Visible to Intel only — GUID: kqp1486507584937
Ixiasoft
Visible to Intel only — GUID: kqp1486507584937
Ixiasoft
8.5.2.1. XCVR_C10_RX_ADP_VGA_SEL
Pin planner or Assignment Editor Name
Receiver Variable Gain Amplifier Voltage Swing SelectDescription
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.
Value |
Description |
---|---|
RADP_VGA_SEL_<0 to 4> |
VGA Output Voltage Swing Setting <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>