RMII Mode

Table 1. GMAC RMII Mode Timings
Symbol	Parameter	Min	Max	Unit
GMAC₂₁	ETXEN toggling from EREFCK rising	2	16	ns
GMAC₂₂	ETX toggling from EREFCK rising	2	16
GMAC₂₃	Setup for ERX from EREFCK rising	4	–
GMAC₂₄	Hold for ERX from EREFCK rising	2	–
GMAC₂₅	Setup for ERXER from EREFCK rising	4	–
GMAC₂₆	Hold for ERXER from EREFCK rising	2	–
GMAC₂₇	Setup for ECRSDV from EREFCK rising	4	–
GMAC₂₈	Hold for ECRSDV from EREFCK rising	2	–

Figure 1. GMAC RMII Mode Signals