STM32F217RGT7 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F217RGT7

ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM, crypto, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

STMicroelectronics 

Electrical characteristics

STM32F21xxx

Figure 45. Ethernet SMI timing diagram

ETH_MDC

ETH_MDIO(O)

ETH_MDIO(I)

tMDC

td(MDIO)

tsu(MDIO)

th(MDIO)

Table 60. Dynamics characteristics: Ethernet MAC signals for SMI

Symbol

Rating

Min

Typ

Max

tMDC

MDC cycle time (2.38 MHz)

td(MDIO) MDIO write data valid time

tsu(MDIO) Read data setup time

th(MDIO) Read data hold time

411

420

425

6

10

13

12

-

-

0

-

-

ai15666d

Unit

ns

ns

ns

ns

Table 61 gives the list of Ethernet MAC signals for the RMII and Figure 46 shows the

corresponding timing diagram.

Figure 46. Ethernet RMII timing diagram

RMII_REF_CLK

RMII_TX_EN

RMII_TXD[1:0]

tsu(RXD)

tsu(CRS)

RMII_RXD[1:0]

RMII_CRS_DV

td(TXEN)

td(TXD)

tih(RXD)

tih(CRS)

ai15667

Table 61. Dynamics characteristics: Ethernet MAC signals for RMII

Symbol

Rating

Min

Typ

Max

tsu(RXD)

tih(RXD)

tsu(CRS)

tih(CRS)

td(TXEN)

td(TXD)

Receive data setup time

Receive data hold time

Carrier sense set-up time

Carrier sense hold time

Transmit enable valid delay time

Transmit data valid delay time

1

-

-

1.5

-

-

0

-

-

2

-

-

9

11

13

9

11.5

14

Unit

ns

112/173

Doc ID 17050 Rev 8

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