Chapter1
Introduction to the RocketIO GTX Transceiver
Overview
The RocketIO? GTX transceiver is a power-efficient transceiver for Virtex?-5 FPGAs. The GTX transceiver is highly configurable and tightly integrated with the programmable logic resources of the FPGA. It provides the following features to support a wide variety of applications:???
Current Mode Logic (CML) serial drivers/buffers with configurable termination,voltage swing, and coupling.
Programmable TX pre-emphasis, RX equalization, and linear and decision feedbackequalization (DFE) for optimized signal integrity.
Line rates from 750Mb/s to 6.5Gb/s, with optional 5x digital oversampling requiredfor rates between 150Mb/s and 750Mb/s. The nominal operation range of the sharedPMA PLL is from 1.5GHz to 3.25GHz. These are nominal values, see DS202: Virtex-5FPGA Data Sheet for specifications.
Optional built-in PCS features, such as 8B/10B encoding, comma alignment, channelbonding, and clock correction.
Fixed latency modes for minimized, deterministic datapath latency.
Beacon signaling for PCI Express? designs and Out-of-Band signaling includingCOM signal support for SATA designs.
RX/TX Gearbox provides header insertion and extraction support for 64B/66B and64B/67B (Interlaken) protocols.Receiver eye scan:
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Vertical eye scan in the voltage domain for testing purposesHorizontal eye scan in the time domain for testing purposes
The first-time user is recommended to read High-Speed Serial I/O Made Simple [Ref1], which discusses high-speed serial transceiver technology and its applications.
Table1-1 lists some of the standard protocols designers can implement using the GTX transceiver. The Xilinx? CORE Generator? tool includes a Wizard to automatically configure GTX transceivers to support one of these protocols or perform custom configuration (see Chapter2, “RocketIO GTX Transceiver Wizard”).
The GTX_DUAL tile offers a data rate range and features that allow physical layer support for various protocols as illustrated in Table1-1.
RocketIO GTX Transceiver User GuideUG198 (v3.0) October 30, 2009
Chapter 1:Introduction to the RocketIO GTX Transceiver
RocketIO GTX Transceiver User Guide
UG198 (v3.0) October 30, 2009
Chapter 2:RocketIO GTX Transceiver Wizard
RocketIO GTX Transceiver User Guide
UG198 (v3.0) October 30, 2009
FPGA可编程逻辑器件芯片XC2S15-6CS144C中文规格书
