STM32F407IE datasheet(105/154 Pages) STMICROELECTRONICS

105 / 154 page

STM32F405xx, STM32F407xx

Electrical characteristics

Doc ID 022152 Rev 1

105/154

Ethernet characteristics

Table 60 shows the Ethernet operating voltage.

Table 61 gives the list of Ethernet MAC signals for the SMI (station management interface)

and Figure 38 shows the corresponding timing diagram.

Figure 38.

Ethernet SMI timing diagram

Table 59.

ULPI timing

Parameter

Symbol

Value(1)

VDD = 2.7 V to 3.6 V and TA = –40 to 85 °C.

Unit

Min.

Max.

Output clock

Setup time (control in)

tSC, tSD

-6.0

Hold time (control in)

tHC, tHD

0.0

Output delay (control out)

tDC, tDD

-9.0

Input clock

(optional)

Setup time (control in)

tSC, tSD

-3.0

Hold time (control in)

tHC, tHD

1.5

Output delay (control out)

tDC, tDD

-6.0

Table 60.

Ethernet DC electrical characteristics

Symbol

Parameter

Min.(1)

All the voltages are measured from the local ground potential.

Max.(1)

Unit

Input level

VDD

Ethernet operating voltage

2.7

3.6

Table 61.

Dynamics characteristics: Ethernet MAC signals for SMI(1)

TBD stands for “to be defined”.

Symbol

Rating

Min

Typ

Max

Unit

tMDC

MDC cycle time (1.71 MHz, AHB = 72 MHz)

TBD

td(MDIO)

MDIO write data valid time

TBD

tsu(MDIO) Read data setup time

TBD

th(MDIO)

Read data hold time

TBD

ETH_MDC

ETH_MDIO(O)

ETH_MDIO(I)

tMDC

td(MDIO)

tsu(MDIO)

th(MDIO)

ai15666c

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