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54 Intel
®
31154 133 MHz PCI Bridge Design Guide Design Guide
PCI-X Layout Guidelines
Figure 16. PCI-X Data Bus PICMG 1.2 Style Backplane
Table 20. Wiring Lengths for PICMG 1.2 Backplane
Segment
AD Bus
Units
Minimum Length Maximum Length
W1 0.75 2.75 inches
W2 0.75 2.75 inches
W3 0.75 2.75 inches
W4 0.75 2.75 inches
W5 0.75 2.75 inches
W6 0.75 2.75 inches
W7 0.75 2.75 inches
W8 0.75 2.75 inches
W9 1.2 1.2 inches
W10 0.8 0.8 inches
W11 0.8 0.8 inches
W12 0.8 0.8 inches
W13 0.8 0.8 inches
W14 0.8 0.8 inches
W15 0.8 0.8 inches
B3331-01
Intel
®
31154 133 MHz
PCI Bridge
Device
Card Stub
Edge Connector
Backplane
Slot1
W1
Slot2
W2
W9 W10
Slot3
W3
W11
Slot4
W4
W12
Slot5
W5
W13
Slot6
W6
W14
Slot7
W7
W15
Slot8
W8