Datasheet

Electrical characteristics STM32F405xx, STM32F407xx
128/185 DocID022152 Rev 4
Table 66 gives the list of Ethernet MAC signals for MII and Figure 48 shows the
corresponding timing diagram.
Figure 49. Ethernet MII timing diagram
Table 65. Dynamic characteristics: Ethernet MAC signals for RMII
Symbol Rating Min Typ Max Unit
t
su(RXD)
Receive data setup time 2 - - ns
t
ih(RXD)
Receive data hold time 1 - - ns
t
su(CRS)
Carrier sense set-up time 0.5 - - ns
t
ih(CRS)
Carrier sense hold time 2 - - ns
t
d(TXEN)
Transmit enable valid delay time 8 9.5 11 ns
t
d(TXD)
Transmit data valid delay time 8.5 10 11.5 ns
Table 66. Dynamic characteristics: Ethernet MAC signals for MII
(1)
1. Data based on characterization results, not tested in production.
Symbol Parameter Min Typ Max Unit
t
su(RXD)
Receive data setup time 9 -
ns
t
ih(RXD)
Receive data hold time 10 -
t
su(DV)
Data valid setup time 9 -
t
ih(DV)
Data valid hold time 8 -
t
su(ER)
Error setup time 6 -
t
ih(ER)
Error hold time 8 -
t
d(TXEN)
Transmit enable valid delay time 0 10 14
t
d(TXD)
Transmit data valid delay time 0 10 15
MII_RX_CLK
MII_RXD[3:0]
MII_RX_DV
MII_RX_ER
t
d(TXEN)
t
d(TXD)
t
su(RXD)
t
su(ER)
t
su(DV)
t
ih(RXD)
t
ih(ER)
t
ih(DV)
ai15668
MII_TX_CLK
MII_TX_EN
MII_TXD[3:0]