Vga Settings; Transmitter General Analog Settings - Intel Cyclone 10 GX User Manual

8. Analog Parameter Settings
UG-20070 | 2018.09.24
Assign To
RX serial data pin.
Syntax
set_instance_assignment -name XCVR_C10_RX_ADP_CTLE_EQZ_1S_SEL
<value> -to <rx_serial_data pin name>

8.5.2. VGA Settings

8.5.2.1. XCVR_C10_RX_ADP_VGA_SEL
Pin planner or Assignment Editor Name
Receiver Variable Gain Amplifier Voltage Swing Select
Description
The variable gain amplifier (VGA) amplifies the signal amplitude and ensures a
constant voltage swing before the data is fed to the CDR for sampling. This
assignment controls the VGA output voltage swing when adaptation mode of VGA is
set to manual. The default value is set to RADP_VGA_SEL_4 for VGA Output Voltage
Swing Setting 4.
Default values for VGA if VGA are not set exclusively.
For PCIe Gen1 & Gen2: default value is RADP_VGA_SEL_2.
CTLE mode = NON_S1_MODE and datarate <= 4.5Gbps: default value is
RADP_VGA_SEL_2.
CTLE mode = NON_S1_MODE and datarate > 4.5Gbps: default value is
RADP_VGA_SEL_4.
CTLE mode = S1_MODE: default value is RADP_VGA_SEL_2.
Table 221. Available Options
Value
RADP_VGA_SEL_<0 to 4>
Assign To
RX serial data pin.
Syntax
set_instance_assignment -name XCVR_C10_RX_ADP_VGA_SEL <value> -to
<rx_serial_data pin name>

8.6. Transmitter General Analog Settings

Send Feedback
VGA Output Voltage Swing Setting <0 to 4>
®
Intel
Description
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Cyclone 10 GX Transceiver PHY User Guide
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