Intel Stratix 10 User Manual

Figure 44. RX Data Flow
Simplified blocks. The gearbox is indicated in red.
50/100GbE & 1588
Data from four
other channels
Core Interface EMIB
FIFOFIFO
10/25GbE
RS-FEC
PMA Interface
FIFO
GB
PMA
Native PHY IP Core
The TX PMA interface FIFO is in the datapath for all modes of operation such as:
• PMA direct
• PMA direct high data rate PAM4 modes
• EHIP_LANE
• EHIP_CORE
• RS-FEC
The two TX FIFO modes are elastic or phase compensation. Elastic mode is identical to
Basic mode in Intel Stratix 10 L/H-tiles where you can monitor the FIFO full or empty
and almost full or empty signals. The control FIFO writes and reads through the read
and write enable ports.
Refer to Supported Applications/Modes for more details about these modes, and refer
to the PMA Interface section for more details about the E-Tile Native PHY PMA
Interface.
Related Information
• Supported Applications/Modes on page 21
• PMA Interface on page 36
3.1.6. TX PMA Bonding
TX bonding enables you to minimize skew between channels.
Enable bonding by selecting the Enable TX PMA bonding option in the TX PMA tab
of the Native PHY IP GUI. You can only bond channels within the same transceiver tile
(24 channels). The transceiver Native PHY IP core does not support reconfiguration
between bonded and non-bonded channel configurations.
The Native PHY IP core restricts the maximum number of channels to 24 for bonded
configuration and provides an information message to notify you of the restriction. The
fitter enforces the placement restriction to make sure all the bonded channels yield a
valid placement.
When you enable TX PMA bonding, the maximum channel-to-channel skew is 2 UI +
125 ps.
3. Intel Stratix 10 E-Tile Transceiver PHY Architecture
UG-20056 | 2019.02.04
Send Feedback
Intel
®
Stratix
®
10 E-Tile Transceiver PHY User Guide
77

Intel Stratix 10 Specifications

General

Brand	Intel
Model	Stratix 10
Category	Control Unit
Language	English