Intel Arria 10 User Manual page 456

Figure 230. Channel Pulse Response
V
Note: The pulse at the output of the channel shows a long decaying tail. Frequency-
dependent losses and quality degradation affects other signals.
Supported modes for DFE:
• Disabled Mode:
— DFE disabled mode is similar to DFE manual mode, except all DFE tap values
in this mode are set to zero. DFE tap values can be set in Assignment
Editor/.qsf or using Avalon MM interface.
• Manual Mode:
— In this mode, manual DFE tap values can be set in Assignment Editor/.qsf or
using Avalon MM interface.
• Adaptation Enabled Mode:
— In this adaptation mode, DFE tap values are controlled by the Adaptive
Parametric Tuning Engine. This mode uses the converged DFE tap values given
by the Adaptive Parametric Tuning Engine.
Related Information
How to Enable CTLE and DFE
5.1.2.1.7. How to Enable CTLE and DFE
Table 252. Summary of Receiver Equalization Modes
Receiver Equalization
CTLE adaptation mode
DFE adaptation mode
Number of fixed DFE taps
Follow these steps to trigger DFE adaptation:
® ®
Intel Arria 10 Transceiver PHY User Guide
456
Signal at the
Channel Input
Transmission Medium
on page 456
5. Arria 10 Transceiver PHY Architecture
Signal at the
Channel Output
Modes
Manual, Triggered (use the triggered mode for PCIe Gen3
only)
Adaptation enabled, Manual, Disabled
3, 7, 11
UG-01143 | 2018.06.15
Region of Influence
for Fixed Taps
t
1 UI