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3.21.1
Design Considerations
•
The Intel
and heat sink support is an optional support structure for retaining the Slot 1 processor in the
system during shock and vibration situations. If these Intel enabled retention solutions are
used, the motherboard keep out zones and mounting hole requirements must be met. See the
®
Intel
•
The Boxed Intel
holes for the heatsink support structure as defined in the Intel
properly support the Boxed Intel
3.22
Electricals
3.22.1
Design Considerations
•
It is recommended that simulations be performed on the GTL+ bus to ensure that proper bus
timings and signal integrity are met, especially if the layout guideline recommendations in this
document are not followed.
•
It is recommended that simulations be performed to ensure proper timings and signal integrity
is met, especially if the non GTL+ (CMOS) layout guideline recommendations in this
document are not followed.
•
Verify the voltage range and tolerance of your VRM or onboard regulator adequately cover the
Vcc
CORE
•
Verify the maximum current value your VRM or on board regulator can support at Vcc
This should meet the value specified by the VRM 8.2 DC-DC Converter Specification.
•
Verify the voltage tolerance of your VRM or on board regulator at Vcc
the value specified by the VRM 8.2 DC-DC Converter Specification.
•
Adequate 5V and/or 3.3V decoupling should be provided for all components.
•
V
REF
divider. It should be decoupled to ground, to ensure an even better solution.
•
It is recommended that AC/DC analysis be performed to determine proper pull-up and pull-
down values.
®
Intel
440GX AGPset Design Guide
®
®
Pentium
II processor retention mechanism, retention mechanism attach mount
®
Pentium
II Datasheet for details.
®
®
Pentium
II processor requires the implementation of the heatsink support
requirements of the Slot 1 processor(s) is supported.
for the AGPset should be decoupled to VTT with 0.001mF capacitors at each voltage
®
®
Pentium
II processor fan/heatsink.
Design Checklist
®
®
Pentium
II Datasheet to
This should meet
CORE.
CORE.
3-37
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