Lane Margining at Receiver Parameters 1 Register @0xcd0

The Lane Margining at Receiver Parameters of the PHY are advertised in this Register.

Table 1. i_margining_parameters_1_reg
Bits SW Name Description Reset
0 R/W M VoltageSupported [MVS]
  • 1b - Voltage Margining is supported
  • 0b - Voltage Margining is not supported
 0x1
1 R/W M IndUpDownVoltage [MINDUDVS]
  • 1b - Independent Up Down Voltage Margining is supported
  • 0b - Independent Up Down Voltage Margining is not supported
 0x1
2 R/W M IndLeftRightTimings [MINDLRTS]
  • 1b - Independent Left/Right Timing Margining is supported
  • 0b - Independent Left/Right Timing Margining is not supported
 0x1
3 R/W M SampleReporting [MSRM]
  • 1b - Sampling Rates M SamplingRateVoltage, M SamplingRateTiming are supported
  • 0b - Sample Count is supported
 0x0
4 R/W M IndErrorSampler [MIES]
  • 1b - Margining will not produce errors (change in the error rate) in data stream (error sampler is independent)
  • 0b - Margining may produce errors in the data stream
 0x1
11:5 R/W M NumVoltageSteps [MNVS] Number of voltage steps from default (either up or down), minimum range +/-50 mV as measured by 16.0 GT/s reference equalizer Voltage offset must increase monotonically. The number of steps in both positive and negative direction from the default sample location must be identical This value is undefined if M VoltageSupported is 0b. 0x20
17:12 R/W M NumTimingSteps [MNTS] Number of time steps from default (to either left or right), range must be at least +/-0.2 UI. Timing offset must increase monotonically. The numberof steps in both positive (toward the end of the unit interval) and negative (toward the beginning of the unit interval) must be identical. 0x6
23:18 R/W M MaxTimingOffset [MMTO] Offset from default at maximum step value as percentage of a nominal UI at 16.0 GT/s A 0 value may be reported if the vendor chooses not to report the offset. 0x14
29:24 R/W M MaxVoltageOffset [MMVO] Offset from default at maximum step value as percentage of one volt. A 0 value may be reported if the vendor chooses not to report the offset. 0x5
31:30 R Reserved [RES] Reserved 0x0