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Parameter
Value
Description
RS-FEC block enabled, the RS-FEC lanes used must be
contiguous and must fit within a single four-channel RS-FEC
block.
Alignment/Scrambling/Transcoder
Mode
Basic Mode
Fibre-Channel
Mode
Basic Mode selects Ethernet-like mode for a specific lane. The
transcoder is not bypassed, alignment or codeword markers
are used for alignment of the RS-FEC block, and the PN-5280
scrambling is disabled.
Fibre-Channel Mode selects Fibre-Channel mode for RS-FEC
lanes. Fibre-channel mode disables RS-FEC alignment/
codeword markers. Selecting Fibre-Channel mode also
selects PN-5280 scrambling when in fractured mode.
CPRI Mode is identical to Fibre-Channel mode with respect to
the RS-FEC operation.
Transcoder Bypass Lane
Not Bypassed
Bypassed
Selects the transcoder mode for RS-FEC lanes.
• Not bypassed: The transcoder is not bypassed.
• Bypassed: Bypasses the transcoder to enable a user-
defined transcoder implemented in the FPGA.
Related Information
My Intel Support
2.2.6.1. Fibre-Channel and CPRI Modes
The core RS-FEC setup is identical for 32 GFC (Fibre-Channel) and CPRI. The RS-FEC
options appear in the GUI after you select the Enable RSFEC option. In these modes
alignment/codeword markers are not used, and PN-5280 scrambling and descrambling
are used.
The Number of data channels indicates how many data channels are RS-FEC-
enabled within one block. The First RSFEC Lane determines, which lane is the first
lane within one block. Together, these two parameters determine and fix the lanes you
are using in the IP core. For example, if Number of data channels is set to 3, the
only valid option for the first lane is 0 or 1. All the lanes must be contiguously placed
within one block, and you must observe this rule to achieve valid IP configurations.
Once you have correctly set those two parameters, the GUI indicates the channels
being enabled.
Figure 24.
Fibre-Channel Mode Settings
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
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