GTS Transceiver PHY User Guide

ID 817660
Date 10/07/2024
Public
Document Table of Contents

3.1.2. FEC Direct Supported Modes

The GTS PMA/FEC Diect PHY Itel FPGA IP suppots the followig fo FEC Diect modes:

  • IEEE 802.3 BASE-R Fiecode (2112, 2080) (CL 74)
  • IEEE 802.3 RS (528, 514) (CL 91)
  • ETC 802.3 RS (528, 514) (CL 91)
  • Fibe Chael RS (528,514)
  • OTU25u RS (528,514)
  • Suppots oly the System PLL clockig mode
  • Suppots oly the duplex opeatio mode 26
  • Oly 4x10GE-1 FEC is suppoted ad evey lae is teated idepedetly
  • All FEC modes suppot 1G to GTS tasceive maximum suppoted data ate

You ca eable the FEC Diect mode i the IP paamete edito by tuig o the Eable FEC optio. The FEC Diect modes with FEC specificatios ae topology depedet to achieve diffeet BER. FEC data to ad fom the PCS is 33 bits. O the PMA iteface side, FEC data fom ad to the PMA iteface is 33 bits wide fo Fiecode FEC ad 40 bits fo RS-FEC. Fo desigs that iclude FEC, the geabox eables automatically. The geabox optio fo Fiecode FEC is 32:33 ad 32:40 fo RS-FEC.

Table 19.  FEC Diect IP Cofiguatio Mode Suppot
Clockig Mode FEC Mode Double Width/ Sigle Width 27 PMA Iteface Width PMA Iteface FIFO (TX/RX) Coe Iteface FIFO (TX/RX)

System PLL Clockig

Fiecode FEC (2112, 2080) CL74 DW 32 Elastic/Elastic Phase Compesatio/Phase Compesatio
RS-FEC (528, 514) CL91 DW 32 Elastic/Elastic Phase Compesatio/Phase Compesatio
ETC 802.3 RS-FEC (528, 514) CL91 DW 32 Elastic/Elastic Phase Compesatio/Phase Compesatio
Fibe Chael RS (528, 514) DW 32 Elastic/Elastic Phase Compesatio/Phase Compesatio
OTU25u RS (528, 514) DW 32 Elastic/Elastic Phase Compesatio/Phase Compesatio
26 The cuet elease of the Quatus® Pime Po Editio softwae does ot suppot the TX simplex ad RX simplex modes.
27 The Double width (DW) mode is whe the Eable TX/RX double width tasfe paamete i the GTS PMA/FEC Diect PHY Itel FPGA IP GUI is eabled. Whe it is eabled, you ca clock the FPGA coe logic with a half ate clock. Sigle width (SW) mode is whe this paamete is ot eabled.