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Board Description and Memory Maps
1
Presence Detect Register
The MVME5500 board contains a presence detect register that may be
read by the system software to determine the presence of optional devices.
IPMC_PRSNT
IPMC Module Present. If set (HIGH true), there is PMCspan module
installed. If cleared, the PMCspan module is not installed.
EREADY1
EREADY1. Indicates that the PrPMC module installed in PMC slot 2
is ready for enumeration when set. If cleared, the PrPMC module is not
ready for enumeration. The PrPMC software must assert EREADY#
for this bit to be set. The purpose of EREADY# is to provide a
signaling method indicating that a non-monarch (vassal) PrPMC is
ready to be enumerated.
EREADY0
EREADY0. Indicates that the PrPMC module installed in PMC slot 1
is ready for enumeration when set. If cleared, the PrPMC module is not
ready for enumeration. The purpose of EREADY# is to provide a
signaling method indicating that a non-monarch (vassal) PrPMC is
ready to be enumerated.
Table 1-10. Presence Detect Register
REG Presence Detect Register - 0xF1100004
BIT 76543210
FIELD
RSVD
RSVD
IPMC_PRSNT
EREADY1
EREADY0
PCIE_PRSNT_L
PMC1P_L
PMC0P_L
OPER R
RESET XXXXXXXX