Lattice Semiconductor CertusPro-NX Usage Guide

CertusPro-NX SerDes/PCS Usage Guide
Preliminary Technical Note
50 © 2020-2021 Lattice Semiconductor FPGA-TN-02245-0.81
All rights reserved. CONFIDENTIAL
PIPE FSM
&
Registers Space
8B/10B Decoder/
128B/130B with
Descrambler
8B/10B Encoder/
128B/130B with
Scrambler
PCI Express PCS
PIPE Tx
Elastic
Buffer
(CTC FIFO)
Word/
Block
Aligner
Gen3
Rx Gear
Box
Gen3
Tx Gear
Box
PCIe Power
FSM
PIPE Rx
LMMI I/F
PMA
&
PMA
Controller
Figure 6.4. PCI Express PCS & PMA Controller Block Diagram
MPCS
8B/10B PCS
Figure 6.5 shows the block diagram of the 8B/10B PCS inside MPCS channel. This block implements the most common
functionalities required by serial protocols based on 8B/10B style PCS:
 8B/10B Encoder and Decoder
 Tx Lane-to-lane Deskew
 Tx FIFO and Rx FIFO
 Word Aligner
 Rx Lane Aligner
 Elastic Buffer
8B/10B
Encoder
Tx FIFO
Word
Aligner
8B/10B
Decoder
Elastic
Buffer
Lane
Aligner
Rx Path
Tx Lane-to-lane
Deskew
Rx FIFO
Tx Path
8B/10B PCS
PMA Controller
Fabric
Figure 6.5. MPCS 8B/10B PCS Block Diagram

Lattice Semiconductor CertusPro-NX Specifications

General

Brand	Lattice Semiconductor
Model	CertusPro-NX
Category	Computer Hardware
Language	English