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DocID15274 Rev 7 73/104
STM32F105xx, STM32F107xx Electrical characteristics
103
Figure 32. Ethernet RMII timing diagram
Table 51 gives the list of Ethernet MAC signals for MII and Figure 32 shows the
corresponding timing diagram.
Figure 33. Ethernet MII timing diagram
Table 50. Dynamic characteristics: Ethernet MAC signals for RMII
Symbol Rating Min Typ Max Unit
t
su(RXD)
Receive data setup time 4 - - ns
t
ih(RXD)
Receive data hold time 2 - - ns
t
su(DV)
Carrier sense set-up time 4 - - ns
t
ih(DV)
Carrier sense hold time 2 - - ns
t
d(TXEN)
Transmit enable valid delay time 8 10 16 ns
t
d(TXD)
Transmit data valid delay time 7 10 16 ns
RMII_REF_CLK
RMII_TX_EN
RMII_TXD[1:0]
RMII_RXD[1:0]
RMII_CRS_DV
t
d(TXEN)
t
d(TXD)
t
su(RXD)
t
su(CRS)
t
ih(RXD)
t
ih(CRS)
ai15667
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]