GTS Transceiver PHY User Guide

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

3.3.5.4. PMA Configuration Rules for CPRI Mode

You ca implemet the CPRI mode by usig the followig cofiguatio settigs i the GTS PMA/FEC Diect PHY Itel FPGA IP:
  1. I the Commo Datapath Optios select CPRI fo the PMA cofiguatio ules settig.
  2. Cofigue the PMA data ate to match specific CPRI lie bit ate you ae usig.
  3. Esue that the efeece clocks; tasmitte (TX PLL efeece clock) ad eceive (RX CDR efeece clock), ae set to the coect fequecy to suppot the CPRI lie bit ate.
  4. Cofigue the PMA width to match specific CPRI lie bit ate you ae usig.
The followig cofiguatios ae suppoted i CPRI mode.
Table 31.  Cofiguatios Suppoted i CPRI Mode
CPRI Lie Bit Rate (Gbps) Refeece Clock (MHz) PMA Data Width
1.2288 153.6 o 122.88 20
2.4576 153.6 o 122.88 20
3.072 153.6 o 122.88 20
4.9152 153.6 o 122.88 20
6.144 153.6 o 122.88 20
9.8304 153.6 o 122.88 20
10.1376 184.32 o 122.88 32
12.1651 184.32 o 122.88 32
24.33024 184.32 o 122.88 32

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