Spci Address/Data Signals With Idsel Group Guidelines - Intel IXP28XX Manual

Table 44.
Hardware Design Guide
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Table 44 provides routing guidelines for the SPCI address/data signals with IDSEL group
parameters.

SPCI Address/Data Signals with IDSEL Group Guidelines

Parameter
Signal Group
Topology
Reference Plane
Characteristic Trace Impedance
Nominal Trace Width
Nominal Trace Separation
Spacing to Other Groups
Trace Length A
Trace Length B
Trace Length C
Trace Length D
Trace Length E
Trace Length F
Trace Length G
Trace Length H
Trace Length I
Trace Length J
Trace Length K
Trace Length L
Resistor R
S
Maximum Via Count per Signal
IXP28XX Network Processor
Routing Guidelines
SPCI Address/Data with IDSEL
Daisy Chain
Dual-referenced, PWR–SIG–GND
60 Ω ± 10%
3.5 mils
9 mils
20 mils
Maximum = 2500 mils
Maximum = 1800 mils
Maximum = 200 mils
Maximum = 5200 mils
Maximum = 500 mils
Maximum = 7000 mils
Maximum = 200 mils
Maximum = 4500 mils
Maximum = 200 mils
Maximum = 1200 mils
Maximum = 150 mils
Maximum = 2000 mils
84 Ω ± 10%
12 vias
PCI
119