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PEX 8647-AA
PLX Technology PEX 8647-AA Manuals
Manuals and User Guides for PLX Technology PEX 8647-AA. We have
1
PLX Technology PEX 8647-AA manual available for free PDF download: Quick Start Manual
PLX Technology PEX 8647-AA Quick Start Manual (23 pages)
Brand:
PLX Technology
| Category:
Switch
| Size: 0 MB
Table of Contents
Table of Contents
3
Preface
4
Notice
4
Revision History
4
Introduction
5
Switch Interfaces
5
PCI Express Link Interface
6
Figure 1. Sample PCI Express Link Block Diagram
6
Transmitter
7
Figure 2. Single-Ended Versus Differential Voltage
7
Receiver
9
Table 1. Receiver Equalization Settings
9
Reference Clock
10
Channel
11
Figure 3. Transport Delay Delta
11
Figure 4. PEX 8647 Refclk Circuitry
11
JTAG Interface
12
Figure 5. JTAG Interface Block Diagram
12
C Interface
13
PCI Express Port Good Indicators
13
Figure 6. I C Interface Block Diagram
13
Table 2. PEX 8647 LED On/Off Patterns, by State
13
Strapping Balls
14
Table 3. Configuration Strapping Balls
14
Table 4. STRAP_RESERVED Ball External Pull-Up/Pull-Down Resistor Requirements
14
GPIO Balls
15
Power Supplies, Sequencing, and De-Coupling
15
Power Supplies
15
Figure 7. Power Balls and Capacitor Placement
15
Power Sequencing
16
Board-Level De-Coupling
17
Figure 8. Power Plane Impedance Versus Frequency
17
Figure 9. Capacitor Footprint Effects on Series Inductance
18
PCB Layout and Layer Stackup Considerations
19
BGA Routing Escape and De-Coupling Capacitor Placement
19
Figure 10. Top Layer BGA Layout and Routing Escape
20
Figure 11. Bottom Layer BGA Layout, Escape, and De-Coupling Capacitor Placement
20
Add-In Board Routing
21
System Board Routing
21
Figure 12. Add-In Board Routing to PCI Express Gold Fingers
21
Figure 13. System Board Routing to PCI Express Slot
21
Midbus Routing
22
PCB Layer Stackup Considerations
22
Figure 14. PCI Express Midbus Routing Example
22
References
23
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