INT5130 ETC1 [List of Unclassifed Manufacturers], INT5130 Datasheet - Page 16

• Manufacturer Part Number: INT5130
• Description: Integrated Powerline MAC/PHY Transceiver
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

INTELLON CONFIDENTIAL
Rev 8.1
MII Frame Structure
The frame structure transmitted on the MII or GPSI interface is the following sequence of fields:
Interframe Gap
Interframe Gap
A period on the MII interface during which no data activity occurs on the MII.
Preamble
Begins a frame transmission that consists of 7 octets with the following bit values…
10101010 10101010 10101010 10101010 10101010 10101010 10101010
The preamble is stripped by the INT5130 when transmitting (the preamble is not transmitted on the
PLC medium) and pre-pended by the INT5130 when receiving.
Start Frame Delimiter
Indicates the start of a frame and follows the preamble. The SFD bit sequence is 10101011.
The start frame delimiter is stripped by the INT5130 when transmitting (the SFD is not transmitted
on the PLC medium) and pre-pended by the INT5130 when receiving.
INT5130 Integrated Powerline MAC/PHY Transceiver Technical Data Sheet
MII_TX[3:1], MII_TX0
MII_RX[3:0]
MII_RXDV
MII_TXEN
MII_CRS
MII_COL
Figure 9: MII Flow Control Overview Part 2
Preamble
P
Case 6
TX only
16
P
Case 7
TX overrun
Frame
dropped
Start Frame Delimiter
P
Case 8
Collision
ADVANCE INFORMATION
P
Data