74.6.13.3 Ethernet MAC RMII Mode

Timings are provided in the following conditions:
  • 1.8V domain: VDDIO from 1.7V to 1.9V, maximum external capacitor = 10 pF, DRV= 1, SR = 0
  • 3.3V domain: VDDIO from 3.0V to 3.6V, maximum external capacitor = 10 pF, DRV= 0, SR = 0
Table 74-43. Ethernet MAC RMII Mode
Symbol Parameter Min Max Unit
GMAC21 TXEN toggling from REFCK rising 2 16 ns
GMAC22 TX[1:0] toggling from REFCK rising 2 16 ns
GMAC23 Setup for RX[1:0] from REFCK rising 4 – ns
GMAC24 Hold for RX[1:0] from REFCK rising 2 – ns
GMAC25 Setup for RXER from REFCK rising 4 – ns
GMAC26 Hold for RXER from REFCK rising 2 – ns
GMAC27 Setup for CRSDV from REFCK rising 4 – ns
GMAC28 Hold for CRSDV from REFCK rising 2 – ns
Figure 74-41. Ethernet MAC RMII Timings