Datasheet

Electrical characteristics STM32F405xx, STM32F407xx
116/167 Doc ID 022152 Rev 2
Ethernet characteristics
Table 6 1 shows the Ethernet operating voltage.
Table 6 2 gives the list of Ethernet MAC signals for the SMI (station management interface)
and Figure 44 shows the corresponding timing diagram.
Figure 44. Ethernet SMI timing diagram
Table 60. ULPI timing
Parameter Symbol
Value
(1)
1. V
DD
= 2.7 V to 3.6 V and T
A
= –40 to 85 °C.
Unit
Min. Max.
Control in (ULPI_DIR) setup time
t
SC
-2.0
ns
Control in (ULPI_NXT) setup time - 1.5
Control in (ULPI_DIR, ULPI_NXT) hold time t
HC
-
Data in setup time t
SD
-2.0
Data in hold time t
HD
0-
Control out (ULPI_STP) setup time and hold time t
DC
-9.2
Data out available from clock rising edge t
DD
- 10.7
Table 61. 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 62. Dynamics characteristics: Ethernet MAC signals for SMI
(1)
1. TBD stands for “to be defined”.
Symbol Rating Min Typ Max Unit
t
MDC
MDC cycle time (1.71 MHz, AHB = 72 MHz) TBD TBD TBD ns
t
d(MDIO)
MDIO write data valid time TBD TBD TBD ns
t
su(MDIO)
Read data setup time TBD TBD TBD ns
t
h(MDIO)
Read data hold time TBD TBD TBD ns
ETH_MDC
ETH_MDIO(O)
ETH_MDIO(I)
t
MDC
t
d(MDIO)
t
su(MDIO)
t
h(MDIO)
ai15666c