4 mii example schematic, Mii example schematic, Figure 28: mii example schematic – BECKHOFF EtherCAT IP Core for Altera FPGAs v3.0.10 User Manual

Page 92: Ethercat ip core ethernet phy, Optional, 25 mhz

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Ethernet Interface

III-80

Slave Controller

– IP Core for Altera FPGAs

9.2.4

MII example schematic

Refer to chapter 8.5 for more information on special markings (!). Take care of proper compensation of
the TX_CLK phase shift.

EtherCAT IP Core

Ethernet PHY

MII_RX_DV

MII_RX_DATA[3:0]

MII_RX_ERR

MII_TX_ENA

MII_TX_DATA[3:0]

MII_RX_CLK

RX_DV

RXD[3:0]

RX_ER

TX_EN

TXD[3:0]

RX_CLK

TX_CLK

CLK25

CRS

TX_ER

COL

nMII_LINK

LINK_STATUS

! optional

CLK25

PLL

CLK_IN

CLK25

CLK100

25 MHz

MII_TX_CLK

! optional

MII_TX_SHIFT[1:0]

00/01/10/11

NPHY_RESET_OUT

NRESET

Figure 28: MII example schematic

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