Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

TSE MAC and Marvell 88E1111

I'm having trouble to bring up the TSE MAC to Ethernet interface on the Stratix II GX PCIe board. I was able to instantiate a triple speed Ethernet MAC and build logic around it. The loopback at the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The TSE is able to communicate with up to two PHYs through MDIO. You need first to set up the MDIO address of the PHY, with one of those calls:

IOWR_ALTERA_TSEMAC_MDIO_ADDR0(base,data)
IOWR_ALTERA_TSEMAC_MDIO_ADDR1(base,data)
Obviously the first line sets the MDIO address for the PHY number 0 and the second one sets the MDIO address for the PHY number 1. base is tse_mac_base, as you guessed, and data is the MDIO address.

Then you can access the register with one of those calls:
IORD_ALTERA_TSEMAC_MDIO(base, mdio, reg_num)
IOWR_ALTERA_TSEMAC_MDIO(base, mdio, reg_num, data)
The first line reads, the second writes. base is again tse_mac_base, mdio is the PHY number (0 or 1, depending on the call you used to set up the MDIO address), reg_num the MDIO register number, and data is the value to write.