1893CFLFT IDT, 1893CFLFT Datasheet - Page 7

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

Specifications of 1893CFLFT

• Rohs: yes
• Part # Aliases: ICS1893CFLFT

Chapter 3 Overview of the ICS1893CK-40
ICS1893CK-40, Rev. C, 06/02/09
The ICS1893CK-40 is a stream processor. During data transmission, it accepts sequential nibbles from its
MAC (Media Access Control) converts them into a serial bit stream, encodes them, and transmits them
over the medium through an external isolation transformer. When receiving data, the ICS1893CK-40
converts and decodes a serial bit stream (acquired from an isolation transformer that interfaces with the
medium) into sequential nibbles. It subsequently presents these nibbles to its MAC Interface.
The ICS1893CK-40 implements the OSI model’s physical layer, consisting of the following, as defined by
the ISO/IEC 8802-3 standard:
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The ICS1893CK-40 is transparent to the next layer of the OSI model, the link layer. The link layer has two
sublayers: the Logical Link Control sublayer and the MAC sublayer. The ICS1893CK-40 can interface
directly to the MAC.
The ICS1893CK-40 transmits framed packets acquired from its MAC Interface and receives encapsulated
packets from another PHY, which it translates and presents to its MAC Interface.
Note:
Physical Coding sublayer (PCS)
Physical Medium Attachment sublayer (PMA)
Physical Medium Dependent sublayer (PMD)
Auto-Negotiation sublayer
As per the ISO/IEC standard, the ICS1893CK-40 does not affect, nor is it affected by, the
underlying structure of the MAC frame it is conveying.
ICS1893CK-40 Data Sheet Rev. C - Release
Copyright © 2009, Integrated Device Technology, Inc.
All rights reserved.
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Chapter 3 Overview of the ICS1893CK-40
June 2009