STM32F407RGH7TR 查看數據表（PDF） - STMicroelectronics

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STM32F407RGH7TR

ARM Cortex-M4 32b MCU+FPU, 210DMIPS, up to 1MB Flash/192+4KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

STMicroelectronics 

Application block diagrams

STM32F405xx, STM32F407xx

A.3

Ethernet interface solutions

Figure 90. MII mode using a 25 MHz crystal

XTAL

25 MHz

MCU

STM32

Ethernet

MAC 10/100

HCLK(1)

IEEE1588 PTP

Timer

input

TIM2

trigger

Timestamp

comparator

MII_TX_CLK

MII_TX_EN

MII_TXD[3:0]

MII_CRS

MII_COL

MII_RX_CLK

MII_RXD[3:0]

MII_RX_DV

MII_RX_ER

MDIO

MDC

PPS_OUT(2)

Ethernet

PHY 10/100

MII

= 15 pins

MII + MDC

= 17 pins

OSC

PLL

HCLK

MCO1/MCO2 PHY_CLK 25 MHz XT1

1. fHCLK must be greater than 25 MHz.

2. Pulse per second when using IEEE1588 PTP optional signal.

Figure 91. RMII with a 50 MHz oscillator

MS19968V1

MCU

HCLK(1)

STM32

Ethernet

MAC 10/100

IEEE1588 PTP

Timer

input

TIM2

trigger

Timestamp

comparator

RMII_TX_EN

RMII_TXD[1:0]

RMII_RXD[1:0]

RMII_CRX_DV

RMII_REF_CLK

MDIO

MDC

Ethernet

PHY 10/100

RMII

= 7 pins

RMII + MDC

= 9 pins

OSC

50 MHz

/2 or /20

2.5 or 25 MHz synchronous 50 MHz

PLL

HCLK

PHY_CLK 50 MHz XT1

1. fHCLK must be greater than 25 MHz.

50 MHz

MS19969V1

174/185

DocID022152 Rev 4

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