21145 Phoneline/Ethernet LAN
Controller
Preliminary
Datasheet
Product Features
HomePNA Features
I
Compliant with the
Home Phoneline
Networking Alliance
(HomePNA*)
Specification effort.
I
Integrates a HomePNA PHY for 1 Mb/s
Ethernet-like home networking on
telephone lines.
I
Provides automatic support for dual
HomePNA data transfer rates and dual
transmission power levels.
I
Supports autodetection between
10BASE-T, HomePNA and MII/SYM
ports.
I
Generates an interrupt upon HomePNA
PHY interrupt.
I
Provides a software interface to the
HomePNA PHY internal registers.
Power Management and Power
Saving Features
I
Fully compliant with the
Network Device
Class Power Management Specification
,
Revision 1.0, and the
Communication
Device Class Power Management
Specification
, under the OnNow
Architecture for Microsoft’s
PC97 Design
Guide
,
PC 98 Hardware Design Guide, and
PC 99 Hardware Design Guide
.
I
Supports all wake-up events defined in the
Network Device Class Power Management
Specification
, Revision 1.0 and the
Communication Device Class Power
management Specification.
I
Fully compliant with the
Advanced
Configuration and Power Interface
(ACPI)
Specification
, Revision 1.0
I
Fully compliant with the
PCI Bus Power
Management Interface Specification
,
Revision 1.0.
PCI and CardBus Features
I
Supports PCI and CardBus interfaces for
network and modem access.
I
Supports CardBus cstschg pin and Status
Changed registers.
I
Supports storage of CardBus card
information structure (CIS) in the serial
ROM or the expansion ROM.
Host Interface Features
I
Includes a powerful onchip direct memory
access (DMA) with programmable burst
size, providing low CPU utilization.
I
Supports interrupt mitigation on transmit
and receive.
I
Contains large independent receive and
transmit FIFOs.
Network Side Features
I
Supports three network ports: 10BASE-T
(10 Mb/s), HomePNA (1 Mb/s), and
MII/SYM (10/100 Mb/s).
I
Supports autodetection between
10BASE-T, HomePNA, and MII/SYM
ports.
I
Supports full-duplex operation on both
MII/SYM and 10BASE-T ports.
I
Provides internal and external loopback
capability on all network ports.
I
Supports IEEE 802.3 and ANSI 8802-3
Ethernet standards.
Other Features
I
Provides MicroWire* interface for serial
ROM (1 K and 4 K EEPROM).
I
Incorporates a modem interface that
connects to a wide range of modem
chipsets available in the marketplace.
Order Number: 278256-001
April 1999
Notice:
This document contains preliminary information on new products in production. The
specifications are subject to change without notice. Verify with your local Intel sales office that
you have the latest datasheet before finalizing a design.