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Cypress CY4672 manual USB Interface, USB Descriptors

Models: CY4672

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Bridge

5.3.12Code Performance Analysis

A keyboard report processing is used to analyze the code performance. A typical keyboard report processing contains the following steps:

■The bridge receives the keyboard report packet and process the packet. This step takes 108 µs.

■MCU calls function handle_keyboard_report() to format USB packet and load this packet into the endpoint buffer. This function consumes 118 µs.

As a result, it takes 226 µs for the bridge to process a keyboard report.

5.4USB Interface

5.4.1USB Descriptors

The USB Descriptors can be viewed/edited with the USB Setup Wizard.

88	CY4672 Reference Design Guide, Document # 001-16968 Revision **

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Cypress CY4672 manual USB Interface, USB Descriptors

Contents

CY4672 Reference Design Guide Copyrights DisclaimerContents 2.3 Programmable Interval Timer User Module 2.4 2.12.2 4.19.2 9.19.3 2.4 1 Millisecond Interval Timer User Module 2.5 6.166.17 6.181.1 1.21.3 100105 107108 109Introduction ScopeChapter Overviews SupportDefinitions ConventionsAcronyms Rssi Introduction WirelessUSB Protocol General OverviewRadio Channel Management Pseudo Noise CodesChip Error Correction Automatic Acknowledgment AutoACKNetwork ID Manufacturing IDProtocol Modes Channel Selection AlgorithmPing Mode Bridge Only Idle ModeBind Mode Reconnect KISSBind ModeReconnect Mode HID only Idle Mode HID onlyButton Bind Mode Enhanced KISSBind Slave Unbind Data ModeBack Channel Data Support Back Channel Transaction Sequence Dynamic Data Rate and Dynamic PA Dynamic Data RatePacket Structures Bind/KISSBind Request Packet HIDBind Response Packet Bridge Connect Request HIDConnect Response Packet Bridge Device TypeData Packet/Back Channel Data Packet Bridge and HID Ping Packet BridgeData Byte 0-N This is byte-aligned application data Bind and Reconnect Timing Bind Timing Diagram Signature Byte DeviceEncryption TEA Key Management over WirelessUSBTEA Encryption AES Encryption TEA Encryption Key ManagementEncryption and Power Consumption Trade Off AES Key ManagementWirelessUSB Protocol Design Features RDK Mouse AssemblyMouse IntroductionBottom View Bind Button and On-Off Switch Hardware Block Diagram SchematicsPRoC LP Device Configuration Firmware ArchitectureHardware Considerations 1 ROM/RAM UsageCYRF69103 Device Architecture Global Configuration SPI Master User ModuleModel Programmable Interval Timer User ModuleFlash Security Common Code Generated Library CodeDebounce Module SPI ModuleTimer Module Radio DriverProtocol Module Flash ModuleISR Module Application CodeMouse Module Optical Module Testmode ModuleMfgtest Module Buttons ModuleWheel Module Configuration Options Battery ModulePlatformh MOUSE800NOT400CPIMfgtestcode MfgtxmodesWireless Protocol Data Payload Platform and Architecture PortabilityInitialization KissbindInterrupt usage and timing Packet Format9.2 Packet Format ByteCode Performance Analysis Development EnvironmentTools Watchdog Timer Tips and TricksCritical Test Points 2.1 M8C SleepKeyboard RDK Keyboard Assembly Keyboard PlasticRadio and PSoC Board PDC-9265 Schematic Bind ButtonKeyboard Matrix RowTotal ROM Total RAM Bytes EnCoRe II Device ConfigurationBuild Option ROM Usage RAM Usage Bytes Microcontroller Device Architecture This parameter is set to Enable This parameter is set to DisableThis parameter is set to Tcap This parameter is set to ‘1’Reset Isr TimerApplication Keyboard Module Test Module Keyboardkeepalivetimeout Encrypt ModuleEncrypttea TimercalEncryptaes Mouseemulationmode Keyboard Application Report Formats Byte Name 0xFCModifier Reserved Scan Code Keys 0x00 0x04 Modifier Reserved Scan Code Keys 0x00Application Report Power Key Scan Ghost Key Detection Interrupt Usage / TimingCode Performance Analysis Modifying the Keyboard Matrix or Adding New Keys Modifying the Keyboard MatrixAdding New Keys Build the firmware, the new key ‘My Computer’ will workRDK Keyboard with POD Installed 10. RDK Keyboard Test Points Bridge Bridge Photographs In-System ProgrammingSchematics LED Usage RDK Bridge with USB Adapter and PSoC MiniProgTotal ROM Bytes Total RAM Bytes Build Option ROM Usage Bytes RAM Usage BytesCYRF69213 Device Architecture This parameter is set to 1Hz This parameter is set to 4.44 4.532.4 1 Millisecond Interval Timer User Module USB Device User ModulePSoC Generated Library Code Modules consist of the common code logical groupingTimer FlashMaster Protocol Bridge ModuleUSB Module Mfgtestcode Powerbind DalenableSuspend and Remote Wakeup Interrupt Usage/TimingPolling method is used for the Bind button Parameter Icc UnitsUSB Interface USB DescriptorsDevice/Config Descriptors Keyboard HID Report DescriptorMouse/Keyboard HID Report Descriptor Keyboard HID Report Descriptor EndpointBridge Keyboard power keys use Report ID Keyboard Report Format Keyboard Endpoint EP1 Reserved Standard KeyWheel Battery Level and Link Quality Reports Mouse Report FormatMouse Endpoint EP2 Report ID Unused Usage ID Usage NameRequesting a New Battery Reading Obtaining the RadioParams ReportExample USB Bus Analyzer Catc Traces 17. Example keyboard Catc Trace Standard and MM Keys18. Example Mouse Catc Trace 19. Example Keyboard Catc Trace Power Key Key UpDevelopment and Debug Environment Few of ways for working with the kit are the followingManufacturing Test Support, MTK MTK Block DiagramMTK Serial Protocol Command Command Description Serial Command ProtocolSerial Response Protocol Accessing MTK in the DUT Serial Port Parameter SettingsMTK RF Protocol MTK DUT Source Code PortingManufacturing Test Support, MTK Regulatory Testing Results Test Parameter FCC Limit Measured Value MarginRegulatory Testing Results Power Considerations Operation Mode Icc mA with Average Icc Supply Voltage =RDK Keyboard Usage ModelMode Hrs/day Days Average Icc mA Charge mAh Battery Life CalculationsRDK Mouse Active mode-Move the mouse in a circle on white Paper Power Considerations Software Code Modules Software GuideUSB HID API module CHidDeviceClass Methods CHidDevice Class MethodsMethod Type Description CHidManager Class Methods CHidManagerClass MethodsCCySysTray Class Methods System Tray ModuleCCySysTray Methods WirelessUSB System Tray Application Module CWirelessUSBTrayApp Class MethodsOnStopTimer Public This method stops the timer OnTimer CMainFrame Class MethodsCWirelessUSBStatusPropertyPage Class Methods CWirelessUSBStatusPropertySheet Class MethodsCHidTrayDevice Class Methods CHidTrayManager Class MethodsAppendix A. References + Feedback Index NumericsLED Pseudo noise codes 13, 14 PSoC Designer generated files Index Revision History + Feedback