A Case Study On Designing And Implementing IR And Remote Solutions For Windows Vista Media Center Systems

1. A Case Study On DesigningAnd Implementing IR And Remote Solutions For Windows Vista Media Center Systems Todd RutherfordProgram ManagerWindows eHome DivisionMicrosoft Corporation

2. Session Overview • Feature overview • Hardware requirements • Interface requirements • Integrating chips into motherboards • Writing a port driver – what your developer needs to know • Certifying your hardware via Windows Hardware Quality Labs (WHQL) – overview of the tests and how to ensure you pass Building an IR receiver/transceiver? Need to write a port driver for your hardware? Then this session is for you!

3. Components Of The IR Transceiver • Remote control input – 10 feet • Receives commands from remote control • Enables “Parse and Match” – ability to identify remote control based on IR data sample • Learning – 2-3 inches • Captures IR from set-top box remote controls to retransmit • IR output (emitting) – 1 inch • Sends IR commands from PC to set top box for changing channels • Allows media center to control TV and satellite set top boxes • System • Resume from standby

4. IR Receiver Hardware Requirements • Option to build either an input only IR receiver or full function IR transceiver • Input only IR receivers can ship with tuner-less media center systems • Full function IR transceivers required when TV tuner card is present • IR receiver/transceiver hardware requirements documentation available on Microsoft Connect • WLP includes requirements • Testing will be in the WDK for RC1

5. Port Driver Interface Requirements • Port driver provide seven services (implemented as IOCTLs) • What are the hardware’s capabilities? • What emitters are connected? • Flash an LED that the user can see • Emit this IR • Listen for IR • Wake from lower power state • Did you wake the system?

6. Case StudyIntegrating IR functionalityon motherboard Glen RockfordDirector of Applications EngineeringSMSC

7. ICH / SB SIO1049 SIO1049 Functional Overview • Consumer IR Port • Support for Microsoft® Windows® MCE Consumer IR codes • Learn Mode Support including Carrier Freq. Measurement. • 4-Channel IR Emitter capability • Programmable Wakeup Event Interface (IO_PME# Pin) • IrDA, HPSIR, ASKIR, Consumer IR Support • Serial Ports, Multi-Mode Parallel Port, GPIO Pins – 14 • Intelligent Auto Power Management • 64-pin VTQFP Package LPC Bus CIR Receive CIR Emitter IrDA Serial Port Parallel Port

8. ICH / SB SIO1049 System Block Diagram LPC Bus Rear Panel Emitter Jacks Front Panel CIR, Learn IN & LED Front Panel CIR Input 2x4 Header 2x3 Header

9. LPC Bus • The SIO1049 is a 3.3V device • The LPC interface pins are 3.3V only • All other SIO1049 pins are 5V tolerant, (+5.5V max input voltage may be applied) • Compliant to LPC Spec V1.1

10. SIO1049 Clocks And Power • Clocks • CLOCKI (14.318 MHz) • CLKI32 (32 KHz) required for CIR wake-up • Power • VCC (+3.3V nominal, V-run) • VTR (+3.3V nominal, V-standby or Vtrkl) • VSS (common digital ground)

11. SIO1049 Configuration • SYSOPT function is a multiplexed function on two General Purpose IO (GPIO) pins • SYSOPT[1:0] – Four Base Address Options • Strapping option on each individual pin latched on the trailing edge of PCI_RESET#

12. CIR Receiver (Long Range, De-Modulator) IR Detectors/Receivers Learn Mode Receiver (Wide Band)

13. ED ETX IR Emitters • Signals • ETX[0:3] – 4 emitter transmit outputs • ED[0:3] – 4 emitter Detect inputs • ETX and ED signals are multiplexed with GPIO pins and are configured by bios • Driver can dynamically detect and enable/disable individual emitter channels • Emitter jacks • SJ-3524-SMT (3.5mm stereo jack) • Series current limiting resistor recommended on ETX (pin2) • Pull-up resistor on ED (pin3) • IR emitters

14. Front Panel Header • CIR Module & IR Wideband Learn Receiver built into the front panel of the case. • 2x4 (keyed) Header, 0.1” on center

15. Rear Panel Header • In-Case or back slot I/O, 2 or 4 (opt.) Emitters • 2x3 (keyed) Header, 0.1” on center

16. Wake Up Support • Full hardware support • Specific Key (unique key) • Key Class (supports more than one key) • PME Wake-Up from sleep states S3, S4, and S5 • Connect IO_PME# pin to the south bridge • Standby voltage always on • 32Khz free running clock to CLKI32 • BIOS configuration required

17. BIOS Porting Considerations • GPIO pin configuration • CIR block (block of 8 I/O registers), 1 IRQ • Emitter block (block of 8 I/O registers), shares IRQ with CIR block • Configure run-time registers for wake-up (block of 16 I/O registers) • BIOS and/or driver can configure wake key • Configure legacy blocks (Serial, Parallel, SIR/FIR) – not required for CIR • SIO1049 BIOS porting guide available now under NDA

18. Writing A Port Driver Peter ViscarolaConsulting PartnerOSR Open Systems Resources, Inc.

19. Media Center CIR Environment

20. CIR Class is root enumerated Port drivers are independent function drivers Enumeration is H/W specific Power policy owner Binding with CIRCLASS at runtime All information exchanges initiated by IOCTLs from port driver Device Object Relationships CIRCLASS ROOT SMSCPort ACPI FDO PDO

21. Port/Class Binding Process • Port driver • Invokes CirCoInst co-installer during installation to ensure CIRCLASS is running • Registers GUID_DEVINTERFACE_IRPORT device interface • Enables device interface when ready to start processing requests • CIRClass • Receives device interface notification • Sends IOCTL_IR_HANDSHAKE to port driver • Port driver • Receives IOCTL_IR_HANDSHAKE from CIRClass • Synchronously completes IOCTL with success

22. DataEnd ByteCount Data[ByteCount] Example Data Exchange IR Data Receive Process CIRCLASS Port driver completes request when: (a) Buffer Full (b) End of key press sequence (timeout) 3 Class driver sends IOCTL_IR_RECEIVE 1 IR_RECEIVE_PARAMS SMSCPort 2 Port driver fills in IR_RECEIVE_PARAMS structure (in input buffer) with RLC-coded received data

23. Data Format RLC Coding • Standard format for Class/Port data exchange • Sequence of LONG (signed) values returned in buffer indicating pulse state • Negative value: Time signal low • Positive value: Signal high IR_RECEIVE_PARAMS 0x0001 DataEnd 0x0010 ByteCount 0x01F4 0xFF38 0x0096 0xFF38 Data 500 usec 200 usec 150 usec 200 usec

24. Other Class/Port Functions • IOCTL_IR_RECEIVE • IOCTL_IR_TRANSMIT • IOCTL_IR_PRIORITY_RECEIVE • IOCTL_IR_HANDSHAKE • IOCTL_IR_FLASH_RECEIVER • IOCTL_IR_GET_DEV_CAPS • IOCTL_IR_GET_EMITTERS • IOCTL_IR_GET_WAKE_SOURCE • IOCTL_IR_RESET_DEVICE • IOCTL_IR_ENTER_PRIORITY_RECEIVE • IOCTL_IR_EXIT_PRIORITY_RECEIVE • IOCTL_IR_USER_CLOSE • IOCTL_IR_USER_OPEN

25. Finally What Did We Learn? • The new CIR Class/Port structure works and is easy to implement • KMDF works amazingly well – no power management code required • The driver’s at the bottom of the hill, and everything flows down on it: Hardware design issues, BIOS integration, software integration

26. Certifying IR Receivers • Validate Hardware passes the documented hardware requirements • Sample IR database sent to and from hardware to validate input, learning and IR emitting paths • All IOCTL’s are verified for valid responses

27. Call To Action • Begin designing and building IR receiver hardware for Windows Vista featuring Media Center • Determine the best place to integrate the functionality into your hardware platform • Review the documentation for writing a port driver for Windows Vista featuring Media Center available on Microsoft Connect • Review the hardware requirements for IR transceivers and receivers • Test your hardware and port driver during the development process

28. Additional Resources • Web Resources • Windows Vista Logo Program Suite • www.microsoft.com/whdc/winlogo/hwrequirements.mspx • Windows Hardware and Driver Central (WHDC) • www.microsoft.com/whdc/default.mspx • Technical Communities • www.microsoft.com/communities/products/default.mspx • Non-Microsoft Community Sites • www.microsoft.com/communities/related/default.mspx • Front Panel I/O Connectivity Design Guide • www.formfactors.org • Technical Chats and Webcasts • www.microsoft.com/communities/chats/default.mspx • www.microsoft.com/events/default.mspx • Related Microsoft Web sites • www.microsoft.com/whdc/system/platform/mediacenter/default.mspx • www.microsoft.com/whdc/driver/wdf/default.mspx • E-mail Resources • – SIO1049 Data Sheet, BIOS Porting Guide & Development/Evaluation Platform Information • – General IR transceiver/receiver questions smsc.mce06 @ smsc.com irrecvr @ microsoft.com

29. © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.