Intel 31154 manual Wiring Lengths for Embedded 133 MHz Design, Lower AD Bus Upper AD Bus

PCI-X Layout Guidelines

7.2.1.1Intel® 31154 133 MHz PCI Bridge Embedded Application at 133 MHz

Figure 10 shows the 31154 application in a stand-alone embedded application. In this application the 31154 is shown driving a single PCI device. Table 15 shows the corresponding wiring lengths to use as a reference.

Figure 10. Embedded Intel® 31154 133 MHz PCI Bridge Design 133 MHz PCI-X Layout

	W1	W2
		PCI
		Agent
I/O Buffer	IDSEL
	W3	W4
		B3058-01

Table 15.	Wiring Lengths for Embedded 133 MHz Design
		Lower AD Bus		Upper AD Bus
	Segment					Units
		Minimum	Maximum	Minimum	Maximum
		Length	Length	Length	Length
	W1	5.5	10.5	4.5	9.5	inches
	W2	0.75	1.5	1.75	2.75	inches
	W3	0.1	0.1	–	–	inches
	W4	1.725	1.725	–	–	inches

46 Intel® 31154 133 MHz PCI Bridge Design Guide Design Guide