產品芯片手冊sfp status and control design spec vSFP光模塊狀態(tài)控制與信息讀取

VersionRevisionRecordChangeYi修改了SFP信息的函數接YiTableofContents目Introduction簡 Requirement需 FeatureRequirement特性需 SpecialRequirement特殊需 Scope范 TermsandAcronyms術語和縮 Architecture體系結 SFP狀態(tài)控 SFP信息....................................................................................................................................................實現原 I2C 實現方 SFP狀態(tài)控 SFP信息DFD數據流程 DataStructure數據結 DataTypeDefinitions數據類型定 ConstantDefinitionsandGlobalVariables常量定義和全局變 Interfaces界 DriverLayerInterfaces驅動層接 CoreLayerInterfaces協(xié)議層接 Procedures過 I2C及TCA9555初始 SFP狀態(tài)控 SFP信息Performance性 Reference參考文 Introduction通過I2C總線對SFPSFP光口狀態(tài)（linkup/linkdown）進行通過I2C總線SFP模塊信息，可以實現實時監(jiān)測光模塊的溫度、供電電壓、激光偏置電流RequirementFeatureRequirement實現SFP光模塊信息的及光口狀態(tài)的控制4個SFPSpecialRequirementScope本文檔主要介紹怎樣通過I2C總線對SFP光模塊狀態(tài)進行控制，以及怎樣利用I2CSFPEEPROM的信息。TermsandAcronymsInterIntegratedSmallForm-factorDigitalDiagnosticArchitecture

UI

L2_L4

CoreDEV_SWDRV_PMGR_EnablePortAdmin()Driver

Driver

DEV_SWDRV_EnablePortAdmin()

UI

stktplgproc

Core

Driver

Driver I2CI2CPCA9548channelI2C 擴展器的channel0與TCA9555相連，channel3-64SFP寄存器相連。PCA9548控制8位，每一位對應一個channel。SFP在EEPROM定義了256字節(jié)的內存映像圖，標準接口、制造商和其他信息，可以通過I2C接口在8位地址 X(A0h)SFP信息需先打開相應的channel，然后通過I2C。EEPROM前128字節(jié)分別表示SFP的各類信息（序號、出廠商、溫度、收發(fā)器供電電壓、激光偏置電流、光輸出功率、輸入功率等），后128字節(jié)保留。SFP收發(fā)器引腳狀態(tài)的及控制通過配置TCA9555的相關寄存器來完成。TCA的P埠與SFP狀register的值。TCA9555I2C地址為。registerport0對應P0 P3 registerport1對應P10 P11 在webcliSFP光口管理狀態(tài)，UICore層，Core層發(fā)消息給Driver層，Driver層函數調用I2C總線驅動尋址PCA9548I2CTCA9555相連的channel是否開啟，若未開啟則先配置PCA控制寄存器開啟channel（開啟則不必此操作），接著I2C尋址TCA9555SFP光口。在webcli下showSFP埠，UICore層，CoreSFP引腳狀態(tài)的判斷（需消息給Driver，Driver層調用I2CSFP信息值，在web或cli顯示SFP信息。DataStructureDataTypeDefinitionstypedefstruct{UI8_T spec:temperature,voltage,bias,tx,rxthresholdtom_hoUI8_Ttemp_high_alarm_msb;UI8_TUI8_Ttemp_low_alarm_msb;UI8_Ttemp_low_alarm_lsb;UI8_Tvoltage_high_alarm_msb;UI8_Tvoltage_high_alarm_lsb;UI8_Tvoltage_low_alarm_msb;UI8_Tvoltage_low_alarm_lsb;UI8_Tbias_high_alarm_msb;UI8_Tbias_high_alarm_lsb;UI8_Tbias_low_alarm_msb;UI8_Tbias_low_alarm_lsb;UI8_Ttx_pwr_high_alarm_msb;UI8_Ttx_pwr_high_alarm_lsb;UI8_Ttx_pwr_low_alarm_msb;UI8_Ttx_pwr_low_alarm_lsb;UI8_Trx_pwr_high_alarm_msb;UI8_Trx_pwr_high_alarm_lsb;UI8_Trx_pwr_low_alarm_msb;UI8_Trx_pwr_low_alarm_lsb;//temperature,voltage,bias,tx,rx tom_ho/*UI8_Ttemperature_msb;UI8_Ttemperature_lsb;/*UI8_Tvcc_msb;UI8_Tvcc_lsb;/*txUI8_Ttx_bias_msb;UI8_Ttx_bias_lsb;/*txUI8_Ttx_power_msb;UI8_Ttx_power_lsb;/*rxUI8_Trx_power_msb;UI8_Trx_power_lsb;/*alarmflag*/UI8_Talarm_flag_1;UI8_T/*warningflag*/UI8_Twarning_flag_1;UI8_TExnation:ThisstructisusedtodefinetheSFPEEPROMConstantDefinitionsandGlobalVariables量1)#defineTWSI_PCA9548_ADDRESS #define #define Exnation:DefinetheaddressoftheI2CslavedeviceInterfacesDriverLayerInterfacesBOOL_TExnation:ThisfunctionisforSFPconrolsignalsinitializedand :Output:Rerurn:True:Successfully,FALSE:BOOL_TDEV_SWDRV_SfpHandle_EnableTxDisable(UI32_TUI32_Tport,BOOL_Tenable)Exnation:ThisfunctionisusedtoenableSFPTx-disableInput:UI32_T -unitUI32_T -fiberportserialnumber,from25to Output:Rerurn:True:Successfully,FALSE:3）BOOL_TExnation:ThisfunctionisusedtoenableallSFPTx-Disable :Output:Rerurn:True:Successfully,FALSE:BOOL_TExnation:ThisfunctionisusedtodisableallSFPTx-Disable :Output:Rerurn:True:Successfully,FALSE:UI32_TBOOL_TExnation:ThisfunctionisusedtodetectSFPMod-D0 :UI32_T -unitUI32_T -fiberportserialnumber,from25to Output:Rerurn:True:Successfully,FALSE:BOOL_TDEV_SWDRV_SfpHandle_IsRxLoss(UI32_TUI32_TBOOL_TExnation:ThisfunctionisusedtodetectSFPRx-Loss :UI32_T -unitUI32_T -fiberportserialnumber,from25to Output:Rerurn:True:Successfully,FALSE:BOOL_TDEV_SWDRV_SfpHandle_IsTxFault(UI32_TUI32_TBOOL_TExnation:ThisfunctionisusedtodetectSFPTx-Fault :UI32_T -unitUI32_T -fiberportserialnumber,from25to Output:Rerurn:True:Successfully,FALSE:BOOL_TDEV_SWDRV_SfpHandle_IsTxDisabled(UI32_TUI32_TBOOL_TExnation:ThisfunctionisusedtodetectSFPTx-Disabled :UI32_T -unitUI32_T -fiberportserialnumber,from25to Output:Rerurn:True:Successfully,FALSE: DEV_SWDRV_DetectSfpDDMInfo(UI32_T Exnation:ThisfunctionisusedtoreadinfofromSFPEEPROMviatoTWSI :unit_id——whichsfp_port_id——whichsfpOutput:sfp_info——theinforeadfromSFPRerurn:True:Successfully,FALSE:CoreLayerInterfaces Exnation:UseI2CtoreadtheSfpinformationandrecordin :device_index --deviceindex. --sfpportindex. Exnation:UseI2CtoreadtheSfpinformationandrecordin :device_index --deviceindex. --sfpportindex. Exnation:ThisfunctionisusedtoreadinfofromSFPEEPROMviatoTWSI :unit_id——whichsfp