HPC3130A
PCI HOT PLUG CONTROLLER
SCPS055 – NOVEMBER 1999
configuration and control registers (continued)
hot-plug slot status register
Bit
7
6
5
4
3
2
1
0
Name
Type
Default
Hot-plug slot status register
R
X
R
X
R
X
R
X
R
X
R
X
R
X
R
X
Register:
Type:
Hot-plug slot status
Read-only
Offset:
Default:
Description:
01h (slot 0), 09h (slot 1), 11h (slot 2), 19h (slot 3)
XXh
This register reports card detection, power status, and other chip input from the hot-plug
slot interface. All bits in this register are read only, and the data read from each bit
represents the logical value of the data input from the corresponding terminal.
Table 9. Hot-Plug Slot Status Register
BIT
7
TYPE
NAME
BUSON
FUNCTION
R
Bus on. This bit returns the logical value of the BUSON terminal output.
6
R
R
R
R
R
R
R
M66EN_I
PWRGOOD_I
PWRFAULT_I
DETECT1_I
DETECT0_I
PRSNT2_I
M66EN input. This bit returns the logical value of the M66EN terminal input.
Power good input. This bit returns the logical value of the PWRGOOD terminal input.
Power fault input. This bit returns the logical value of the PWRFAULT terminal input.
Mech detect 1 input. This bit returns the logical value of the DETECT1 terminal input.
Mech detect 0 input. This bit returns the logical value of the DETECT0 terminal input.
Card present 2 input. This bit returns the logical value of the PRSNT2 terminal input.
Card present 1 input. This bit returns the logical value of the PRSNT1 terminal input.
5
4
3
2
1
0
PRSNT1_I
27
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