1893AFLFT IDT, 1893AFLFT Datasheet - Page 40

• Manufacturer Part Number: 1893AFLFT
• Description: Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
• Manufacturer: IDT

Specifications of 1893AFLFT

• Rohs: yes
• Part # Aliases: ICS1893AFLFT

7.3 Functional Block: 100Base-X PCS and PMA Sublayers
7.3.1 PCS Sublayer
7.3.2 PMA Sublayer
ICS1893AF, Rev D 10/26/04
The ICS1893AF is fully compliant with clause 24 of the ISO/IEC specification, which defines the 100Base-X
Physical Coding sublayer (PCS) and Physical Medium Attachment (PMA) sublayers.
The ICS1893AF 100Base-X PCS sublayer provides two interfaces: one to a MAC/repeater and the other to
the ICS1893AF PMA sublayer. An ICS1893’s PCS sublayer performs the transmit, receive, and control
functions and consists of the following:
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•
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The ICS1893AF 100Base-X PMA Sublayer consists of two interfaces: one to the Physical Coding sublayer
and the other to the Physical Medium Dependent sublayer. Functionally, the PMA sublayer is responsible
for the following:
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•
•
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PCS Transmit sublayer, which provides the following:
PCS Receive sublayer, which provides the following:
PCS control functions, which provide:
Link Monitoring
Carrier Detection
NRZI encoding/decoding
Transmit Clock Synthesis
Receive Clock Recovery
– Parallel-to-serial conversion
– 4B/5B encoding
– Collision detection
– Serial-to-parallel conversion
– 4B/5B encoding
– Carrier detection
– Code group framing
– Assertion of the CRS (carrier sense) signal
– Assertion of the COL (collision detection) signal
ICS1893AF Data Sheet - Release
Copyright © 2004, Integrated Circuit Systems, Inc.
All rights reserved.
40
Chapter 7 Functional Blocks
October, 2004