Mdio

[Altera_Forum]

Does Altera have an MDIO core in the SOPC builder , or mega functions? 

I want to use the MDIO STA master to configure phy device on the board.

[Altera_Forum]

Sure.  

MDIO core is one of the standard modules provided by SOPC builder. For instantiating the core refer to chapter 13 of Embedded IP User Guide document.

[Altera_Forum]

Thankyou, so much. 

I have the SOPC builder running with Cyclone III, device and i have a few controllers in it. Its a tested project and runs....But I cant see the MDIO CORE on the Left to add to the project....please help where am i going wrong.

[Altera_Forum]

Has anybody got MDIO master core OR code that I can import in SOPC builder please? thanks.

[Altera_Forum]

Probably the availability of MDIO core in SOPC builder depends on the version and the licence. I don't know which one includes it and which not. I tried to browse Altera website by I could not find this information. 

 Basically, MDIO is like I2C; then you can use one of the i2c cores available on opencores.org. If you choose one with wishbone interface, the connection to Avalon bus as a MM device is straightforward. You need a minimal experience with component definition in order to integrate it in sopc builder.  Anyway, if you only need MDIO to configure a PHY and don't need great performance, the simplest solution is to implement it with two PIOs and bit bang the communication protocol.  Cris

[Altera_Forum]

--- Quote Start ---  Has anybody got MDIO master core OR code that I can import in SOPC builder please? thanks.  --- Quote End ---    Hi you can use Qsys and create a project with Nios II and Ethernet MDIO .and use this code for MDIO read and write.  // writing  IOWR_32DIRECT(ETH_MDIO_0_BASE,0x84,0x80000001);   IOWR_32DIRECT(ETH_MDIO_0_BASE,0x80,0x0000b55d);   //Reading  IOWR_32DIRECT(ETH_MDIO_0_BASE,0x84,0x80000001);  data32 = IORD_32DIRECT(ETH_MDIO_0_BASE, 0x80);