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.