GTS Transceiver PHY User Guide

ID 817660
Date 7/08/2024
Public
Document Table of Contents

3.9. Bonding Implementation

Bonding enables you to minimize skew between channels. The GTS PMA/FEC Direct PHY Intel FPGA IP only supports TX bonding. The IP does not support RX bonding. The IP supports TX bonding of x2, x4, x6, and x8 PMA channels for PMA direct mode and it supports x2 and x4 PMA channel bonding for PCS direct mode.
Bonding is automatically enabled when more than one PMA lane is enabled in the GTS PMA/FEC Direct PHY Intel FPGA IP. The Quartus® Prime Pro Edition software implements bonding automatically. Following table shows the parameter setting to achieve bonding or no bonding.
Table 59.  Bonding Implementation
Bonding Implementation Number of PMA Lanes
No Bonding = 1
Bonding > 1
When bonding is enabled and the Datapath clocking mode is set to PMA, select Word Clock for the Selected tx_clkout clock source parameter in the TX Clock Options group box and also for the Selected rx_clkout clock source in the RX Clock Options group box.

When bonding is enabled and the Datapath clocking mode is set to System PLL, select either Sys PLL Clock or Sys PLL Clock with division by 2 for the Selected tx_clkout clock source and Selected rx_clkout clock source parameters, respectively.