AC208 Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – 8 PORT ULTRA LOW POWER 10/100 ETHERNET BRIDGED REPEATER

10M RBP
100M RBP
AC208 OVERVIEW
AC208 Block Diagram
32 KB
RAM
Bridge
MII
MII
100M RBP
10M RBP
R_100 R_10
RBP
10M
100M
...
...
MUX
• Integrated PHY, Repeater and
Bridge
• Integrated Packet Buffer Memory
• Integrated 1K MAC
• Programmable LEDs via EEPROM
• Backplane for Cascading
PP P P PP P P
HH H H HH H H
YY Y Y YY Y Y
TX0 TX1 TX2 TX3 TX4 TX5 TX6 TX7
Up Link
The Altima AC208 is a highly integrated 0.25u CMOS silicon
solution. It combines all the functions of a 10/100 dual-speed
bridged repeater including PHY transceiver, two internal
repeaters, two repeater backplane busses for expansion, a two-
port bridge with 32 KB embedded memory.
The AC208 contains eight 10BASE-T/100BASE-TX Fast
Ethernet transceivers, one of which can be configured into a full-
duplex uplink port. The transceivers perform all of the physical
layer interface functions for 10BASE-T Ethernet on Category 3,
4, or 5 unshielded twisted pair (UTP) cable and 100BASE-TX
Fast Ethernet on Category 5 UTP cable.
The AC208 represents a marked improvement over the previous
generation of the dual-speed bridged repeater family AC108R.
Because the memory is embedded in the silicon, the AC208
offers the obvious advantage of cost savings in the discrete
memory device. Additionally, a 128-pin PQFP package means
savings in manufacturing and testing.
Because the AC208 has the smallest footprint and the lowest
power consumption, on a per-port basis, of any micro-LAN
solution, when all system costs are considered — power, heat,
components and real estate — the AC208 provides the lowest
overall system cost and most reliable design.
The AC208 product family includes the AC208, AC207, AC206,
AC205 and AC205i with the following features and
configurations:
• AC208: 128-pin PQFP, eight-port TX with
cascadable backplane
• AC207: 128-pin PQFP, eight-port TX with MII or 7-wire
• AC206: 128-pin PQFP, five-port TX with MII or reversed MII
or 7-wire, cascadable repeater backplane
• AC205: 100-pin PQFP, five-port TX with MII or 7-wire
• AC205i: 100-pin PQFP, five-port TX with MII or 7-wire and
single independent TX port for IP phone
© 2002 by ALTIMA COMMUNICATIONS, INC.
A Broadcom Company. All rights reserved.
AC208-PB03-R-11.01.02
ALTIMA COMMUNICATIONS, INC.
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
ALTIMA COMMUNICATIONS, INC. CONFIDENTIAL