E-Tile Transceiver PHY User Guide

ID 683723
Date 9/30/2022
Public
Document Table of Contents

2.2.7.2. 128 GFC Mode

In 128 GFC mode, fibre-channel is enabled for all lanes, and no additional settings are required. Scrambling or descrambling is disabled in 128 GFC mode. While the transcoder bypass setting options for the RS-FEC are available, they are not required for fibre-channel mode. The RS-FEC must be in aggregate mode for 128 GFC.

When you select the aggregate mode for 128 GFC, you must select the TX/RX reset sequencing option on the Reset tab. The GUI indicates an error unless you enable this option.

When the RS-FEC aggregate mode is enabled, the Native PHY IP core supports the 128 GFC mode. The other RS-FEC settings are the same for the aggregated 128 GFC mode and the fractured 32 GFC mode. The signaling data rate for 32 GFC is 28.05 Gbps. For 128 GFC, the aggregate signaling data rate is 112.2 Gbps (four lanes of 28.05 Gbps).

Figure 32. 128 GFC Mode RS-FEC Settings
Figure 33. 128 GFC Mode Reset Settings

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