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PEX 8612-AA
PLX Technology PEX 8612-AA Manuals
Manuals and User Guides for PLX Technology PEX 8612-AA. We have
1
PLX Technology PEX 8612-AA manual available for free PDF download: Hardware Design Manual
PLX Technology PEX 8612-AA 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
Introduction
7
Switch Interfaces
7
PCI Express Link Interface
8
Figure 1. Sample PCI Express Link Block Diagram
8
Transmitter
9
Figure 2. Single-Ended Versus Differential Voltage
9
Receiver
11
Table 1. Receiver Equalization Settings
11
Reference Clock
12
Channel
13
Figure 3. Transport Delay Delta
13
Figure 4. PEX 8612 Refclk Circuitry
13
NT Function
14
Figure 5. Enable NT Function with NT Strapping Balls
14
Figure 6. Disable NT Function with NT Strapping Balls
14
Hot Plug Controller Interface
15
Figure 7. PHPC Circuit Block Diagram
15
JTAG Interface
16
Figure 8. JTAG Interface Block Diagram
16
C Interface
17
PCI Express Port Good Indicators
17
Figure 9. I 2 C Interface Block Diagram
17
Table 2. PEX 8612 LED On/Off Patterns, by State
17
Strapping Balls
18
Table 3. Configuration Strapping Balls
18
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 10. Power Balls and Capacitor Placement
20
Power Sequencing
21
Board-Level De-Coupling
22
Figure 11. Power Plane Impedance Versus Frequency
22
Figure 12. Capacitor Footprint Effects on Series Inductance
23
PCB Layout and Layer Stackup Considerations
24
BGA Routing Escape and De-Coupling Capacitor Placement
24
Figure 13. Top Layer BGA Layout and Routing Escape
25
Figure 14. Inside Layer BGA Layout and Routing Escape
25
Add-In Board Routing
26
Figure 15. Add-In Board Routing to PCI Express Gold Fingers
26
System Board Routing
27
Midbus Routing
27
Figure 16. System Board Routing to PCI Express Slot
27
Figure 17. PCI Express Midbus Routing Example
27
PCB Layer Stackup Considerations
28
References
29
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