DS878 Datasheet, PDF (2/8 Pages) Xilinx, Inc – LogiCORE IP ChipScope Pro IBERT for 7 Series GTZ Transceivers (v2.0)

LogiCORE IP ChipScope Pro IBERT for 7 Series GTZ Transceivers (v2.0)
Applications
The IBERT core is designed to be used in any application that requires verification or evaluation of 7 series FPGA
GTZ transceivers.
Functional Description
The IBERT core provides a broad-based Physical Medium Attachment (PMA) evaluation and demonstration family
for 7 series FPGA GTZ transceivers. Parameterizable to use different GTZ transceivers and clocking topologies, the
IBERT core can also be customized to use different line rates, reference clock rates, and logic widths. Data pattern
generators and checkers are included for each GTZ transceiver desired, giving many different Pseudo-random
binary sequence (PRBS) and clock patterns to be sent over the channels. In addition, the configuration and tuning
of the GTZ transceivers is accessible through logic that communicates to the DRP port of the GTZ transceiver, in
order to change attribute settings, as well as registers that control the values on the ports. At run-time, the
ChipScope Analyzer tool communicates to the IBERT core through JTAG, using the Xilinx cables and proprietary
logic that is part of the IBERT core.
GTZ Transceiver Features
The IBERT core is designed for Physical Medium Attachment (PMA) evaluation and demonstration. All the major
PMA features of the GTZ transceiver are supported and controllable, including:
• TX pre-emphasis and post-emphasis
• TX differential swing
• RX equalization
• Decision Feedback Equalizer (DFE)
• Phase-Locked Loop (PLL) Divider settings
Some of the Physical Coding Sublayer (PCS) features offered by the transceiver are outside the scope of IBERT,
including:
• Clock Correction
• Channel Bonding
• 8B/10B, 64B/66B, or 64B/67B encoding
• TX or RX Buffer Bypass
PLL Configuration
For each serial transceiver, two LC tank PLLs are present, one for RX, and one for TX. There are no shared PLLs
amongst channels in the OCTAL.
Figure 1 shows a GTZ OCTAL in a 7 series device. The GTZ channels has the serial transceiver and CPLL units.
DS878 December 18, 2012
www.xilinx.com
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Product Specification