Xilinx 7 Series User Manual page 145

Table 4-13: CDR Recommended Settings for Scrambled/PRBS Data
Notes:
1. For protocol-specific settings, use the recommended value from the 7 Series FPGAs Transceivers Wizard and/or
2. Spread-spectrum clocking (SSC) is used to reduce the spectral density of electromagnetic interference (EMI).
Table 4-14: CDR Recommended Settings for Protocols with SSC
RXOUT_DIV
Table 4-15: GTP CDR Recommended Settings for 8B/10B Encoded Data
SSC
Notes:
1. For protocol-specific settings, use the recommended value from the 7 Series FPGAs Transceivers Wizard and/or
2. Spread-spectrum clocking (SSC) is used to reduce the spectral density of electromagnetic interference (EMI).
3. RX_DEBUG_CFG is 14'h000 for all settings.
7 Series FPGAs GTP Transceivers User Guide
UG482 (v1.9) December 19, 2016
RXOUT_DIV REFCLK PPM
±200
2 ±700
±1,250
±200
4 or 8 ±700
±1,250
the protocol characterization reports.
REFCLK PPM with SSC
1
±700 PPM SSC 33 KHz Triangular
2
-5,000 PPM
4
(2)
)
RXOUT_DIV REFCLK PPM
±200
1 ±700
±1,250
±200
2 ±700
±1,250
±200
4 ±700
±1,250
±200
8 ±700
±1,250
the protocol characterization reports.
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RXCDR_CFG
83'h0_0011_07FE_2060_2108_1010
83'h0_0011_07FE_0860_2110_1010
RXCDR_CFG
83'h0_0000_87FE_2060_2448_1010
83'h0_0000_47FE_2060_2450_1010
83'h0_0000_47FE_1060_2450_1010
RXCDR_CFG
83'h0_0001_07FE_4060_0104_1010
83'h0_0001_07FE_4060_2104_1010
83'h0_0001_07FE_2060_0104_1010
83'h0_0001_07FE_2060_2104_1010
83'h0_0001_07FE_1060_0104_1010
83'h0_0001_07FE_1060_2104_1010
83'h0_0001_07FE_0860_0104_1010
83'h0_0001_07FE_0860_2104_1010
Send Feedback
RX CDR
(1) (2)
(No SSC )
(1)
(No
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