Datasheet

Electrical characteristics STM32H743xI
196/231 DS12110 Rev 5
Figure 60. Ethernet SMI timing diagram
Table 112 gives the list of Ethernet MAC signals for the RMII and Figure 61 shows the
corresponding timing diagram.
Figure 61. Ethernet RMII timing diagram
Table 113 gives the list of Ethernet MAC signals for MII and Figure 62 shows the
corresponding timing diagram.
Table 112. Dynamics characteristics: Ethernet MAC signals for RMII
(1)
1. Guaranteed by characterization results.
Symbol Parameter Min Typ Max Unit
t
su(RXD)
Receive data setup time 2 - -
ns
t
ih(RXD)
Receive data hold time 3 - -
t
su(CRS)
Carrier sense setup time 2.5 - -
t
ih(CRS)
Carrier sense hold time 2 - -
t
d(TXEN)
Transmit enable valid delay time 4 4.5 7
t
d(TXD)
Transmit data valid delay time 7 7.5 11.5
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