1

Board Description and Memory Maps

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.

Table 1-10. Presence Detect Register

REG

 

 

Presence Detect Register - 0xF1100004

 

 

 

 

 

 

 

 

 

 

 

BIT

7

6

 

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

FIELD

 

 

 

 

 

 

L

 

 

 

RSVD

RSVD

 

IPMC_PRSNT

EREADY1

EREADY0

PCIE_PRSNT_

PMC1P_L

PMC0P_L

 

 

 

 

 

 

 

 

 

 

OPER

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESET

X

X

 

X

X

X

X

X

X

 

 

 

 

 

 

 

 

 

 

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.

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Image 29
Emerson MVME6100 manual Presence Detect Register, Ipmcprsnt, EREADY1, EREADY0