ICS1893 Datasheet, PDF (1/152 Pages) Integrated Circuit Systems – 3.3-V 10Base-T/100Base-TX Integrated PHYceiver™

Integrated Circuit Systems, Inc.
ICS1893
Document Type: Data Sheet
Document Stage: Release
3.3-V 10Base-T/100Base-TX Integrated PHYceiver™
General
The ICS1893 is a low-power, physical-layer device (PHY)
that supports the ISO/IEC 10Base-T and 100Base-TX
Carrier-Sense Multiple Access/Collision Detection
(CSMA/CD) Ethernet standards. The ICS1893 architecture
is based on the ICS1892. The ICS1893 supports managed
or unmanaged node, repeater, and switch applications.
The ICS1893 incorporates digital signal processing (DSP) in
its Physical Medium Dependent (PMD) sublayer. As a result,
it can transmit and receive data on unshielded twisted-pair
(UTP) category 5 cables with attenuation in excess of 24 dB
at 100 MHz. With this ICS-patented technology, the
ICS1893 can virtually eliminate errors from killer packets.
The ICS1893 provides a Serial Management Interface for
exchanging command and status information with a Station
Management (STA) entity.
The ICS1893 Media Dependent Interface (MDI) can be
configured to provide either half- or full-duplex operation at
data rates of 10 MHz or 100 MHz. The MDI configuration
can be established manually (with input pins or control
register settings) or automatically (using the
Auto-Negotiation features). When the ICS1893
Auto-Negotiation sublayer is enabled, it exchanges
technology capability data with its remote link partner and
automatically selects the highest-performance operating
mode they have in common.
Features
• Supports category 5 cables with attenuation in excess of
24 dB at 100 MHz across a temperature range from -5°to
+85°C
• DSP-based baseline wander correction to virtually
eliminate killer packets across temperature range of from
-5°to +85°C
• Low-power, 0.35-micron CMOS (typically 400 mW)
• Single 3.3-V power supply.
• Single-chip, fully integrated PHY provides PCS, PMA,
PMD, and AUTONEG sublayers of IEEE standard
• 10Base-T and 100Base-TX IEEE 802.3 compliant
• Fully integrated, DSP-based PMD includes:
– Adaptive equalization and baseline wander correction
– Transmit wave shaping and stream cipher scrambler
– MLT-3 encoder and NRZ/NRZI encoder
• Highly configurable design supports:
– Node, repeater, and switch applications
– Managed and unmanaged applications
– 10M or 100M half- and full-duplex modes
– Parallel detection
– Auto-negotiation, with Next Page capabilities
• MAC/Repeater Interface can be configured as:
– 10M or 100M Media Independent Interface
– 100M Symbol Interface (bypasses the PCS)
– 10M 7-wire Serial Interface
• Small Footprint 64-pin Thin Quad Flat Pack (TQFP)
ICS1893 Block Diagram
10/100 MII or
Alternate
MAC/Repeater
Interface
Interface
MUX
MII Serial
Management
Interface
MII
Extended
Register
Set
PCS
• Frame
• CRS/COL
Detection
• Parallel to Serial
• 4B/5B
Low-Jitter
Clock
Synthesizer
Clock
100Base-T
PMA
• Clock Recovery
• Link Monitor
• Signal Detection
• Error Detection
10Base-T
TP_PMD
• MLT-3
• Stream Cipher
• Adaptive Equalizer
• Baseline Wander
Correction
Configuration
and Status
Integrated
Switch
Auto-
Negotiation
Twisted-
Pair
Interface to
Magnetics
Modules and
RJ45
Connector
Power
LEDs and PHY
Address
ICS1893 Rev C 6/6/00
ICS reserves the right to make changes in the device data identified in
this publication without further notice. ICS advises its customers to
obtain the latest version of all device data to verify that any information
being relied upon by the customer is current and accurate.
June, 2000