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Ixiasoft
2.14. Transceiver and Serial Protocols
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:
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 .