Intel Xeon User Manual

Design Guide 207
Schematic Checklist
Hot Plug – Single Slot Parallel Mode Specific
PxIRQ[14:8]
1
• Pulled to 3.3 Vcc through an 8.2 kΩ ± 5%
resistor.
• These signals are mapped to
hot plug functions in single slot
hot plug mode.
HPx_SLOT[2:0]
1
SLOT[0]: Use an 8.2 kΩ pull-up to VCC_3.3.
SLOT[1]: Use an 8.2 k
Ω pull-down to ground.
SLOT[2]: Use an 8.2 k
Ω pull-down to ground.
• This is a strapping pin for
enabling Single Slot Parallel
Mode which is latched during
reset. SLOT[1] also functions as
the HxPCIXCAP2A input when
not in reset. SLOT2 also
functions as the HxPCIXCAP1A
input when not in reset. Refer to
Table 8-8.
PxIRQ[15]
1
• Pulled to 3.3 Vcc through an 8.2Ω – 10 kΩ
resistor.
• A logic 1 on this pin indicates to
the controller that the PCI slot
should be immediately powered
off. This signal is also
connected to a SPST switch to
ground which, when pressed,
indicates by means of a logic 0
that the slot can be powered on.
Hot Plug – Dual Slot Parallel Mode Specific
HPx_SLOT[2:0]
1
SLOT[0]: Use an 8.2 kΩ pull-down to ground.
SLOT[1]: Use an 8.2 k
Ω pull-up to VCC_3.3.
SLOT[2]: Use an 8.2 k
Ω pull-down to ground.
• This is a strapping pin for
enabling Single Slot Parallel
Mode which is latched during
reset. SLOT[1] also functions as
the HxPCIXCAP2A input when
not in reset. SLOT2 also
functions as the HxPCIXCAP1A
input when not in reset. Refer to
Table 8-8.
PxIRQ[15]
1
PxIRQ[10]
1
• Pulled to 3.3 Vcc through an 8.2 – 10 kΩ ± 5%
resistor.
• A logic 1 on this pin indicates to
the controller that the PCI slot
should be immediately powered
off. This signal is also
connected to a SPST switch to
ground which when pressed
indicates by means of a logic 0
that the slot can be powered on.
PxIRQ[9:8]
1
PxIRQ[14:11]
1
• Pulled to 3.3 Vcc through an 8.2 kΩ ± 5%
resistor.
• These signals are mapped to
hot plug functions in dual slot
hot plug mode.
PPxSID
1
• In dual-slot Hot Plug mode, connect this signal
to ground through an 8.2 k
Ω ± 5% pull-down
resistor.
• This insures that the LED for
slot B on busses A and B
remain off during reset.
Hot Plug – Serial Mode Specific
HPx_SLOT[2:0]
1
• Pulled to VCC_3.3 or ground through an
8.2 k
Ω ± 5% resistor depending on the number
of PCI hot plug slots to be enabled.
• This is a strapping pin for
enabling Serial Mode.
Table 13-4. Intel
®
P64H2 Schematic Checklist (Sheet 4 of 5)
Checklist Items Recommendations Comments

Intel Xeon Specifications

General

Brand	Intel
Model	Xeon
Category	Processor
Language	English