GTS Transceiver PHY User Guide

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

3.3.5.1. PMA Configuration Rules for SDI Mode

You ca implemet the SDI potocol mode with the GTS PMA/FEC Diect PHY Itel FPGA IP by followig the steps show below:
  1. I the Commo Datapath Optios select SDI fo the PMA cofiguatio ules settig.
  2. Cofigue the data ate to match specific SDI stadad you ae usig.
  3. Esue that the efeece clock is set to coect fequecy to suppot the SDI data ate.
  4. Cofigue the clock divides, if ecessay, to match the SDI data ate.
The followig cofiguatios ae suppoted i SDI mode.
Table 28.  Cofiguatios Suppoted i SDI Mode
Cofiguatio Data Rate (Mbps) Refclk Fequecies (MHz) PMA Data Width
HD-SDI 1,485 74.25, 148.5 20-bit
1,4835 74.175, 148.35 20-bit
3G-SDI 2,970 148.5, 297 20-bit
2,967 148.35, 296.7 20-bit
6G-SDI 5,940 297, 594 20-bit
12G-SDI 11,880 297, 594 20-bit
If you ae implemetig the SDI mode, the followig ae impotat implemetatio details:
  • No-boded mode fo SDI: The mode does ot use boded laes because it tasmits video, audio, ad data ove a sigle chael, makig multi-lae bodig uecessay.
  • RX AC cap bypass: The RX AC couplig capacito is bypassed to esue the eceive ca hadle the SDI sigal's DC compoets, impovig sigal quality ad educig distotio. Refe to Receive Buffe ad Equalize fo moe ifomatio.
  • TX PLL factioal mode: If you ae implemetig paallel loopback without a VCXO, the TX PLL opeates i factioal mode with a efeece clock fequecy of 141 MHz to geeate pecise clock fequecies eeded fo accuate data tasmissio. Refe to TX Datapath Optios Paametes fo moe ifomatio o the factioal mode.

You ca implemet the SDI mode cofiguatio usig the GTS PMA/FEC Diect PHY Itel FPGA IP ad combie it with the GTS SDI II Itel FPGA IP, which povides the uppe laye potocol implemetatio, fo a complete solutio of the SDI potocol. Refe to the GTS SDI II Itel FPGA IP Desig Example Use Guide fo moe details.

This SDI selectio also eables you to implemet the dual simplex mode fo the GTS PMA/FEC Diect PHY Itel FPGA IP. Refe to the GTS Tasceive Dual Simplex Itefaces Use Guide fo details o how to implemet the dual simplex mode.