Specifications

5
Summary of IPMC controls
53
Summary of IPMC controls
TheIPMCmanagesresets,powerstates,andIPMBisolationfortheCPManditsAMCand
RTM.Theoutputactuators(definedinthePICMG2.0specification)areimplementedas
IPMCGPIOoutputscontrolledbytheIPMIfirmware.
Note:Undernormalrunningconditions,theIPMCcontrolsthestateoftheGPIOoutputs.
However,thecontrolscanbeaccessedfordebugsituationsusingtheSet/GetControl
StateOEMIPMIcommands.
CPM controls
TheIPMCmanagestheCPMcontrolslistedinTable 10.
AMC controls
TheIPMCmanagestheAMCcontrolslistedinTable 11.
Table 10. IPMC-managed CPM controls
Control Function
Payload Cold Reset Platform Reset: controls Payload Cold Reset (generates SYS_RESET* to the I/O controller hub)
Payload Power Enable (Main) CPM Payload Power Enable: controls the board main payload power supplies
IPMB0-A Isolator Isolates the CPM IPMB0-A from the IPMB (Backplane)
IPMB0-B Isolator Isolates the CPM IPMB0-B from the IPMB (Backplane)
Boot Flash Select FLASH_SEL: controls the selection of which SPI flash device (0 or 1) is used for the BIOS during
boot-strap
NMI Control NMI: used to assert NMI to the payload processors.
Payload Interrupt Control SERIRQ: used to assert the messaging interrupt to the payload processor.
CLK3_ENABLE CLK3_EN: used to enable the CLK3A and CLK3B output buffers
Graceful Shutdown Interrupt Asserts or de-asserts the interrupt to the X86 processor complex; indicating a graceful shutdown
needs to be started.
Update Channel 4 TX Enable UPDATE4_TXEN: used to enable or disable the update channel 4 transmission
Update Channel 4 RX Enable UPDATE4_RXEN: used to enable or disable the update channel 4 reception
Table 11. IPMC-managed AMC controls
Control Function
AMC Payload Power Enable (+12V) AMC Bay Power Enable: controls AMC 12V power
AMC Isolator AMC IPMB Enable: isolates the AMC module from the CPM IPMB-L (I2C Bus 5)
AMC Payload Reset AMC Bay MMC Reset (ENABLE*)
AMC_PCIE_PRES Asserted for AMC with PCI Express capability when the AMC is ready to be activated.
AMC_PCIE_BUTTON Asserted for AMC with PCI Express capability to notify OS that the PCIe links can now be enabled
(for training during activation) or disabled (during deactivation).
AMC Management Power (+3.3V) AMC_+3_3 Power Enable: controls AMC 3.3V management power
AMC PCIE CLK Enable AMC_CLKEN: enables or disables 100Mhz differential clock for PCI Express on AMC bay