Intel® Arria® 10 Transceiver PHY User Guide

ID 683617
Date 9/15/2023
Document Table of Contents
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4.7. Timing Constraints for Bonded PCS and PMA Channels

For designs that use TX PMA and PCS Bonding, the digital reset signal (tx_digitalreset) to all TX channels within a bonded group must meet a maximum skew tolerance imposed by physical routing. This skew tolerance is one-half the TX parallel clock cycle (tx_clkout). This requirement is not necessary for TX PMA Bonding or for RX PCS channels.
Note: If the design is not able to meet the maximum skew tolerance requirement with a positive margin, Intel® recommends reassigning the channels locations that are not adjacent to the PCIe Hard IP block.
Figure 222. Physical Routing Delay Skew in Bonded Channels

You must provide a Synopsys Design Constraint (SDC) for the reset signals to guarantee that yo