Lattice Semiconductor CertusPro-NX - Page 113

CertusPro-NX SerDes/PCS Usage Guide
Preliminary Technical Note
FPGA-TN-02245-0.81 © 2020-2021 Lattice Semiconductor 113
All rights reserved. CONFIDENTIAL
Attribute
Selectable Values
Default
Dependency on Other Attributes
External IO Pad Ref Clk for
Quad0
“IO Pad0”,
“IO Pad1”
“IO Pad0”
Active if RefClk Selection for Quad0
== “External IO Pad”
Bifurcation Select
“X4 mode”, “X2 mode”, “X1
mode”, “X2_X1 mode”,
“X1_X1 mode”
“X4 mode”
Available if Protocol == “PCIE”
PCS Setup
Scrambler
“ENABLED”, “DISABLED”
“ENABLED”
Available if Protocol == “10GE”
64b66b Encoder
“ENABLED”, “DISABLED”
“ENABLED”
Available if Protocol == “10GE”
64b66b TX FIFO Almost Full
0 - 15
0
Available if Protocol == “10GE”
64b66b TX FIFO Almost
Empty
0 - 15
0
Available if Protocol == “10GE”
Descrambler
“ENABLED”, “DISABLED”
“ENABLED”
Available if Protocol == “10GE”
64b66b Decoder
“ENABLED”, “DISABLED”
“ENABLED”
Available if Protocol == “10GE”
10GE Clock Frequency
Compensation
“ENABLED”, “DISABLED”
“ENABLED”
Available if Protocol == “10GE”
Block Aligner
“ENABLED”, “DISABLED”
“ENABLED”
Available if Protocol == “10GE”
TX MPCS Reset
“ENABLED”, “DISABLED”
“DISABLED”
Active if (Mode == “Tx only”) or
(Mode == “Rx and Tx”)
TX Phase Compensation
FIFO
“ENABLED”, “DISABLED”
“ENABLED”
Active if (Mode == “Tx only”) or
(Mode == “Rx and Tx”)
8b10b Encoder
“ENABLED”, “DISABLED”
“ENABLED”
Active if (Mode == “Tx only”) or
(Mode == “Rx and Tx”)
RX MPCS Reset
“ENABLED”, “DISABLED”
“DISABLED”
Active if (Mode == “Rx only”) or
(Mode == “Rx and Tx”)
RX Phase Compensation
FIFO
“ENABLED”, “DISABLED”
“ENABLED”
Active if (Mode == “Rx only”) or
(Mode == “Rx and Tx”)
8b10b Decoder
“ENABLED”, “DISABLED”
“ENABLED”
Active if (Mode == “Tx only”) or
(Mode == “Rx and Tx”)
Word Alignment
“ENABLED”, “DISABLED”
“ENABLED”
Active if (Mode == “Rx only”) or
(Mode == “Rx and Tx”)
Number of Lanes > 1
*Always enabled when Protocol ==
“RXAUI”
Word Alignment Bit Width
“10BIT_WIDTH”,
“20BIT_WIDTH”
“20BIT_WIDTH”
Active if (Mode == “Rx only”) or
(Mode == “Rx and Tx”)
Put the COMMA byte to
LSByte
“ENABLED”, “DISABLED”
“DISABLED”
Active if (Mode == “Rx only”) or
(Mode == “Rx and Tx”)
*Always enabled when Protocol ==
“RXAUI”
Automatic Word Alignment
“ENABLED”, “DISABLED”
“ENABLED”
Active if Word Alignment ==
“ENABLED”
Primary Word Alignment
Pattern Value
<hex value>
5F17C
Active if Word Alignment ==
“ENABLED”
Secondary Word Alignment
“ENABLED”, “DISABLED”
“ENABLED”
Active if Word Alignment ==
“ENABLED”
Secondary Word Alignment
Pattern Value
<hex value>
A0E83
Active if (Word Alignment ==
“ENABLED”) and (Secondary Word
Alignment == “ENABLED”)
Use LSByte of the Word
Alignment
“ENABLED”, “DISABLED”
“ENABLED”
Active if Word Alignment ==
“ENABLED”
Use ‘sync_det’ FSM
“ENABLED”, “DISABLED”
“ENABLED”
Active if Word Alignment ==
“ENABLED”