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AR# 61175

Correspondence table between 7-Series GTX IBIS-AMI model and GTX Parameters

Description

Some parameters in the 7-Series GTX IBIS-AMI model are named in a different way than in the real 7-Series GTX parameters.

In this AR a correspondence table and some notes are given.

Solution

IBIS-AMI Parameter Name 7-GTX Parameter Name Description
TX_PVT No correspondence: IBIS-AMI model specific parameter Select silicon process, voltage, and temperature
(PVT) corner for simulation.
0 = Typical (TT) (default)
1 = Fast (FF)
2 = Slow (SS)
TXDIFFCTRL[3:0] TXDIFFCTRL[3:0] Adjust transmitter output amplitude swing. There are 16
settings represented by 16 codes. The swing level for each
code could vary with the process corner selection.
TXPRECURSOR[4:0] TXPRECURSOR[4:0] Transmitter pre-cursor TX pre-emphasis control. The default is user
specified.
TXPOSTCURSOR[4:0] TXPOSTCURSOR[4:0] Transmitter post-cursor TX pre-emphasis control. The default is user
specified.
RX_PVT No correspondence: IBIS-AMI model specific parameter Select silicon process, voltage, and temperature
(PVT) corner for simulation.
0 = Typical (TT) (default)
1 = Fast (FF)
2 = Slow (SS)
Record_Result No correspondence: IBIS-AMI model specific parameter Output is saved to a file named
record_adaptation_result.txt and
record_stat_result.txt in the working
directory of the EDA tool.
1 = Enable output
0 = Disable output (default)
RXLPMEN RXLPMEN Select RX equalization method:
1 = Low-power mode (linear equalizer only)
0 = Linear equalizer + DFE (default)
LPM_KL_InitDAC RXLPM_LF_CFG when the override mode is used (RXLPMLFKLOVRDEN = 1) Initial CTLE low-frequency gain DAC code in LPM mode.
When LPM_KL_OverWrEn= 1, this is also the DAC code to be fixed at.
Default = 25
LPM_KL_OverWrEn RXLPMLFKLOVRDEN Parameter to fix LPM CTLE low-frequency gain DAC code.
LPM_KH_InitDAC RXLPM_HF_CFG when in hold or override mode (RXLPMLFKLOVRDEN = 1) Initial CTLE high-frequency gain DAC code in LPM mode.
When LPM_KH_OverWrEn = 1, this is also the high frequency
gain value to be fixed at.
LPM_KH_OverWrEn RXLPMLFKLOVRDEN Parameter to fix LPM CTLE high-frequency gain function.
RX_DFE_GAIN_CFG_bit12_to_8 RX_DFE_GAIN_CFG[12:8] Gain Control when RXDFEAGCOVRDEN = 1
RXDFEAGCOVRDEN RXDFEAGCOVRDEN AGC adaptation function.
0 = Auto adapt (default)
1 = Fixed
RX_DFE_UT_CFG_bit11_to_5 RX_DFE_UT_CFG Initial DAC code for unrolled tap function in auto mode.
Override DAC code for unrolled tap function in fixed mode, when RXDFEUTOVRDEN = 1
RXDFEUTOVRDEN RXDFEUTOVRDEN override Unrolled Tap value
RX_DFE_H2_CFG_bit6_to_1 RX_DFE_H2_CFG Initial DAC code for DFETAP2 function in auto mode.
Override DAC code for DFETAP2 function in fixed mode when RXDFETAP2OVRDEN = 1
Default = 5
RXDFETAP2OVRDEN RXDFETAP2OVRDEN DFETAP2 adaptation function.
0 = Auto adapt (default)
1 = Fixed
RX_DFE_KL_CFG2_bit8_to_5 RX_DFE_KL_CFG2[8:5] and RX_DFE_KL_CFG2[17:14] As UG476 requires the same value for CTLE1 and CTLE2, this is equivalent to both parameters.CTLE1 and CTLE2 code: suggest range is from 0 to 5
Default = 1
RX_DFE_KL_CFG2_bit23_to_26 RX_DFE_KL_CFG2[26:23] CTLE3 code: suggest range is from 0 to 7
AR# 61175
Date Created 06/18/2014
Last Updated 06/24/2014
Status Active
Type General Article
Devices
  • Kintex-7
  • Virtex-7