Intel
LXT972M Single-Port 10/100 Mbps PHY Transceiver
Datasheet
Document Number: 302875-005
Revision Date: 27-Oct-2005
45
5.7.3
100BASE-X Protocol Sublayer Operations
With respect to the 7-layer communications model, the LXT972M Transceiver is a Physical Layer
1 (PHY) device.
The LXT972M Transceiver implements the following sublayers of the reference model defined by
the IEEE 802.3 standard, and discussed from the reference model point of view:
Section 5.7.3.1, “Physical Coding Sublayer”
Section 5.7.3.2, “Physical Medium Attachment Sublayer”
Section 5.7.3.3, “Twisted-Pair Physical Medium Dependent Sublayer”
Figure 17
shows the LXT972M Transceiver protocol sublayers.
Figure 17. Intel
LXT972M Protocol Sublayers
Encoder/Decoder
Serializer/De-serializer
Link/Carrier Detect
PCS
Sublayer
PMA
Sublayer
MII Interface
Intel LXT972M
Transceiver
100BASE-TX
Scrambler/
De-scrambler
PMD
Sublayer
B3514-01