DATA SHEET
Integrated Circuit Systems, Inc.
Document Type: Data Sheet
ICS1892
ICS1892
10Base-T/100Base-TX Integrated
Document Stage: Released
PHYceiver™
10Base-T/100Base-TX Integrated PHYceiver
General
Features
The ICS1892, an enhanced version of the ICS 1890, is a
fully integrated, physical-layer device (PHY) that is
compliant with both the 10Base-T and 100Base-TX
CSMA/CD Ethernet Standard, ISO/IEC 8802-3.
• 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
The ICS1892 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 cable with attenuation in
excess of 24 dB at 100 MHz. With this ICS-patented
technology, the ICS1892 can virtually eliminate errors from
killer packets.
• Low-power, 0.5-micron CMOS
• Single 5.0-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
The ICS1892 supports a broad range of applications: data
terminal equipment (network interface cards and
motherboards), switches, repeaters, bridges, and routers. Its
Media Independent Interface (MII) supports direct
chip-to-chip and motherboard-to-daughterboard
connections as well as connections to an MII connector and
cable. The ICS1892 also provides a Serial Management
Interface for exchanging command and status information
with a Station Management (STA) entity.
• 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
The ICS1892 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 done manually (with input pins or control register
settings) or automatically (using the Auto-Negotiation
features). When the ICS1892 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.
• MAC/Repeater Interface can be configured as:
– 10M or 100M Media Independent Interface
– 100M Symbol Interface (bypasses the PCS)
– 10M 7-wire Serial Interface
• Provides Loopback Modes for Diagnostic Functions
• Small Footprint 64-pin Low-Profile LQFP and MQFP
packages available
ICS1892 Block Diagram
100Base-T
PCS
•
•
Frame
CRS/COL
Detection
10/100 MII or
Alternate
MAC/Repeater
Interface
Twisted-
Pair
Interface to
Magnetics
Modules and
RJ45
Interface
MUX
Integrated
Switch
•
•
Parallel to Serial
4B/5B
10Base-T
Connector
MII
Low-Jitter
Clock
Synthesizer
Auto-
Negotiation
Configuration
and Status
Extended
Register
Set
MII Serial
Management
Interface
Clock
Power
LEDs and PHY
Address
1892 Rev. D, 2/26/01
ICS reserves the right to make changes in the device data identified in
IDT™ / ICS™ 10Base-T/100Base-TX Integrated PHYceiver™
ICS1892
this publication without further notice. ICS advises its customers to
obtain the latest version of all device data to verify that any information
1
being relied upon by the customer is current and accurate.
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
