-circuit debugger, MPLAB ICD 3. • MPLAB IDE – The latest information on Microchip MPLAB IDE, the Windows® Integrated Development Environment for development systems tools. This list is focused on the MPLAB IDE, MPLAB SIM simulator, MPLAB IDE Project Manager and general editing and debugging features. • Programmers – The latest information on Microchip programmers. These include the MPLAB PM3 device programmer and the PICkit™ 3 development programmers. DS50002153A-page 10  2014 Microchip Technology Inc. Preface CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • • • • Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Customers should contact their distributor, representative or Field Application Engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com DOCUMENT REVISION HISTORY Revision A (March 2014) This is the initial released version of this document.  2014 Microchip Technology Inc. DS50002153A-page 11 RN52 Bluetooth Audio Evaluation Kit User’s Guide NOTES: DS50002153A-page 12  2014 Microchip Technology Inc. RN52 BLUETOOTH AUDIO EVALUATION KIT USER’S GUIDE Chapter 1. Overview 1.1 INTRODUCTION This user’s guide describes the hardware and software setup for the RN52 Bluetooth® Audio Evaluation Kit. This kit contains the hardware needed to evaluate the RN52 Bluetooth audio module. The RN52 module is mounted to an evaluation board that demonstrates the module’s key features. The evaluation board contains: • • • • • • Dual-channel audio output and input Easy access to GPIO pins Built-in amplifier for stereo audio output 6 push buttons to control audio playback Status LEDs Connections for the programmer and UART interfaces The RN52 supports the following Bluetooth profiles: • A2DP stereo audio (Sink mode with support for Sub-Band Coding (SBC), Advanced Audio Coding (AAC) and aptX® codecs • AVRCP media player remote control • HFP/HSP for accepting a phone call with 3-way calling and caller-ID support • Support for Clear Voice Capture® (cVc) voice enhancement through HFP/HSP • SPP (allows the module to receive serial data over the UART) • iAP profile discovery for iOS devices The evaluation kit can be used to configure and program the Bluetooth module using the command interface, create connections, and transfer data. The command interface is made up of simple ASCII commands. For more details, refer to the “RN52 Bluetooth Audio Module Data Sheet”, “Bluetooth Audio Module Command Reference User’s Guide”, and “Bluetooth Command Reference and Advanced Information User’s Guide”. For data sheet and other details related to RN52 module, refer to the Microchip web site at http://www.microchip.com. This chapter discusses the following topics: • • • • 1.2 RN52 Evaluation Kit Features RN52 Evaluation Kit Contents and Part Details RN-52-EK Evaluation Board RN52 Evaluation Kit Related Information Contents RN52 EVALUATION KIT FEATURES 1.2.1 RN52 Evaluation Board Features The RN52 Evaluation Board has the following features: • Fully qualified Bluetooth version 3.0 module, fully compatible with Bluetooth version 2.1 + Enhanced Data Rate (EDR), 1.2, and 1.1 • Backwards-compatibility with Bluetooth version 2.0, 1.2, and 1.1 • Software configurable through commands over UART console interface  2014 Microchip Technology Inc. DS50002153A-page 13 RN52 Bluetooth Audio Evaluation Kit User’s Guide • Dedicated GPIO pins enable MCUs to access control and status functions efficiently • Embedded RN-52 module with postage-stamp size form factor of 13.5 x 26.0 x 2.7 mm • Embedded Bluetooth stack profiles: A2DP, AVRCP, HFP/HSP, and SPP • Dual-channel, differential audio input and output for highest quality audio • Supports iAP profile to discover iOS devices and apps (requires a special firmware build) • Integrated amplifier for driving 16 Ω speakers • UART (SPP) data connection interfaces • External audio CODECs supported via S/PDIF and I2S interface • Castellated SMT pads for easy and reliable PCB mounting • Environmentally friendly, RoHS compliant • Certifications: FCC, IC, and CE • Bluetooth SIG certified 1.3 RN52 EVALUATION KIT CONTENTS AND PART DETAILS The evaluation kit includes the hardware required to connect the evaluation board to the host computer. See Table 1-1. To evaluate the module on the evaluation board, the user needs a computer with a USB port running the Microsoft Windows or Mac OS-X operating system. Note: Prior to the evaluation, install the FTDI driver for the USB cable. If the drivers are not automatically installed, download and install the FTDI drivers from the Microchip web site at http://ww1.microchip.com/downloads/en/DeviceDoc/FTDI-Drivers.zip for FTDI Chipset Drivers. Depending on the development kit ordered, the package contains the following: • RN-52-EK Board - Contains the Bluetooth module and connectors. Supports Standard application firmware (A2DP/AVRCP/SPP) master and slave • Mini-USB cable - Links user’s computer to the evaluation board • Stereo mini-speakers - Rechargeable battery-powered speakers Table 1-1 lists the part number of RN-52-EK Evaluation Kit. TABLE 1-1: RN52 EVALUATION KIT PART DETAILS Description RN52 Evaluation board DS50002153A-page 14 Part Number RN-52-EK Mini-USB cable — Duo Rechargeable Mini-Speaker Set (includes Universal 3.5mm Audio Plug and USB cable) — Hands Free Clip on Mini Lapel Microphone —  2014 Microchip Technology Inc. Overview Figure 1-1 illustrates the RN-52-EK evaluation kit contents. FIGURE 1-1: EVALUATION KIT CONTENTS RN-52-EK RN52 Evaluation board USB cable Stereo mini-speakers 1.4 RN-52-EK EVALUATION BOARD RN52 Audio Evaluation Board contains the following components as shown in Figure 1-2 which describes the evaluation board’s interfaces and connectors. Table 1-2 describes the various components of the evaluation board.  2014 Microchip Technology Inc. DS50002153A-page 15 RN52 Bluetooth Audio Evaluation Kit User’s Guide FIGURE 1-2: RN-52-EK EVALUATION BOARD RN-52 Module Differential Audio In/Out (J7) Status LEDs Volume Up Previous Track Pause/Play GPIO Connector (J10) USB to Module (HCI Mode) Next Track USB to UART (SPP & Command Mode) Volume Down Dual Channel Audio Inputs EXT Connector - CMD Mode, Event, I2S, S/PDIF (J3) Audio In 3.5 mm Stereo Jack Power On Audio Out 3.5 mm Stereo Jack EXT Connector - CMD Mode, Event, I2S, S/PDIF (J3) Differential Audio In/Out (J7) 2 4 6 8 10 12 14 16 2 4 6 8 10 1 3 5 7 9 11 13 15 1 3 5 7 9 GPIO Connector (J10) 1 2 3 4 5 6 7 8 9 10 11 12 Pin Description Pin Description Pin Description 1 UART_TX 1 SPKR_R- 1 GND 2 VBUS 2 MIC_L+ 2 GPIO2 3 UART_RX 3 SPKR_L- 3 GPIO4 4 AIO0 4 MIC_R+ 4 BTN_VOLUP 5 GPIO9 5 SPKR_R+ 5 BTN_NEXT 6 GND 6 MIC_L- 6 BTN_PLAY 7 GND 7 SPKR_L+ 7 BTN_PREVIOUS 8 I2S_IN 8 MIC_R- 8 BTN_VOLDOWN 9 GND 9 GND 9 GPIO7 10 I2S_OUT 10 MIC_BIAS 10 GPIO6 11 GND MIC Right (J6) 11 PWREN 12 I2S_SYNC 1 2 12 13 GND 14 I2S_CLK Pin Description 15 GND 1 MIC_R 16 3.3 V 2 GND DS50002153A-page 16 3.3 V MIC Left (J8) 1 2 Pin Description 1 MIC_L 2 GND  2014 Microchip Technology Inc. Overview TABLE 1-2: RN52 AUDIO EVALUATION KIT HARDWARE Hardware Component Description ® RN-52 Bluetooth v3.0 module USB to UART (UART) USB to UART serial bridge for command and SPP modes USB to Module (RSVD) USB interface to RN-52 module for DFU, HCI, and other modes Power On Switch to turn on the RN-52 module. Power to the RN-52-EK is provided through USB to UART serial bridge. Audio Out Audio 3.5 mm jack for audio playback Audio In Audio 3.5 mm jack for microphone input Status LEDs Red and Blue LEDs show the pairing/connection status Play/Pause Button Button to play or pause the audio playback Previous Track Button Button to skip track backwards Next Track Button Button to skip track forwards Volume Up Button Button to increase volume Volume Down Button Button to decrease volume J3 Connection Header Provides access to GPIOs, UART, and I2S. Controls switch to command mode over GPIO9. J7 Connection Header Provides access to analogue audio interface J10 Connection Header Provides access to GPIOs used for player control buttons, power enable pin and other GPIOs J6 Connection Header Provides access to microphone-right input J8 Connection Header Provides access to microphone-left input 1.5 RN52 EVALUATION KIT RELATED INFORMATION CONTENTS For more details on software and other documentation, refer to the Microchip web site at http://www.microchip.com/RN-52-EK. Note:  2014 Microchip Technology Inc. All the factory-shipped RN modules are available with firmware version and profile details. For more information on RN module links, refer to “Bluetooth Audio Module Command Reference User’s Guide and Bluetooth Command Reference and Advanced Information User’s Guide” from the Microchip web site http://www.microchip.com. DS50002153A-page 17 RN52 Bluetooth Audio Evaluation Kit User’s Guide NOTES: DS50002153A-page 18  2014 Microchip Technology Inc. RN52 BLUETOOTH AUDIO EVALUATION KIT USER’S GUIDE Chapter 2. Getting Started 2.1 INTRODUCTION This chapter describes how the RN52 Audio Evaluation Kit board works using the ASCII command set. Certain hardware and software/utilities are essential to support the evaluation/development of demo applications. This chapter discussess the following topics: • Hardware Requirements • Software/Utility Requirements • Module Configuration 2.2 HARDWARE REQUIREMENTS Along with an USB cable RN-52-EK boards are required for evaluation hardware setup and to run the firmware/demo appplications. 2.2.1 Hardware Setup To setup the evaluation hardware, perform the following steps: 1. Connect the mini-USB cable to your computer’s USB port and to the evaluation board’s UART (USB-UART bridge) connector. This connection provides power to the board, and provides a virtual serial data port connection to the command console and in SPP mode. 2. Prior to the evaluation, install the FTDI driver for the USB cable. Note: If the drivers are not automatically installed, download and install the FTDI drivers from the Microchip web site at http://ww1.microchip.com/downloads/en/DeviceDoc/FTDI-Drivers.zip for FTDI Chipset Drivers. 3. Note down the assigned computer COM port to which the RN-52-EK is attached through the cable connected. 4. Connect the portable mini-speaker 3.5 mm to the stereo audio out connector (J9). Figure 2-1 shows the completed hardware setup for the evaluation board.  2014 Microchip Technology Inc. DS50002153A-page 19 RN52 Bluetooth Audio Evaluation Kit User’s Guide FIGURE 2-1: 2.3 CONNECTED HARDWARE SETUP POWER UP THE BOARD To power-up the board, connect the board to a power source via USB, and then press and hold the evaluation board’s power-on button until the speakers issue a two-tone alert. The RN52 evaluation board’s status LEDs give user a visual confirmation that the board is powered up and operating. See Table 2-1. TABLE 2-1: RN52 AUDIO EVALUATION BOARD STATUS LEDS LED 2.4 Status Description Blue and red Flashing The RN52 module is discoverable Blue only Flashing The module is connectable Red only Flashing The module is connected USING THE EVALUATION KIT This section of the user’s guide assumes that users have a basic working knowledge of Bluetooth operation and communications. To configure the Bluetooth devices, a Bluetooth-enabled PC (either built-in or using a USB Bluetooth dongle) is required. Only one device can be configured at a time. Once programmed and configured, device settings are saved (independent of power down) until they are explicitly changed or the factory defaults are restored. The RN52 uses simple ASCII commands sent over UART interface to: set commands to configure the Bluetooth module and get commands to echo the current configuration. Configuration settings modified with the set command do not take effect until the module has been rebooted, even though the get command may show otherwise. Note: DS50002153A-page 20 For detailed information on the ASCII comands used to configure the Bluetooth module, refer to the “Bluetooth Command Reference and Advanced Information User’s Guide”.  2014 Microchip Technology Inc. Getting Started 2.4.1 Command Mode vs. Data Mode The Bluetooth device operates in two modes: Data mode (default) and Command mode. While in Data mode, the module is essentially a data pipe. When the module receives data from SPP Bluetooth connections, it strips the Bluetooth headers and trailers and passes the user data to the UART Receive (RX) line. When data is written to the UART Transmit (TX) line, the module constructs the Bluetooth packet and sends it out over to the Bluetooth SPP. Thus, the entire process of sending/receiving data to the host is transparent to the end microprocessor. Figure 2-2 illustrates the Bluetooth communication pipe. FIGURE 2-2: DATA & COMMAND MODES The default configuration for the Bluetooth device is: • • • • • Bluetooth Slave mode Keyboard Default Authentication mode (no pin code required) Serial port 115,200 Kbps baud rate, 8 bits, no parity, one stop bit Serial port flow control enabled Low-Power mode off The device can be configured by putting it into Command mode and sending ASCII commands over a serial port. Once the configuration parameters are changed, the parameters persist until it is changed. Otherwise, a Factory Reset is performed. Note: User can only configure the Bluetooth audio module locally using host computer’s serial port. The module cannot be configured remotely over the Bluetooth link. Terminal emulator application/program on PC is required to complete the setup. Note:  2014 Microchip Technology Inc. Depending on the operating system, the users can opt to use either the TeraTerm (Windows OS) or CoolTerm (Mac OS-X) terminal emulator programs. DS50002153A-page 21 RN52 Bluetooth Audio Evaluation Kit User’s Guide 2.4.2 Configure the Module Using the UART Setup the RN-52-EK hardware as described in Section 2.2.1 “Hardware Setup”. With the Bluetooth device connected and powered on, run a terminal emulator and open the COM port to which the RN-52-EK link cable is connected. Configure the virtual COM port connected to the RN-52-EK USB interface with the default settings (115,200 Kbps baud, no parity, 8 bits, 1 stop bit).The terminal emulator’s communication settings should be the default serial port settings. Command mode can be switched through the UART interface via the USB connector at any time when the device does NOT have a Bluetooth connection, as well as under certain conditions. If the device is in configuration mode and a connection occurs, the device exits configuration mode and data passes back and forth from the remote device. Note: 2.4.3 Local configuration can be used at any time when the device does NOT have a Bluetooth connection, as well as under certain conditions. If the device is in Configuration mode and a connection occurs, the device exits Configuration mode and data passes back and forth from the remote device. Enter Command Mode The RN52 module enters Command mode when GPIO09 goes low. The RN52 module leaves command mode and enters data mode when GPIO09 goes high. With the RN-52-EK evaluation board, use a jumper to switch between command and data modes. Launch a terminal emulator and specify the adapter’s default settings. Figure 2-3 shows the serial port settings dialog box for TeraTerm (open this dialog box by choosing Setup > Serial Port). FIGURE 2-3: SERIAL PORT SETTINGS IN TERATERM To place the module on the RN-52-EK evaluation board into Command mode, connect a jumper to header pins 5 (GPIO9) and 6 (GND) on J3. Refer to Figure 2-4 and its Connector-Pin details. After entering Command mode, the module sends CMD to the UART as acknowledgement. DS50002153A-page 22  2014 Microchip Technology Inc. Getting Started FIGURE 2-4: GPIO9 LOCATION GPIO9 Type the following commands into the Tera Term console: + // Turn on local echo v // Display the firmware version d // Display the current settings q // Show the connection status To switch into Data mode, remove the jumper from header pins 5 (GPIO9) and 6 (GND) on J3. When leaving Command mode, the module sends END to the UART. Figure 2-5 shows the Tera Term console after performing these actions. FIGURE 2-5:  2014 Microchip Technology Inc. COMMAND MODE ACTIONS IN A SERIALTERMINAL EMULATOR DS50002153A-page 23 RN52 Bluetooth Audio Evaluation Kit User’s Guide 2.4.4 Making a Bluetooth Connection By default, the Bluetooth adapter acts as a slave and the PC is the master. Connect to the Bluetooth adapter using the computer’s Bluetooth device manager, which varies depending on the operating system. Regardless of the operating system, the process is the same: Discovery, Pairing, and Connecting. 2.4.4.1 DISCOVERY When the RN-52-EK is turned on, the Blue and Red LED should blink and the adapter should be discoverable. Open the host PC’s Bluetooth device manager and choose to add a new device. The Bluetooth device manager’s icon is located at the bottom right corner on the host’s computer screen in the taskbar for Windows; and at the upper right corner for Mac OS-X. The Bluetooth device manager displays a list of discoverable Bluetooth devices. The board displays as RN52-XXXX, where XXXX is the last 4-digits of the module’s MAC address. 2.4.4.2 PAIRING The module supports the following pairing methods: • Legacy Pairing using PIN code • Secure Simple Pairing (SSP) - Just Works - Numeric Comparison using Yes/No Keyboard IO The RN-52 module can be configured through command console to use either of the above pairing methods. To pair with the module, double click its name in the Bluetooth device scan list. The default authentication mode is Just Works which requires no user interaction. The link key is generated, stored and a connection gets established. For subsequent connections, the stored link keys are compared and the connection is established. The module’s firmware automatically stores up to 8 pairings from remote hosts in a first in, first out fashion. If the remote Bluetooth device does not require authentication, a connection can occur without the pairing process. However, the Bluetooth specification requires that if either device involved in the pairing process requires authentication, the other device must participate to ensure a secure link. Microchip modules default to Just Works mode and do not require authentication. In numeric comparison using yes/no keyboard IO mode, the user is shown a 6-digit number on both the module console and the pairing device display. The user has to verify that the numbers match or do not match on both devices by entering yes or no. A command is provided to enter yes or no on the module command console. In legacy pairing mode, the pairing device requests a 4-digit fixed PIN for authentication. In this case, use the module’s default PIN code, 1234, as the pass key. After entering the PIN code, the Bluetooth devices are compared. If a match is found, a link key is generated and stored. Usually, but not always, the remote device stores the link key. For subsequent connections, the devices compare link keys. If correct, there is no need to re-enter the PIN code. The PIN code can be set as desired using command console. To remove the stored link key on the remote device, you typically “unpair” or remove the device from the Bluetooth manager. The pairing information can be reset by executing the reset Paired Device List (PDL) on the command console. You can change the PIN code to remove the link key on the Bluetooth adapter, forcing a new pin code exchange to occur upon subsequent connection attempts. DS50002153A-page 24  2014 Microchip Technology Inc. Getting Started Figure 2-6 shows examples of Bluetooth devices discovered list and pair/connect interfaces. Note: For detailed information on the pairing mode commands, refer to the “Bluetooth Command Reference and Advanced Information User’s Guide”. FIGURE 2-6: 2.4.4.3 PAIRING/CONNECTING WITH THE BLUETOOTH® ADAPTER CONNECTING If the pairing with the device is successful, the module can connect to the device. Click connect using the pair/connect interface to establish a connection. Once connected, the module enables Advanced Audio Distribution Profile (A2DP) for audio playback and Audio Video Remote Control Profile (AVRCP) for player control. Additionally, a Serial Port Profile (SPP) link can be established by opening the virtual COM port available on the RN52 module from a PC over its Bluetooth device. When connecting to a PC using SPP, after the Bluetooth device manager completes pairing/connecting, it issues a message that the Bluetooth device is installed on COM port X where the specific COM port is unique to the user’s computer. After connecting successfully, the data can be transmitted and received on the Bluetooth COM port link in Data mode. In some cases, the Bluetooth device manager creates two COM ports. In this situation, use the incoming port to wait for the module to initiate a connection. Open the outgoing port to establish a connection to the module.  2014 Microchip Technology Inc. DS50002153A-page 25 RN52 Bluetooth Audio Evaluation Kit User’s Guide NOTES: DS50002153A-page 26  2014 Microchip Technology Inc. RN52 BLUETOOTH AUDIO EVALUATION KIT USER’S GUIDE Chapter 3. Application Demonstrations 3.1 AUDIO DEMONSTRATION In this demonstration, user can play an audio stream on the RN-52-EK using a computer or smartphone. The evaluation board broadcasts the audio through the mini-speakers. The following are the steps to perform the demonstration: 1. Connect the RN-52-EK to a host device (PC or smartphone) that has an audio source. 2. Connect a pair of headphones or self-powered speakers to the RN-52-EK board’s audio out connector (J9). 3. Open the audio source on the host device. Microchip recommends using a media player (e.g., Microsoft Media Player, iTunes, and Android). 4. Start the audio stream on the media player. When the RN-52-EK is connected to an audio source compatible with Bluetooth AVRCP, the audio control buttons are used to: • • • • Control the volume output Go to the previous track Go to the next track Start/stop playing the current track Figure 3-1 shows the location of the audio control buttons. FIGURE 3-1: AUDIO CONTROL BUTTONS Volume Up Previous Track Pause/Play Next Track Volume Down The RN-52 module supports SBC codec, AAC and aptX optional codecs for audio playback using A2DP profile. The optional codec is negotiated during connection if supported on the connecting device. If optional codecs are not supported, the RN-52  2014 Microchip Technology Inc. DS50002153A-page 27 RN52 Bluetooth Audio Evaluation Kit User’s Guide defaults to the mandatory SBC codec. The optional codecs can be enabled or disabled using the Command mode. For more information on the audio codecs, refer to the “RN52 Bluetooth Audio Module Data Sheet”. 3.2 HSP/HFP DEMONSTRATION In this demonstration, the RN52EK user can explore the hands-free profile setting to receive an incoming voice call from a paired smartphone. This demonstration requires a microphone. It would be good to use a PC headset/microphone (with two-plugs). The following are the steps to perform the demonstration: 1. Connect the RN-52-EK via a USB cable to a PC that has a terminal emulator. 2. Connect the headset/microphone to the RN-52-EK board’s audio out connector (J9) and audio in (J5) respectively. 3. From the phone’s Bluetooth control panel, pair and connect the RN-52-EK to a smartphone that supports the A2DP and HFP/HSP Bluetooth profiles. 4. On host PC, identify the virtual serial port connection to the RN-52-EK UART USB port. 5. In a terminal emulator, open this port with the settings: 115,200 Kbps baud rate, 8 bits, no parity, one stop bit. 6. Connect a jumper to header pins 5 and 6 (GPIO9) on J3. Refer back to Figure 2-4. The terminal emulator displays CMD, indicating that the RN52 module is in command mode and the user can connect to it via the UART. 7. Try the following commands: D—Display settings H—Help Q—Connection status (a non-zero value indicates the device is connected) From CMD mode in the terminal emulator, enter the “Q” command to retrieve connection status. The second byte should indicate state “03” (connected). 8. From another phone, initiate a call to the smartphone that is paired with the RN-52-EK. The A2DP stream pauses and the ringtone plays on the headset/microphone. 9. The music pauses on the smartphone and the ringtone plays. 10. From CMD mode in the terminal emulator, enter the “Q” command to retrieve connection status. The second byte should indicate state “05” (incoming call). 11. From CMD mode in the terminal emulator, enter the “C” command to accept the incoming call. 12. From CMD mode in the terminal emulator, enter the “Q” command to retrieve connection status. The second byte should indicate state “06” (active call). 13. End the call from smartphone. The call can also be dropped using the “E” command from CMD mode. 14. Issue “Q” command in CMD mode, the second byte must state “0C” to indicate A2DP music stream is playing. 15. Follow the instructions on Section 3.1 “Audio Demonstration” and initiate an A2DP audio stream. The RN-52 module supports cVc voice enhancement. It includes echo cancellation, noise suppression, and optional automatic gain control algorithms. The cVc voice enhancement can be enabled or disabled using the Command mode. For more information on cVc, refer to the “RN52 Bluetooth Audio Module Data Sheet”. DS50002153A-page 28  2014 Microchip Technology Inc. RN52 BLUETOOTH AUDIO EVALUATION KIT USER’S GUIDE Appendix A. RN52 Audio Evaluation Kits Schematics A.1 INTRODUCTION This appendix provides the RN52 Evaluation Boards schematic, PCB layout and Bill of Materials (BOM). • • • • A.2 RN52 Evaluation Kits Schematic RN52 Evaluation Kits PCB Layout and Assemble Drawings RN52 Evaluation Kits Bill of Materials RN52 Evaluation Kits Physical Dimensions RN52 EVALUATION KITS SCHEMATIC Figure A-1 shows the RN-52-EK schematic.  2014 Microchip Technology Inc. DS50002153A-page 29 RN52 Bluetooth Audio Evaluation Kit User’s Guide PCM_IN PCM_OUT PCM_SYNC PCM_CL K 28 30 SPI _SS 31 29 SPI _SCK SPI _MI SO SPI _MOSI MI C_L + MI C_BI AS L ED0 36 35 34 33 32 MI C_R+ 37 L ED1 MI C_L 38 39 MI C_R- SPKR_L 42 41 40 SPKR_R+ 43 SPKR_R- SPKR_L + 44 SPI _SS SPI_MISO SPI_SCK SPI_MOSI L ED1 L ED0 MIC_BIAS MIC_L+ MIC_R+ MIC_LMIC_RAGND SPKR_RSPKR_LSPKR_R+ SPKR_L + GND L ED0 L ED1 3.3V R8 47R D3 Blue LED 3.3V R9 470 D2 PI O3 Red LED R2 47k M1 RN52 Module UART_RX UART_CTS 17 UART_RTS UART_TX 14 R1 S5 C4 10nF Wake USBDUSBD+ 22k USBD- UART_TX UART_RX PI O9 PI O9 USBD+ 12 3.3V 1 3 5 7 9 11 13 15 D1 GND VBUS MBR120 J2 1 VBUS 2 D3 6 D+ MTAB 5 VBUS AI O0 3.3V PCM_I N PCM_OUT PCM_SYNC PCM_CL K C9 47nF 47nF S6 Next S2 Vol Down C12 1uF USB Mini B / RSVD USB 2 4 6 8 10 12 14 16 C8 47nF C10 47nF C11 MI C_BI AS J3 EXT Connector MI C_L - 11 BTN_PLAY MI C_R- MI C_L + MI C_R+ BTN_NEXT BTN_VOL DOWN 8 BTN_VOL UP 10 7 BTN_PREVI OUS 6 S3 Play / Pause S4 Vol Up PI O4 PI O2 AI O0 3 PI O3 1 2 4 5 9 13 15 16 PI O7 PI O6 PWREN UART_RX UART_TX UART_CTS UART_RTS USBD+ USBDGPIO9 GPIO10 GPIO11 GPIO13 GPIO5 GPIO12 GPIO4 AIO0 GPIO2 GPIO3 GND Prev S1 R7 2k2 VBUS MI C_R MI C_L SPKR_RSPKR_L SPKR_R+ SPKR_L + R6 2k2 MI C_L MI C_R BTN_VOL UP BTN_VOL DOWN BTN_PL AY BTN_NEXT BTN_PREVI OUS J11 1 2 Battery 1 3 5 7 9 J7 1 2 MI CL J8 MI CR 1 2 J6 2 4 6 8 10 VBUS MI C_L + MI C_R+ MI C_L MI C_RMI C_BI AS 4J5 3 5 2 1 1 Vin 3.3V TC1262- 3.3V Mic PI O2 PI O4 BTN_VOLUP BTN_NEXT BTN_PLAY BTN_PREVI OUS BTN_VOLDOWN PI O7 PI O6 PWREN C6 1uF SPKR_L SPKR_L + SPKR_R+ R70 SPKR_R- 1 2 3 4 5 6 7 8 9 10 11 12 J10 C22 1uF C14 1uF C21 1uF C18 1uF C13 1uF 2k2 R15 22k R17 22k R16 47k R11 47k R13 22k R12 22k C2 VBUS 100nF UART_RX UART_TX UART_CTS UART_RTS 30 TXD 2 RXD 32 RTS 8 CTS 31 DTR 6 DSR 7 DCD 3 RI 3.3V U2 3 C7 1uF SPI MASTER 1 2 3 4 5 6 J4 22 CBUS0 21 CBUS1 10 CBUS2 11 CBUS3 9 CBUS4 Vout SPI _MI SO SPI _MOSI SPI _SCK SPI _SS 3.3V VBUS IN2- IN2+ BYPASS IN1+ IN1- C15 10uF 2 3 4 7 8 47k R14 10 R10 47k C3 6 1 C16 100nF Vo1 9 U4 TPA6112 100nF C1 28 27 18 14 15 U1 FT232RQ 100nF USBDM RESET USBDP OSCI OSCO Vo2 SHUTDOWN V DD VBUS C20 100uF C23 100uF C17 100uF C19 100uF J1 6 Headphones 1J9 2 5 3 4 MTAB USB Mini B / CSR UART GND 1 VBUS 2 D3 D+ 5  2014 Microchip Technology Inc. DS50002153A-page 30 PA D 11 GND 5 3V 3OUT 1 V CCIO 19 V CC 20 GND 17 GND 4 GND 24 A GND 33 T HPA D 16 T E ST 26 T ab 4 GND 2 18 GND 19 GPIO7 21 GPIO6 20 PWR E N 49 GND 50 GND 23 V DD 22 GND 48 PCM_IN 26 PCM_CL K 24 PCM_OUT GND 47 GND 46 PCM_SY NC 27 GND 25 GND 45 RN52 EVALUATION BOARD SCHEMATIC FIGURE A-1: RN52 Audio Evaluation Kits Schematics A.3 RN52 EVALUATION KITS PCB LAYOUT AND ASSEMBLE DRAWINGS The RN52 Evaluation Board is a 2-layer, FR4, 0.062 inch, plated through a hole PCB construction. Figure A-2 through Figure A-7 show the PCB constructions and Assembly Drawings. FIGURE A-2: RN52 EVALUATION BOARD TOP SILKSCREEN FIGURE A-3: RN52 EVALUATION BOARD BOTTOM SILKSCREEN  2014 Microchip Technology Inc. DS50002153A-page 31 RN52 Bluetooth Audio Evaluation Kit User’s Guide FIGURE A-4: RN52 EVALUATION BOARD TOP COPPER FIGURE A-5: RN52 EVALUATION BOARD BOTTOM COPPER DS50002153A-page 32  2014 Microchip Technology Inc. RN52 Audio Evaluation Kits Schematics FIGURE A-6: RN52 EVALUATION BOARD TOP ASSEMBLY FIGURE A-7: RN52 EVALUATION BOARD BOTTOM ASSEMBLY  2014 Microchip Technology Inc. DS50002153A-page 33 RN52 Bluetooth Audio Evaluation Kit User’s Guide A.4 RN52 EVALUATION KITS BILL OF MATERIALS TABLE A-1: RN-52-EK BOARD BILL OF MATERIALS Reference C1, C2, C3 Value Description Vendor 100 nF Capacitor, Ceramic, -20%, 80%, 16V, Y5V, 0402 C4 10 nF Capacitor, Ceramic, 10%, 50V, X7R, 0402 Yageo CC0402KRX7R9BB103 C6, C7, C18 1 F Capacitor, Ceramic, -20% / 80%, 16V, Y5V, 0603 Yageo CC0603ZRY5V7BB105 C8, C9, C10, C11 47 nF Capacitor, Ceramic, 10%, 16V, X7R, 0402 Taiyo Yuden EMK105B7473KV-F Capacitor, Ceramic, 10%, 16V, X5R, 0402 TDK Corporation C1005X5R1C105K C12, C13, C14, 1 F C21, C22 Yageo Vendor P/N CC0402ZRY5V7BB104 C15 10 F Capacitor, Ceramic, 20%, 10V, X5R, 0603 TDK Corporation C1608X5R1A106M C16 100 nF Capacitor, Ceramic, -20% / 80%, 16V, Y5V, 0603 Yageo CC0603ZRY5V7BB104 C17, C19, C20, 100 F C23 Capacitor, Ceramic, -20%, +80%, 6.3V, Y5V, Taiyo Yuden 1206 D1 MBR120 Schottky Diode, 1 A, 20 V, SOD-123F ON Semiconductor MBR120ESFT1G D2 Red LED Clear, Red LED, 10 mA, 1.8 V, 638 nm, 130 degrees, 1206 Lite-On Inc LTST-C150CKT D3 Blue LED Clear, Blue LED, 20 mA, 3.3 V, 470 nm, 130 degrees, 1206 Lite-On Inc LTST-C150TBKT J1, J2 USB Mini B / CSR Connector USB RCPT MINI B 5PS R/A UART, USB Mini B / SMD CSR USB JAE DX2R005HN2E700 J3 – Generic 0.1" Pitch 2x8 Male Pin Header – – – JMK325F107ZM-T J4 – Generic 0.1" Pitch 1x6 Male Pin Header – J5 Audio Jack, Pink Connector, jack stereo, 5POS 3.5 mm SMD CUI, Inc. SJ1-3515-SMT-PI J9 Audio Jack, Green Connector, jack stereo, 5POS 3.5 mm SMD CUI, Inc. SJ1-3515-SMT-GR M1 – RN-52 Module Microchip RN-52 R1, R12, R13, R15, R17 22 k Res, 5%, 0.1 W, 0402 Panasonic - ECG ERJ-2GEJ223X R2, R10, R11, R14, R16 47 k Res, 5%, 0.1 W, 0402 Panasonic - ECG ERJ-2GEJ473X R6, R7, R70 2k2 Res, 5%, 0.1 W, 0402 Panasonic - ECG ERJ-2GEJ222X R8 47R Res, 5%, 0.1 W, 0402 Panasonic - ECG ERJ-2GEJ470X R9 470 Res, 5%, 0.1 W, 0402 Panasonic - ECG ERJ-2GEJ471X S1, S2, S3, S4, Push button S5, S6 Tactile and Jog Switches 6x6 260gf Red SMT Mountain Switch 101-TS6923T2605-EV U1 FT232RQ IC USB FS Serial UART 32-QFN FTDI FT232RQ-REEL U2 TC1262-3.3V Linear Voltage Regulator Microchip TC1262-3.3VDBTR U4 TPA6112 IC Amp Audio Power .15 W AB 10MSOP Texas Instruments TPA6112A2DGQR DS50002153A-page 34  2014 Microchip Technology Inc. RN52 Audio Evaluation Kits Schematics A.5 RN52 EVALUATION KITS PHYSICAL DIMENSIONS Figure A-8 shows the physical dimensions of the RN52 Evaluation Board. FIGURE A-8: RN-52 PHYSICAL DIMENSIONS  2014 Microchip Technology Inc. DS50002153A-page 35 RN52 Bluetooth Audio Evaluation Kit User’s Guide NOTES: DS50002153A-page 36  2014 Microchip Technology Inc. Worldwide Sales and Service AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://www.microchip.com/ support Web Address: www.microchip.com Asia Pacific Office Suites 3707-14, 37th Floor Tower 6, The Gateway Harbour City, Kowloon Hong Kong Tel: 852-2401-1200 Fax: 852-2401-3431 India - Bangalore Tel: 91-80-3090-4444 Fax: 91-80-3090-4123 Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 Atlanta Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455 Austin, TX Tel: 512-257-3370 Boston Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Cleveland Independence, OH Tel: 216-447-0464 Fax: 216-447-0643 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Novi, MI Tel: 248-848-4000 Houston, TX Tel: 281-894-5983 Indianapolis Noblesville, IN Tel: 317-773-8323 Fax: 317-773-5453 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 New York, NY Tel: 631-435-6000 San Jose, CA Tel: 408-735-9110 Canada - Toronto Tel: 905-673-0699 Fax: 905-673-6509 DS50002153A-page 37 Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 China - Beijing Tel: 86-10-8569-7000 Fax: 86-10-8528-2104 China - Chengdu Tel: 86-28-8665-5511 Fax: 86-28-8665-7889 China - Chongqing Tel: 86-23-8980-9588 Fax: 86-23-8980-9500 China - Hangzhou Tel: 86-571-8792-8115 Fax: 86-571-8792-8116 China - Hong Kong SAR Tel: 852-2943-5100 Fax: 852-2401-3431 China - Nanjing Tel: 86-25-8473-2460 Fax: 86-25-8473-2470 China - Qingdao Tel: 86-532-8502-7355 Fax: 86-532-8502-7205 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 China - Shenzhen Tel: 86-755-8864-2200 Fax: 86-755-8203-1760 China - Wuhan Tel: 86-27-5980-5300 Fax: 86-27-5980-5118 China - Xian Tel: 86-29-8833-7252 Fax: 86-29-8833-7256 India - New Delhi Tel: 91-11-4160-8631 Fax: 91-11-4160-8632 India - Pune Tel: 91-20-3019-1500 Japan - Osaka Tel: 81-6-6152-7160 Fax: 81-6-6152-9310 Japan - Tokyo Tel: 81-3-6880- 3770 Fax: 81-3-6880-3771 Korea - Daegu Tel: 82-53-744-4301 Fax: 82-53-744-4302 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 France - Paris Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 Germany - Dusseldorf Tel: 49-2129-3766400 Germany - Munich Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Germany - Pforzheim Tel: 49-7231-424750 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Italy - Venice Tel: 39-049-7625286 Malaysia - Kuala Lumpur Tel: 60-3-6201-9857 Fax: 60-3-6201-9859 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 Malaysia - Penang Tel: 60-4-227-8870 Fax: 60-4-227-4068 Poland - Warsaw Tel: 48-22-3325737 Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-5778-366 Fax: 886-3-5770-955 Spain - Madrid Tel: 34-91-708-08-90 Fax: 34-91-708-08-91 Sweden - Stockholm Tel: 46-8-5090-4654 UK - Wokingham Tel: 44-118-921-5800 Fax: 44-118-921-5820 Taiwan - Kaohsiung Tel: 886-7-213-7830 Taiwan - Taipei Tel: 886-2-2508-8600 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 China - Xiamen Tel: 86-592-2388138 Fax: 86-592-2388130 China - Zhuhai Tel: 86-756-3210040 Fax: 86-756-3210049 03/13/14  2014 Microchip Technology Inc.