Table 18.
RS-FEC Mode Configurations
Supported Mode
RS-FEC
Code
Type
FEC Mode
Alignment/Scrambling/
Transcoder Mode
Transcoder
Bypass
32GFC/ CPRI 24G (x1, x2, x3, x4)
NRZ
(528,
514)
Fractured
Fibre channel
Not bypassed
128 GFC
Aggregate
Fibre channel
Not bypassed
25GE FEC Direct (x1, x2, x3, x4)
Fractured
Basic
Not bypassed
100 GbE
Aggregate
Basic
Not bypassed
Interlaken
PAM4
(544,
514)
Aggregate
Fibre channel
Bypassed
Figure 23.
RS-FEC Options
Table 19.
RS-FEC Parameters
Parameter
Value
Description
Enable aggregate mode
On/Off
RS-FEC Clocking Mode
EHIP clock
Clock 0
Clock 1
Clock 2
Clock 3
No Clock
Sets the clocking mode for the RS-FEC block. For some RS-
FEC topologies, the clock selection is fixed. In all other cases,
this control selects the TX adapter clock used to clock the
RS-FEC block.
First RS-FEC Lane
first_lane0
first_lane1
first_lane2
first_lane3
Selects the first RS-FEC lane to be used. There are four lanes
in the RS-FEC block. When the RS-FEC block is in fractured
mode, any of the four lanes may be selected as the first lane.
For multiple channel Native PHY IP core instances with the
continued...
(3)
The Interlaken mode requires a special string in the quartus.ini file to enable its functionality.
For more details, contact My Intel support.
2. Implementing the Transceiver PHY Layer in Intel Stratix 10 Devices
UG-20056 | 2019.02.04
Intel
®
Stratix
®
10 E-Tile Transceiver PHY User Guide
42