F-Tile Interlaken Intel® FPGA IP Design Example User Guide

ID 683069
Date 12/04/2023
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2.2. Analog Parameters Settings

For Intel® Quartus® Prime Pro Edition Software version 23.2 and earlier versions, F-tile transceiver analog parameters are set through Intel Quartus Prime software settings file (.qsf).

From Intel® Quartus® Prime Pro Edition Software version 23.3 onwards, a GUI based mechanism is implemented to set the analog parameters of F-tile transceivers. The figures below show the FGT and FHT Analog Parameters Tab.
Figure 7. Analog Parameters Tab for FGT
Figure 8. Analog Parameters Tab for FHT

When you are using the development kit, the default analog value may not match your hardware setup. It is recommended that you use the following settings when generating example design for Intel Agilex 7 FPGA I-Series Transceiver-SoC Development Kit.

Table 6.   Recommended Analog Settings for FGT Designs
Parameter Value
FGT TXEQ Post Tap 1, 1.0 step size 0
FGT TXEQ Main Tap, 1.0 step size 35
FGT TXEQ Pre Tap 1, 1.0 step size 5
FGT TXEQ Pre Tap 2, 1.0 step size 0
Select FGT RX Onchip Termination RX_ONCHIP_TERMINATION_R_2 (100ohms)
Enable FGT RX AC Couple ENABLE
Enable FGT VSR mode
  • VSR_MODE_DISABLE (applied for designs with data rate as 6.25Gbps, 10.3125Gbps and 12.5Gbps)
  • VSR_MODE_LOW_LOSS (applied for designs with data rate as 25.78125Gbps, 53.125Gbps, and 56.25Gbps))
Table 7.   Recommended Analog Settings for FHT Designs
Simulator Instructions
Enable FHT TX P&N Invert Enabled
Enable FHT TXOUT Tristate Disabled
Select FHT TX Termination TXTERM_OFFSET_P0 (90ohms)
Enable FHT RX P&N Invert Enabled
Select FHT RX Termination RXTERM_OFFSET_P0 (90ohms)
Select FHT external AC Cap EXTERNAL_AC_CAP_ENABLE
Post-Cursor 4, 0.25 step size 0.0
Post-Cursor 3, 0.25 step size 0.0
Post-Cursor 2, 0.25 step size 0.0
Post-Cursor 1, 0.5 step size -2
Main-Cursor, 0.5 step size 18
Pre-Cursor 1, 0.5 step size -4
Post-Cursor 2, 0.25 step size -2
Post-Cursor 3, 0.25 step size 0.0