STM32F756VG datasheet(168/228 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F756xx

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DocID027589 Rev 4

Table 86 gives the list of Ethernet MAC signals for the RMII and Figure 56 shows the

corresponding timing diagram.

Figure 56. Ethernet RMII timing diagram

Table 85. Dynamics characteristics: Ethernet MAC signals for SMI(1)

1. Guaranteed by characterization results.

Symbol

Parameter

Min

Typ

Max

Unit

tMDC

MDC cycle time(2.38 MHz)

400

403

Td(MDIO) Write data valid time

10.5

12.5

tsu(MDIO) Read data setup time

12.5

th(MDIO)

Read data hold time

Table 86. Dynamics characteristics: Ethernet MAC signals for RMII(1)

1. Guaranteed by characterization results.

Symbol

Parameter

Min

Typ

Max

Unit

tsu(RXD) Receive data setup time

tih(RXD)

Receive data hold time

1.5

tsu(CRS) Carrier sense setup time

tih(CRS)

Carrier sense hold time

td(TXEN) Transmit enable valid delay time

10.5

td(TXD)

Transmit data valid delay time

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