STM32F479AI datasheet(151/208 Pages) STMICROELECTRONICS

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DocID028010 Rev 2

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STM32F479xx

Electrical characteristics

187

Table 76 gives the list of Ethernet MAC signals for MII and Figure 50 shows the

corresponding timing diagram.

Figure 51. Ethernet MII timing diagram

Table 75. Dynamics characteristics: Ethernet MAC signals for RMII(1)

1. Guaranteed based on test during characterization.

Symbol

Parameter

Min

Typ

Max

Unit

tsu(RXD) Receive data setup time

2.5

tih(RXD)

Receive data hold time

2.0

tsu(CRS) Carrier sense setup time

0.5

tih(CRS)

Carrier sense hold time

1.5

td(TXEN) Transmit enable valid delay time

5.5

6.5

td(TXD)

Transmit data valid delay time

6.0

6.5

Table 76. Dynamics characteristics: Ethernet MAC signals for MII(1)

1. Guaranteed based on test during characterization.

Symbol

Parameter

Min

Typ

Max

Unit

tsu(RXD) Receive data setup time

tih(RXD)

Receive data hold time

tsu(DV)

Data valid setup time

tih(DV)

Data valid hold time

2.5

tsu(ER)

Error setup time

tih(ER)

Error hold time

td(TXEN) Transmit enable valid delay time

td(TXD)

Transmit data valid delay time

MII_RX_CLK

MII_RXD[3:0]

MII_RX_DV

MII_RX_ER

td(TXEN)

td(TXD)

tsu(RXD)

tsu(ER)

tsu(DV)

tih(RXD)

tih(ER)

tih(DV)

ai15668

MII_TX_CLK

MII_TX_EN

MII_TXD[3:0]

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