GTS Transceiver PHY User Guide: Agilex™ 3 FPGAs and SoCs

ID 848344
Date 8/04/2025
Public
Document Table of Contents

3.10. Bonding Implementation

Bonding enables you to minimize skew between channels. The GTS PMA/FEC Direct PHY IP only supports TX bonding. The IP does not support RX bonding. The IP supports TX bonding of x2 and x4 PMA channels for PMA direct mode and PCS direct mode.
Bonding is automatically enabled when more than one PMA lane is enabled in the GTS PMA/FEC Direct PHY IP. The Quartus® Prime Pro Edition software implements bonding automatically. Following table shows the parameter setting to achieve bonding or no bonding.
Table 62.  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.