Intel 31154 Wiring Lengths for Embedded 100 MHz Design, PCI-X Layout Guidelines, Lower AD Bus

Models: 31154

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Wiring Lengths for Embedded 100 MHz Design

PCI-X Layout Guidelines

7.2.2.1Embedded Intel® 31154 133 MHz PCI Bridge Application at 100 MHz

Figure 12 shows the PCI-X layout for a embedded 133 MHz design. In this application the 31154 is driving three loads. Table 17 shows the corresponding wiring lengths to use as a reference.

Figure 12. Embedded Intel® 31154 133 MHz PCI Bridge Design 100 MHz PCI-X Layout

 

W1

W2

W3

 

 

 

PCI

 

 

 

Agent 1

I/O Buffer

IDSEL

 

 

 

W4

 

W5

 

 

W6

 

 

 

 

PCI Agent 2

 

 

W7

 

 

 

 

PCI Agent 3

 

 

 

B3062-02

Table 17.

Wiring Lengths for Embedded 100 MHz Design

 

 

 

 

 

 

 

 

 

 

Segment

Lower AD Bus

Upper AD Bus

Units

 

 

 

 

 

 

 

Minimum Length

Maximum Length

Minimum Length

Maximum Length

 

 

 

 

 

 

 

 

 

W1

3.5

6

3.5

6.0

inches

 

 

 

 

 

 

 

 

W2

2.5

5.0

1.5

4.0

inches

 

 

 

 

 

 

 

 

W3

0.75

1.5

1.75

2.75

inches

 

 

 

 

 

 

 

 

W4

0.1

0.1

inches

 

 

 

 

 

 

 

 

W5

1.725

1.725

inches

 

 

 

 

 

 

 

 

W6

3.25

6.5

3.25

6.75

inches

 

 

 

 

 

 

 

 

W7

3.25

6.5

3.25

6.75

inches

 

 

 

 

 

 

 

48

Intel® 31154 133 MHz PCI Bridge Design Guide Design Guide

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Intel 31154 manual Wiring Lengths for Embedded 100 MHz Design, PCI-X Layout Guidelines, Lower AD Bus, Upper AD Bus