2.8 Receive CTL Equalization
- User Defined
- Short-Reach (Default)
- Medium-Reach
- Long-Reach
The Configurator sets the register values based on your selections (Short/Medium/Long Reach) and the Data Rate of the lanes as per the following table.
For example, if Short-Reach is selected, LANE<n>_RE_AMP_RATIO and LANE<n>_RE_CUT_RATIO lane registers are automatically set with values based on the Data rate of that Lane for Short-Reach.
Feature | Control Registers | Condition | Value Programmed in Register |
---|---|---|---|
CTL Equalization | LANE<n>_RE_AMP_RATIO LANE<n>_RE_CUT_RATIO | Data rate of 1G - 3G | Short‐Reach LANE<n>_RE_AMP_RATIO = 0x0 LANE<n>_RE_CUT_RATIO = 0x0 Medium Reach LANE<n>_RE_AMP_RATIO = 0x0 LANE<n>_RE_CUT_RATIO = 0x0 Long Reach LANE<n>_RE_AMP_RATIO = 0x0 LANE<n>_RE_CUT_RATIO = 0x0 |
Data rate of 3G - 4G | Short‐Reach LANE<n>_RE_AMP_RATIO = 0x0 LANE<n>_RE_CUT_RATIO = 0x0 Medium Reach LANE<n>_RE_AMP_RATIO = 0x0 LANE<n>_RE_CUT_RATIO = 0x0 Long Reach LANE<n>_RE_AMP_RATIO = 0x20 LANE<n>_RE_CUT_RATIO = 0x0 | ||
Data rate of 4G - 5G | Short‐Reach LANE<n>_RE_AMP_RATIO = 0x0 LANE<n>_RE_CUT_RATIO = 0x0 Medium Reach LANE<n>_RE_AMP_RATIO = 0x80 LANE<n>_RE_CUT_RATIO = 0x60 Long Reach LANE<n>_RE_AMP_RATIO = 0x80 LANE<n>_RE_CUT_RATIO = 0x80 |