Cyclone® V to Agilex™ 5 Device Migration Guide

ID 787947
Date 9/30/2024
Public
Document Table of Contents

2.14. Transceiver and Serial Protocols

Agilex™ 5 devices significantly uplift the transceiver capability and performance from Cyclone® V devices. Hence, you cannot directly migrate existing Cyclone® V transceiver designs to Agilex™ 5 devices.

The following table outlines the key differences and their associated guidance that you must be aware of when upgrading to use Agilex™ 5 GTS transceivers:

Table 24.  Key Transceiver Feature Differences and Associated Guidance
Key Differences Cyclone® V Transceivers Agilex™ 5 GTS Transceivers Guidance for upgrading to Agilex™ 5 GTS Transceivers
Hardened block resources PCS (8b/10b-based)

PCS (64b/66b-based), FEC (Firecode, Reed-Solomon), and 10G/25G Ethernet HIP

Create user-logic if 8b/10b-based PCS is required or use Intel protocol IPs that include solutions for 8b/10b-PCS (for example, Triple-Speed Ethernet for Intel FPGA IP).
Channel placement considerations Based on hard IP (PCIe) availability and clocking resources (transmit PLL and clock line). Based on hard IP (PCIe, Ethernet, USB3.1) availability and bonded configuration. Identify a fixed location for placing channels in bonded configuration (up to x8).
Clocking flexibility Channels must share either CMU, fPLL, or channel PLL with consideration of clock-line availability.

Each channel has its own TX PLL. One system PLL is available per bank.

No TX PLL sharing required across the channels. If multiple channels use the same rate, each channel is driven by its own TX PLL sharing the same REFCLK source.
Reference for calibration circuit Via RREF pair to external resistor Via RCOMP pair to external resistor. Identify the external resistor value differences.

The differences listed in the above table are not exhaustive and are meant to highlight specific Cyclone® V transceiver features that are different in Agilex™ 5 GTS transceiver. For detailed information about the new features enabled in Agilex™ 5 GTS transceiver, refer to the GTS Transceiver PHY User Guide .