Calculating the MMCM Phase Shift or IODelay Tap Setting - 9.0 English

Tri-Mode Ethernet MAC LogiCORE IP Product Guide (PG051)

Document ID
PG051
Release Date
2023-11-07
Version
9.0 English

Two differing methods can be used by the core to meet input bus (GMII/MII or RGMII) setup and hold timing specifications. The following topics are included in this appendix:

MMCM Usage
An MMCM can be used in the receiver clock path to meet the input setup and hold requirements when implementing GMII/MII and RGMII. See the Physical Interface sections in this Guide in Designing with the Core.
IODelay Usage
IODelays can be used in the receiver clock path to meet the input setup and hold requirements when implementing GMII/MII and RGMII. See the Physical Interface sections in this guide in Designing with the Core.