2020.05.15 |
Made the following change:
- Removed OFF as an option in the "Transmitter Buffer" figure and Programmable Transmitter On-Chip Termination (OCT).
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2020.05.08 |
Made the following change:
- Added the receiver pin I/O standards.
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2019.11.04 |
Made the following changes to How to Enable CTLE and DFE:
- Changed step #1 to, "Request user access to the internal configuration bus by writing 0x2 to offset address 0x0[1:0]."
- Changed step #5 to, "Release the internal configuration bus to PreSICE by writing 0x3 to offset address 0x0[1:0]."
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2018.06.15 |
Made the following changes:
- Changed the AC gain settings for high bandwidth and medium bandwidth mode in the "High Gain Mode" section.
- Added a note about bit slipping to the "RX Gearbox, RX Bitslip, and Polarity Inversion" section.
- Clarified the description of DC gain circuitry in the "Continuous Time Linear Equalization (CTLE)" section.
- Clarified the description of CTLE manual mode in the "High Data Rate Mode" section.
- Removed the Channel Loss Compensation column from the "Pre-Emphasis Taps" table.
- Updated Serial Loopback Path and Reverse Serial Loopback Path/Pre CDR figures and their notes.
- Changed the instruction in step 1 of the "How to Enable CTLE and DFE" section.
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2016.10.31 |
Made the following changes:
- Added a note below the diagram "Diagnostic Loopback Path/Pre CDR" saying "TX pre-emp is not supported in pre-CDR loopback. TX pre-emp is recommended to set to zero for all taps."
- "Idle OS Deletion" description updated to "Deletion of Idles occurs in groups of four OS (when there are two consecutive OS) until the rx_enh_fifo_pfull flag deasserts".
- Removed square wave pattern generator.
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2015.05.02 |
Made the following changes:
- Updated the configuration methods for the CTLE,and DFE schemes in the Arria 10 PMA Architecture section.
- Removed a signal in the "Gen3 PCS Block Diagram" in the Arria 10 PCI Express Architecture section.
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2015.12.18 |
Made the following changes:
- Updated the configuration methods for the CTLE, DFE, and adaptation schemes in the Arria 10 PMA Architecture section.
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2015.11.02 |
Made the following changes to the PMA Architecture section:
- Updated "Channel Pulse Response" figure in the Decision Feedback Equalization (DFE) section.
- Updated the value for the "Number of fixed DFE taps" in the Equalization table in the PMA Parameters section.
Made the following changes to the Enhanced PCS Architecture section:
- Updated Phase Compensation Mode and Basic Mode sections.
- Added 64B/66B Encoder Reset Condition section.
- Updated TX Gearbox, TX Bitslip and Polarity Inversion sections.
- Updated RX Bitslip in RX Gearbox, RX Bitslip, and Polarity Inversion figure.
- Added “block synchronization” in Enhanced PCS introduction note.
- Updated Enhanced PCS TX FIFO section.
- Updated reference link for TX Phase Compensation Mode section.
- Updated TX Register Mode description.
- Updated Interlaken Frame Generator section description.
- Updated 64B/66B Encoder and Transmitter State Machine section title.
- Updated PRBS Pattern Generator (Shared between Enhanced and Standard) title
- Updated Square Wave Pattern Generator (Shared between Enhanced and Standard)
- Updated RX Register Mode description.
Made the following changes to the Standard PCS Architecture section:
- Updated the Byte Serializer section for Serialize x2 and x4 modes.
- Added new figures for 8B/10B Encoder Bit and Byte Reversal features.
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2015.05.11 |
Made the following changes to the PMA Architecture section:
Made the following changes to the Enhanced PCS Architecture section:
- Updated pattern generators (PRBS, Square Wave and PRP), PRBS Checker and PRP Verifier sections.
- Revised the descriptions of TX FIFO Fast Register Mode.
- Changed the title and descriptions in "Enhanced PCS Pattern Generators".
- Added new sections for "PRBS Pattern Generator (Shared between Enhanced and Standard PCSes)", "Square Wave Pattern Generator (Shared between Enhanced and Standard PCSes)", and "Pseudo-Random Pattern Generator."
- Changed sub title "PRBS Verifier" to "PRBS Checker" and changed their descriptions.
- Changed descriptions in "PRP Verifier".
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2014.12.15 |
Made the following changes to the Enhanced PCS Architecture section:
- Added PRBS7 Generator to support 64-bit width only.
- Updated the rule for tx_enh_data_valid control signal when TX FIFO is used in phase compensation mode.
Made the following changes to the PCI Express Gen3 PCS Architecture section:
- Updated TX FIFO in Transmitter Datapath.
- Changed the Standard PCS data rate from 12.5 Gbps to 12 Gbps.
Made the following changes to the Standard PCS Architecture section:
- Changed the Standard PCS data rate from 12.5 Gbps to 12 Gbps.
Made the following changes to the PMA Architecture section:
- Added High Speed Differential I/O and Power Distribution Network to the Transmitter Buffer circuitry.
- Added Power Distribution Network induced Inter-Symbol Interference compensation.
- Replaced the figures related to Programmable Pre Emphasis with a link to Pre Emphasis and Output Swing Settings Estimator.
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2014.08.15 |
Made the following changes to the PCI Express Gen3 PCS Architecture section:
- Corrected the low latency mode cycles of latency in the TX FIFO (Shared with Standard and Enhanced PCS).
Made the following changes to the Standard PCS Architecture section:
- Removed the features not supported by 8B/10B Decoder.
- Changed the description of TX FIFO to include the depth of the TX FIFO.
- Updated the description of Polarity Inversion feature to include how to enable Polarity Inversion.
- Updated the description of Pseudo-Random Binary Sequence (PRBS) Generator on the supported PCS-PMA interface widths.
- Changed the value for Supported Word Aligner Pattern Lengths for Bitslip Mode when the PCS-PMA Interface Width is 8 in Table 5-8 Word Aligner Pattern Length for Various Word Aligner Modes.
- Changed the description of RX FIFO to include the depth of the RX FIFO.
- Changed the RX Word Aligner pattern length for PCS-PMA interface width 8 in Bitslip Mode.
Made the following changes to the Enhanced PCS Architecture section:
- Changed references from MegaWizard to Parameters Editor.
Made the following changes to the PMA Architecture section:
- Added 2nd post-tap and pre-tap Pre-Emphasis signals .
- Updated DFE and CTLE modes of operation and Use Models.
- Added new sections on How to Enable CTLE and How to Enable DFE.
- Changed max data rate for GT channels to 25.8 Gbps in the Receiver Buffer CTLE section.
- Updated Receiver Buffer figure by adding and modifying Adaptive Parametric Tuning Engine to include CDR and DFE.
- Updated VGA section that includes VGA Frequency response for different gain settings.
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2013.12.02 |
Initial release. |