Microchip Technology Microsemi UG0677 - Figure 98 Example of Optimize DFE

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Signal Integrity Conditioning

Microsemi Proprietary and Confidential UG0677 User Guide Revision 9.0 120

5.4.3.2 SmartDebug Decision Feedback Equalization Support

SmartDebug is used to adapt the DFE coefficients to optimize the settings for the overall signal integrity

at the receiver for the system under test environment. On-demand, the SmartDebug utility runs the

adaptive algorithm to of the DFE filter to resolve the TAP values of the DFE coefficients. This can be

applied on any XCVR design greater than 5G. The routine is invoked from the Optimize DFE in the GUI.

The TXPLL needs to be locked to begin DFE procedure. This runs the algorithm to set the optimal

settings. The optimized settings remains intact until the next DEVRSTn or power cycle. The following

figure shows the Optimize DFE window.

Figure 98 • Example of Optimize DFE

For more information about Optimized DFE feature, see UG0773: PolarFire FPGA SmartDebug User

Guide.