Specifications

Components and Subsystems

Intelligent Platform Management Controller

TheIntelligentPlatformManagementController(IPMC)monitorsthehealthofthesystem

andmanagestheCPMhardwarebycontrollingpowertotheCPMpayload,managingthe

sensors,usingE‐Keystoenableports,performingCPMresets,andexecutingIPMI

commands.TheIPMCconsistsofamicrocontroller(aRenesasH8S/2166device),anIPMC

FPGA,andnonvolatileRAM.FormoreinformationabouttheIPMC,refertoChapter5,

HardwareManagement,onpage 49.

CPU complex FPGA

TheCPUcomplexFPGAprovidesthelegacysouthbridgefunctionsrequiredbytheCPM

boardandthefunctionsusedbylegacyoperatingsystems.CPUcomplexFPGAfeatures

include:

• Watchdogtimers(seeIPMCwatchdogonpage 58)

• SupportforEthernetcontrollerLEDsonthefrontpanel

•TransferofRTMstatusandalarmsignalsovertheRTM‐linkbus

• Additionalgluelogic

Accesstomostofthestatusandcontrolfunctionsareprovidedbyaregisterfileinternal

totheFPGA.TheregisterfilecanbeaccessedbytheLPCbus,bytheIPMISMBus,orby

theICHSMBus.Accesstotheregistersissymmetrical;allofthebusseshaveequalaccess

totheinternalregistersoftheFPGAforbothreadingandwriting.