Xilinx Virtex UltraScale+ FPGAs User Manual page 38

The following table lists attributes required by GTM transceiver RX initialization. In general cases,
the reset time required by the RX PMA or the RX PCS varies depending on line rate. The factors
affecting PMA reset time and PCS reset time are the user-configurable attributes
RX_PMA_RESET_TIME, RX_DFE_RESET_TIME, RX_ADAPT_RESET_TIME,
RX_DSP_RESET_TIME, RX_ADC_CLKGEN_RESET_TIME, RX_CDRFREQ_RESET_TIME,
RX_CDRPHASE_RESET_TIME, RX_PCS_RESET_TIME, RX_FEC_RESET_TIME,
RX_PRBS_RESET_TIME and RX_EYESCAN_RESET_TIME.
Table 18: RX Initialization and Reset Attributes
Attribute
CH[0/1]_RST_TIME_CFG2
Bit Name
RX_ADAPT_RESET_TIME
RX_DSP_RESET_TIME
RX_ADC_CLKGEN_RESET_TIME
CH[0/1]_RST_TIME_CFG3
Bit Name
RX_CDRFREQ_RESET_TIME
RX_CDRPHASE_RESET_TIME
CH[0/1]_RST_TIME_CFG1
Bit Name
RX_DFE_RESET_TIME
RX_PMA_RESET_TIME
UG581 (v1.0) January 4, 2019
Virtex UltraScale+ GTM Transceivers
Type
16-bit Reserved. Use the recommended value from the
Wizard.
Bit Field Description
[14:10] Reserved. Represents the time duration to apply an RX
adapt reset. Use the recommended value from the
Wizard. Must be a non-zero value when
RXPMARESETMASK[4] is High and GTRXRESET initiates
the reset process.
[9:5] Reserved. Represents the time duration to apply an RX
DSP reset. Use the recommended value from the
Wizard. Must be a non-zero value when
RXPMARESETMASK[2] is High and GTRXRESET initiates
the reset process.
[4:0] Reserved. Represents the time duration to apply an RX
ADC CLKGEN reset. Use the recommended value from
the Wizard. Must be a non-zero value when
RXPMARESETMASK[1] is High and GTRXRESET initiates
the reset process.
16-bit Reserved. Use the recommended value from the
Wizard.
Bit Field Description
[14:10] Reserved. Represents the time duration to apply an RX
CDR FR reset. Use the recommended value from the
Wizard. Must be a non-zero value when
RXPMARESETMASK[5] is High and GTRXRESET initiates
the reset process.
[9:5] Reserved. Represents the time duration to apply an RX
CDR PH reset. Use the recommended value from the
Wizard. Must be a non-zero value when
RXPMARESETMASK[6] is High and GTRXRESET initiates
the reset process.
16-bit Reserved. Use the recommended value from the
Wizard.
Bit Field Description
[14:10] Reserved. Represents the time duration to apply an RX
DFE reset. Use the recommended value from the
Wizard. Must be a non-zero value when
RXPMARESETMASK[3] is High and GTRXRESET initiates
the reset process.
[9:5] Reserved. Represents the time duration to apply an RX
PMA reset. Use the recommended value from the
Wizard. Must be a non-zero value when
RXPMARESETMASK[0] is High and GTRXRESET initiates
the reset process.
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Chapter 2: Shared Features
Description
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