Intel Pentium M Processor Design Manual page 261

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Table 98. Intel P64H2 Schematic Checklist (Sheet 2 of 5)
Checklist Items
PxPCIXCAP
Px_133EN
PAIRQ[15:0]
PBIRQ[15:0]
APICCLK
APICD[1:0]
PxPCIXCAP
M66EN
HxSWITCH
HxPRSNT1#
HxPRSNT2#
HPx_SLOT[2:0]
PxIRQ[14:8]
Design Guide
®
Intel Pentium
Recommendations
• If implementing hot plug, PxPCIXCAP should
be pulled up to 3.3 V through an 8.2 k Ω resistor.
• If not implementing hot plug, this signal requires
8.2 k Ω resistor pull-up or pull-down depending
on the configuration.
• For 133 MHz (max) PCI-X capable bus:
8.2 k Ω ± 5% pull-up to 3.3 V.
• For 100 MHz (max) PCI-X capable bus:
8.2 k Ω ± 5% pull-down to ground.
Interrupt Interface Signals
8.2 k Ω ± 5% pull-up to 3.3 V
8.2 k Ω ± 5% pull-up to 3.3 V.
Hot Plug Interface Enabled
8.2 k Ω ± 5% pulled up to 3.3 V.
8.2 k Ω ± 5% pulled up to 3.3 V.
Connect to MRL Sensor. Open MRL should pull
HxSWITCH to 3.3 V. Closed MRL should pull
HxSWITCH to GND.
• 5.6 k Ω ± 5% pull-up to 3.3 V .
• If implementing Attention Button, PRSNT1# is
the XOR of the momentary push-button and
Slot Present signal.
Hot Plug – Single Slot Parallel Mode Specific Signals
• SLOT[0]: 8.2 k Ω pull-up to 3.3 V.
† • SLOT[1]: 8.2 k Ω pull-down to GND.
• SLOT[2]: 8.2 k Ω pull-down to GND.
†
8.2 k Ω ± 5% pull-up to 3.3 V.
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M Processor and Intel
®
E7501 Chipset Platform
Schematic Checklist
Comments
If not implementing hot plug, see
PCI-X Specification
recommendations for PxPCIXCAP
connection.
Only active if Px_PCIXCAP pins
are high.
These PCI signals are connected
®
to separate pins on the Intel
P64H2. See Section 8.2.7.3, and
Section 8.2.8.4 for the
corresponding Hot-Plug mode
implementation. Unused inputs
should not float.
Unused inputs should not float.
Refer to Section 8.2.2.
Refer to Section 8.2.2.
• 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 Section 8.2.6.1.
These signals are mapped to hot
plug functions in single slot hot
plug mode.
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