Intel Cyclone 10 GX User Manual page 279

5. Cyclone 10 GX Transceiver PHY Architecture
UG-20070 | 2018.09.24
Figure 174. VGA Frequency Response for Different Gain Settings
Related Information
How to Enable CTLE
5.1.2.1.6. How to Enable CTLE
Table 164. Summary of Receiver Equalization Modes
Receiver Equalization
CTLE adaptation mode
Configuration Methods
Configure the modes using one of the following methods:
Method 1 - Using Cyclone 10 GX Transceiver Native PHY IP Core
1. Select the CTLE mode in the RX PMA tab of the PHY IP Core
2. Compile the design
3. If the CTLE is in Manual mode, set the CTLE gain value using the assignment
editor/Quartus Settings File (.qsf). Then, recompile the design to make these
values effective.
Refer to Analog Parameter Settings for more details about Receiver Equalization
Settings.
Method 2 - Using AVMM Interface
1. Any changes you make using AVMM interface take precedence over what was
configured in Native PHY IP GUI and/or Assignment Editor.
a. For CTLE in Manual mode, set the CTLE gain value using the reconfiguration
interface. The values are written dynamically and do not require design re-
compilation.
Refer to Intel Cyclone 10 GX Register Map for details on the specific registers
that set the CTLE gain values.
Note: You must set VGA manually for all combinations of CTLE mode.
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Magnitude
(dB)
on page 279
Frequency (Hz)
Modes
Manual
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Intel Cyclone 10 GX Transceiver PHY User Guide
279