Intel Embedded Intel 31154 133 MHz PCI Bridge Application at 66 MHz, PCI-X Layout Guidelines

Models: 31154

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7.2.3.1Embedded Intel® 31154 133 MHz PCI Bridge Application at 66 MHz

PCI-X Layout Guidelines

7.2.3.1Embedded Intel® 31154 133 MHz PCI Bridge Application at 66 MHz

Figure 14 shows an 31154 in a stand-alone embedded application. In this application the 31154 is shown driving four loads. Additional loads might be possible with careful simulation. Table 19 shows the corresponding wiring lengths to use as a reference.

Figure 14. Embedded Intel® 31154 133 MHz PCI Bridge Wiring for 66 MHz

 

W1

W2

 

 

PCI Agent 1

I/O Buffer

IDSEL

 

 

 

 

W3

W4

 

W5

W6

 

 

PCI Agent 2

 

W7

W8

 

 

PCI Agent 3

 

W9

W10

 

 

PCI Agent 4

 

 

B3247-01

Table 19.

Wiring Lengths for Embedded 66 MHz Design

 

 

 

 

 

 

 

 

 

 

 

Lower AD Bus

Upper AD Bus

 

 

Segment

 

 

 

 

Units

 

 

Minimum Length

Maximum Length

Minimum Length

Maximum Length

 

 

 

 

 

 

 

 

 

W1

5

7

5

7

inches

 

 

 

 

 

 

 

 

W2

0.75

1.5

1.75

2.75

inches

 

 

 

 

 

 

 

 

W3

0.1

0.1

inches

 

 

 

 

 

 

 

 

W4

1.725

1.725

inches

 

 

 

 

 

 

 

 

W5

1

1

1

1

inches

 

 

 

 

 

 

 

 

W6

0.75

1.5

1.75

2.75

inches

 

 

 

 

 

 

 

 

W7

1

1

1

1

inches

 

 

 

 

 

 

 

 

W8

0.75

1.5

1.75

2.75

inches

 

 

 

 

 

 

 

 

W9

1

1

1

1

inches

 

 

 

 

 

 

 

 

W10

0.75

1.5

1.75

2.75

inches

 

 

 

 

 

 

 

Intel® 31154 133 MHz PCI Bridge Design Guide Design Guide

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Intel manual Embedded Intel 31154 133 MHz PCI Bridge Application at 66 MHz, Wiring Lengths for Embedded 66 MHz Design