1893YI-10 IDT, Integrated Device Technology Inc, 1893YI-10 Datasheet - Page 44
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1893YI-10
Manufacturer Part Number
1893YI-10
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.1893YI-10.pdf
(152 pages)
Specifications of 1893YI-10
Lead Free Status / RoHS Status
Not Compliant
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7.3 Functional Block: 100Base-X PCS and PMA Sublayers
7.3.1 PCS Sublayer
7.3.2 PMA Sublayer
ICS1893 Rev C 6/6/00
The ICS1893 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 ICS1893 100Base-X PCS sublayer provides two interfaces: one to a MAC/repeater and the other to
the ICS1893 PMA sublayer. An ICS1893’ s PCS sublayer performs the transmit, receive, and control
functions and consists of the following:
•
•
•
Note:
The ICS1893 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:
•
•
•
•
•
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
ICS1893 Data Sheet - Release
When configured for 100M Symbol mode operations, the MAC/Repeater Interface bypasses most
of the PCS. When the ICS1893 MAC/Repeater Interface is in this mode, most of its PCS Transmit
and Receive modules are inactive. However, its PCS control functions (CRS and COL) remain
operational.
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
44
Chapter 7 Functional Blocks
June, 2000
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