Datasheet

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STM32F405xx, STM32F407xx Electrical characteristics
Table 64 gives the list of Ethernet MAC signals for the SMI (station management interface)
and Figure 47 shows the corresponding timing diagram.
Figure 47. Ethernet SMI timing diagram
Table 65 gives the list of Ethernet MAC signals for the RMII and Figure 48 shows the
corresponding timing diagram.
Figure 48. Ethernet RMII timing diagram
Table 63. Ethernet DC electrical characteristics
Symbol Parameter Min.
(1)
1. All the voltages are measured from the local ground potential.
Max.
(1)
Unit
Input level V
DD
Ethernet operating voltage 2.7 3.6 V
Table 64. Dynamic characteristics: Ehternet MAC signals for SMI
(1)
1. Data based on characterization results, not tested in production.
Symbol Parameter Min Typ Max Unit
t
MDC
MDC cycle time( 2.38 MHz) 411 420 425
ns
T
d(MDIO)
Write data valid time 6 10 13
t
su(MDIO)
Read data setup time 12 - -
t
h(MDIO)
Read data hold time 0 - -
MS31384V1
ETH_MDC
ETH_MDIO(O)
ETH_MDIO(I)
tMDC
td(MDIO)
tsu(MDIO)
th(MDIO)
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)
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