Signal Description
Table 2-23. Hot Plug Mode Settings
# of Slots (Intel® 6700PXH 64-bit
PCI Hub SHPC Mode)
HPx_SLOT[3:0]
Slot Configuration Register [4:0]
Hot Plug Disabled1
0000
0001
0010
0011
0100
0101
0110
0111
1 Slot
2 Slots
3 Slots
4 Slots
5 Slots
6 Slots
7 Slots
8 Slots
00001
00010
00011
00100
00101
00110
00111
01000
Hot Plug Enabled
1000
1001
1010
1011
1100
1101
1110
1111
Reserved
1-slot (parallel)
2-slot (parallel)
3-slot (serial)
N/A
00001
00010
00011
00100
00101
00110
00001
4-slot (serial)
5-slot (serial)
6-slot (serial)
1-slot-no-glue (parallel)
NOTE: HPx_SLOT[2:0] are optional when Hot Plug is disabled.
2.12.2
Output Control
The output interface is responsible for driving six bits per slot. These signals are mapped onto
Intel® 6700PXH 64-bit PCI Hub pins as shown in Table 2-24 and Table 2-25 for serial mode and
Table 2-26 for parallel mode.
• POWER ENABLE: Connected to an analog component designed to regulate current and
voltage of the PCI slot, and generates a (power) fault signal when an abnormal condition is
detected.
• CLOCK ENABLE#: Connects the PCI clock signals of the PCI slot to the PCI bus via FET
isolation switches.
• BUS ENABLE#: Connects the PCI bus signals of the PCI slot to the system bus PCI bus via
FET isolation switches.
• RESET#: Connected to the RST# pin of the PCI slot.
• ATNLED#: Connected to the optional attention LED, which is yellow or amber in color.
• PWRLED#: Connected to the power LED, which is green in color.
48
Intel® 6700PXH 64-bit PCI Hub Datasheet
INTEL [ INTEL ]
