STM32H742AI datasheet(319/357 Pages) STMICROELECTRONICS

Part #	STM32H742AI

Description	32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB Flash, up to 1MB RAM, 46 com. and analog interfaces

PDF	357 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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319 / 357 page

DS12110 Rev 7

319/357

STM32H742xI/G STM32H743xI/G

Electrical characteristics (rev V)

322

Ethernet interface characteristics

Unless otherwise specified, the parameters given in Table 212, Table 213 and Table 214 for

SMI, RMII and MII are derived from tests performed under the ambient temperature,

frcc_c_ck frequency and VDD supply voltage conditions summarized in Table 122: General

operating conditions, with the following configuration:

•

Output speed is set to OSPEEDRy[1:0] = 10

•

Capacitive load CL=20 pF

•

Measurement points are done at CMOS levels: 0.5VDD

•

IO Compensation cell activated.

•

HSLV activated when VDD ≤ 2.7 V

•

VOS level set to VOS1

Refer to Section 7.3.15: I/O port characteristics for more details on the input/output

characteristics:

Figure 115. Ethernet SMI timing diagram

Table 212. Dynamics characteristics: Ethernet MAC signals for SMI (1)

1. Guaranteed by characterization results.

Symbol

Parameter

Min

Typ

Max

Unit

tMDC

MDC cycle time( 2.5 MHz)

400

403

Td(MDIO)

Write data valid time

0.5

1.5

tsu(MDIO)

Read data setup time

12.5

th(MDIO)

Read data hold time

MS31384V1

ETH_MDC

ETH_MDIO(O)

ETH_MDIO(I)

tMDC

td(MDIO)

tsu(MDIO)

th(MDIO)

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