Intel Cyclone 10 GX User Manual page 278

Figure 173. CTLE Frequency Response for DC Gain and AC Gain
Gain
(dB)
Gain
(dB)
5.1.2.1.5. Variable Gain Amplifier (VGA)
Cyclone 10 GX channels have a variable gain amplifier to optimize the signal
amplitude prior to the CDR sampling. VGA can only be operated in manual mode. VGA
gain can be selected through Quartus Assignment Editor or Quartus Setting File (qsf)
or the Avalon MM register. You must set VGA manually for all combinations of CTLE
modes.
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Intel Cyclone 10 GX Transceiver PHY User Guide
278
DC Gain
Control
5. Cyclone 10 GX Transceiver PHY Architecture
UG-20070 | 2018.09.24
AC Gain
Control
Frequency
Frequency
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