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Intel
®
440GX AGPset Design Guide
2-7
Motherboard Layout and Routing Guidelines
2.3.3.2 Single Processor Recommended Trace Lengths
Single processor trace length recommendations are summarized in Table 2-1. The recommended
lengths are derived from the parametric sweeps and Monte Carlo analysis described in the
following section.
NOTE:
1.
Refer to the
Intel
®
Pentium
®
II
Processor Specification Update
(
order number 243337
)
; Specificall
y
, erratum
#42: workaround L1=4.5”.
Intel strongly recommends running analog simulations using the available I/O buffer models
together with layout information extracted from your specific design. Simulation will confirm that
the design adheres to the guidelines.
Table 2-1. Recommended Trace Lengths for Single Processor Design
Trace Minimum Length Maximum Length
L1 1.50” 6.75”
1
L3 0.00” 1.50”
L4 0.00” 2.50”
2
Figure 2-8. Solution Space for Single Processor Design (Based on Results of Parametric
Sweeps)
0123456789101112
0
1
2
L2 [in]
L3 [in]
PASS
FAIL