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18 www.xilinx.com Ethernet 1000BASE-X PCS/PMA or SGMII v9.1
UG155 March 24, 2008
Preface: About This Guide
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• Chapter 11, “Dynamic Switching of 1000BASE-X and SGMII Standards” provides
general guidelines for using the core to perform dynamic standards switching
between 1000BASE-X and SGMII.
• Chapter 12, “Constraining the Core” defines the constraint requirements of the core.
• Chapter 13, “Interfacing to Other Cores” describes additional design considerations
associated with implementing the core with the 1-Gigabit Ethernet MAC and Tri-
Mode Ethernet MAC cores.
• Chapter 14, “Special Design Considerations” describes additional design
considerations associated with implementing the core.
• Chapter 15, “Implementing the Design”describes how to simulate and implement
your design containing the core.
• Appendix A, “Core Verification, Compliance, and Interoperability” describes how the
core was verified.
• Appendix B, “Core Latency” defines the latency of the core.
• Appendix C, “Calculating the DCM Fixed Phase Shift Value” instructs the user about
how to calculate the system timing requirements when using DCMs with the core.
• Appendix D, “1000BASE-X State Machines” serves as a reference for the basic
operation of the 1000BASE-X IEEE 802.3 clause 36 transmitter and receiver state
machines.
• Appendix E, “Rx Elastic Buffer Specifications” describes the depth of the Rx Elastic
Buffers which are available with the core. The size of the buffer is related to the
maximum frame size which the core can accommodate.
• Appendix F, “Debugging Guide” provides information for debugging the core within
a system.
Conventions
This document uses the following conventions. An example illustrates each convention.
Typographical
The following typographical conventions are used in this document.
Convention Meaning or Use Example
Courier font
Messages, prompts, and
program files that the system
displays
speed grade: - 100
Courier bold
Literal commands you enter in
a syntactical statement
ngdbuild
design_name
Italic font
References to other manuals See the User Guide for details.
Emphasis in text
If a wire is drawn so that it
overlaps the pin of a symbol,
the two nets are not connected.
Dark Shading
Items that are not supported
or reserved
This feature is not supported