《ITEEC架构介绍》.ppt
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1、Speaker:WYITE 8512 1精选课件Whats the EC?nEmbedded Controller comes form ACPI structurenHost is communicated EC by LPC interface.The I/O port are 60/64 and 62/66 nEC integrated ps2 device,keyboard matrix,battery charger,fan control,power sequence,hot key function,backlight,CPU thermal sensor,system powe
2、r consumption,etc.2精选课件System StructurePS/2 KB/MSMATRIXFAN ControlChargerFlash ROM Power Sequence.NB SB ECLPC3精选课件Keyboard Controller Overview18 Scan Out(Column)Scan MatrixKeyboard 3 PS/2 DevicesHost SystemLPC/Firmware HubSMBusITE KBCPS/2ScanI2CHIF3 SMBus Devices8 Scan In(Row)4精选课件EC Feature ITE ECP
3、S/2 KB/MSMATRIXACPIPower managementSMBusKBS MonitorUART/CIRPWM ADC/DACShare BIOS5精选课件EC Position6精选课件Share BIOS Architecture 64K16M ByteBIOS ROM ZoneKBC ROM Zone064KMax:16M64K ByteMax:16M-64K ByteFull space 16M ByteKBC ROM Zone7精选课件BIOS&EC Code Position8精选课件FeaturesnIBM AT&PS/2 8042-Compitable Host
4、InterfacesnSupport all standard Host CommandsnACPI Embedded Controller InterfacenACPI System Management Bus InterfacenPS/2 DevicesnScan Matrix KeyboardnOEM Customization9精选课件Features Host InterfacenHost InterfacesPrimary Host Interface(0 x60,0 x64)HIF1 8042 Command InterfaceSecondary Host Interface(
5、0 x62,0 x66)HIF2 Logical HIF ACPI Command InterfaceHIF3 Logical HIF SMI AccessThird Host Interface(0 x68,0 x6C)nIBM AT&PS/2 8042-CompatibleStandard KBC Commands 0 x64 port Standard KBD Commands-0 x60 port Standard AUX Commands 0 x64 port D4 command10精选课件Command Handler11精选课件BitDescription7 Parity Er
6、ror6 Timeout Error5 Auxiliary Output Buffer Full4 Inhibit Switch3 Command/Data2 System Flag1 Input Buffer Full(IBF)0 Output Buffer Full(OBF)n Keyboard Controller Status Register 64h12精选课件Features Standard KBC CommandsStandard 64 command listnWrite/Read Keyboard Controller Command Byte(60h/20h)nThe K
7、CCB resides in 8042 RAM location 20h,Address 20h defined in the IBM 8042 programming specification.nIBM standard command set,use command 20h to read the KCCB and command 60h to write KCCB.Default:0 x65 PS/2 Mouse Not Present0 x47 PS/2 Mouse PresentvController Command Byte:Bit7-ReservedBit6-Keyboard
8、TranslateBit5-Disable Auxiliary DeviceBit4-Disable KeyboardBit3-ReservedBit2-System FlagBit1-Enable Auxiliary InterruptBit0-Enable Keyboard Interrupt13精选课件Features Standard KBC CommandsnOutput Buffer Write Commands:Write Keyboard Output Buffer(D2h)Write Auxiliary Device Output Buffer(D3h)nWrite to A
9、uxiliary Device Command(D4h)Write to PS2 DevicenPulse Output Port Commands:Pulse Both Reset and Gate A20(FCh)Pulse Gate A20(FDh)Pulse System Reset(FEh)14精选课件Features Standard KBD CommandsStandard KBD 60 command listnSet/Reset Status Indicators Command(EDh)nEcho Command(EEh)nSelect Alternate Scan Cod
10、es Command(F0h)nRead Id Command(F2h)nSet Typematic Rate/Delay Command(F3h)nEnable Command(F4h)nDefault Disable Command(F5h)nSet Default Command(F6h)nSet Keys Commands(F7h-FDh)nResend Command(FEh)nReset Command(FFh)15精选课件Features Standard AUX CommandsStandard PS2 64_D4 command listnReset Scaling(E6h)
11、nSet Scaling to 2:1(E7h)nSet Resolution(E8h)nStatus Request(E9h)nSet Stream Mode(EAh)nRead Data(EBh)nRead/Set Wrap Mode(ECh/EEh)nSet Remote Mode(F0h)nRead Device Type(F2h)nSet Sampling Rate(F3h)nEnable/Disable Auxiliary Device(F4h/F5h)nSet Default(F6h)nReset Auxiliary Device(FFh)16精选课件Features Comma
12、ndsnExtended Controller CommandsSpecific FunctionalitiesAccess Legacy EC SpaceSample A/D ChannelTurn On/Off LEDsAccess Configuration TableEtc.17精选课件Features ACPI InterfacenEmbedded Controller Interface(0 x62/0 x66)nACPI fully supportCommand Setn0 x80-Read EC spacen0 x81-Write EC spacen0 x82-Burst En
13、ablen0 x83-Burst Disablen0 x84-Query SCI event18精选课件Features PS/2 DevicesnThree PS/2 Ports One internal ps2 mouse&two external ps2 device(one keyboard+one mouse)Port 1&Port 2 Keyboard&Pointing DevicesPort 3 Touchpad Devices(Internal)nActive PS/2 MultiplexingnHot-plugif Ext.aux device is also attache
14、d,send command to it but do not pass Ext.response to the system.19精选课件Features Scan MatrixnAll Standard Notebook PC KeysnEasy CustomizationDownload OEM Scan Table in RAMUpdate Scan Table in ROM20精选课件Features OEM CustomizationnOEM-Definable Hotkeys-Hotkey,Quick button nOEM-Definable SMI/SCI Events-Ba
15、ttery event,System Beep,Thermel throttle event,etc 21精选课件Firmware Architecture22精选课件Firmware ROM ImagenKBC.ROM-64KCrisisRecoveryConfigurationTablesScanTablesMainCore0 x0000OEM function0 xFFFF0 x100023精选课件Power UpInitializationIdleInterruptRuntime ServiceEC FlowchartnTop-Level Flow Diagram24精选课件Power
16、 UpInitializationIdleFirmware-InitializationCrisis?CrisisInitializationCrisisRecoveryPower UpIdleNormalInitializationYesNo25精选课件InitializationIdleFirmware-IdleStandbyStandbySetupDisable InterruptsEnableInterruptsYesNoIdle(SLEEP)26精选课件IdleRuntime ServiceInterruptFirmware Runtime ServiceInterruptCheck
17、 ServiceDo ServiceNoYesMore ServiceIdle27精选课件How To Enter Power Down Moden 1.Check condition for enter power-down moden 2.Disable module(reduce leak current)n 3.Change all gpio pin function(if need)(reduce leak current)n 4.Set wake-up pin functionn 5.Set wake-up sourcen 6.Set interrupt sourcen 7.Ent
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- ITEEC架构介绍 ITEEC 架构 介绍
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