INT5130CS datasheet(17/38 Pages) ETC1

17 / 38 page

INTELLON CONFIDENTIAL

ADVANCE INFORMATION

Rev 8.1

INT5130 Integrated Powerline MAC/PHY Transceiver Technical Data Sheet

Data

Data sent over the MII interface consists of N bytes of data transmitted as 2N nibbles.

The de-assertion of the MII_TXEN signals the End Of Frame (EOF) for data transmitted on the

MII_TX[3:0] pins. Likewise, the de-assertion of the MII_RXDV signals the EOF for data transmitted on

MII_RX[3:0].

Figure 10: Partition of Serial Bit Stream to Nibble Stream

MDI Control Interface

The Management Data Interface connects the external host to the INT5130 for purposes of controlling the

INT5130 and gathering status. A specific frame format and protocol definition exists for exchanging

management frames over this interface. A register definition exists as well that specifies a basic register

set with an extension mechanism. The INT5130 implements the basic register set only.

MDI Timing Diagrams

MII_MDCLK

MII_MDIO

MDI_RVAL

DATA

Figure 11: MDI Receive Timing Diagram

MACs Serial Bit Stream

First nibble

Second nibble

LSB

MSB

MII

Nibble

Stream

LSB

MSB

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