7.2.1Single Slot at 133 MHz
Figure 9 shows one of the chipset PCI AD lines connected through the W1 and W12 line segments to a single-slot connector through the W13 line segment to the 31154. This AD line is also used as an IDSEL line from line segment W14 to a resistor through W15 to the PCI connector. The other end of the PCI connector IDSEL line connects through W16 to the 31154 IDSEL line input buffer.
Figure 9. Single-Slot Point-to-Point Topology
W1 | W12 |
| W13 |
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| PCI | PCI Agent 1 |
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| Connector | |
W14 | W15 | W16 | |
I/O Buffer |
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| Slot 1 |
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Note: Stub lengths are represented by W#s.
Table 14. | Wiring Lengths for 133 MHz Slot |
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| Lower AD Bus | Upper AD Bus |
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| Segment |
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| Minimum | Maximum | Minimum | Maximum | ||
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| Length | Length | Length | Length |
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| W1 + W12 | 5.5 | 10.5 | 4.5 | 9.5 | inches |
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| W13 | 0.75 | 1.5 | 1.75 | 2.75 | inches |
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| W14 | 0.1 | 0.1 | – | – | inches |
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| W15 | 0.6 | 0.6 | – | – | inches |
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| W16 | 1.125 | 1.125 | – | – | inches |
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Intel® 31154 133 MHz PCI Bridge Design Guide Design Guide | 45 |
