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ExpressLane PEX 8624-AA
PLX Technology ExpressLane PEX 8624-AA Manuals
Manuals and User Guides for PLX Technology ExpressLane PEX 8624-AA. We have
1
PLX Technology ExpressLane PEX 8624-AA manual available for free PDF download: Quick Start Hardware Design Manual
PLX Technology ExpressLane PEX 8624-AA Quick Start Hardware Design Manual (29 pages)
Brand:
PLX Technology
| Category:
Switch
| Size: 0 MB
Table of Contents
Table of Contents
3
Preface
5
Notice
5
Revision History
5
1 Switch Interfaces
7
Introduction
7
Figure 1. Sample PCI Express Link Block Diagram
8
Figure 2. Single-Ended Versus Differential Voltage
9
Transmitter
9
Receiver
11
Table 1. Receiver Equalization Settings
11
Reference Clock
12
Channel
13
Figure 3. Transport Delay Delta
13
Figure 4. PEX 8624 Refclk Circuitry
13
PCI Express Link Interface
8
Figure 5. Enable NT Function with NT Strapping Balls
14
Figure 6. Disable NT Function with NT Strapping Balls
14
NT Function
14
Figure 7. PHPC Circuit Block Diagram
15
Hot Plug Controller Interface
15
Figure 8. SHPC Interface to PEX 8624 Block Diagram
16
Figure 9. JTAG Interface Block Diagram
17
JTAG Interface
17
C Interface
18
Figure 10. I C Interface Block Diagram
18
PCI Express Port Good Indicators
18
Table 2. PEX 8624 LED On/Off Patterns, by State
18
Strapping Balls
19
Table 3. Configuration Strapping Balls
19
Table 4. STRAP_RESERVED Ball External Pull-Up/Pull-Down Resistor Requirements
19
GPIO Balls
20
Power Supplies, Sequencing, and De-Coupling
20
Power Supplies
20
Figure 11. Power Balls and Capacitor Placement
20
Power Sequencing
21
Board-Level De-Coupling
22
Figure 12. Power Plane Impedance Versus Frequency
22
Figure 13. Capacitor Footprint Effects on Series Inductance
23
2 PCB Layout and Layer Stackup Considerations
24
BGA Routing Escape and De-Coupling Capacitor Placement
24
Figure 14. Top Layer BGA Layout and Routing Escape
25
Figure 15. Inside Layer BGA Layout and Routing Escape
25
Add-In Board Routing
26
Figure 16. Add-In Board Routing to PCI Express Gold Fingers
26
System Board Routing
27
Midbus Routing
27
Figure 17. System Board Routing to PCI Express Slot
27
Figure 18. PCI Express Midbus Routing Example
27
PCB Layer Stackup Considerations
28
3 References
29
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