AC205 Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – 5-PORT ULTRA LOW POWER 10/100 ETHERNET BRIDGED REPEATER

AC205 OVERVIEW
AC205 Block Diagram
MII/
7-Wire
32 KB
RAM
Bridge
MII
MII
100M/5b
10M/1b
R_100 R_10
RBP
10M/1b
100M/5b
MII
M
U
7 Wire
X
...
...
MUX
PPP PP
HHH HH
YYY YY
• Integrated PHY, Repeater and Bridge
• Integrated Packet Buffer Memory
• Integrated 1K MAC
• Programmable LEDs via EEPROM
• MII or Reversed MII or 7-wire Interface
(TX0) (TX1) (TX2) (TX3) (TX4)
The Altima AC205 is a highly integrated 0.25u CMOS silicon
solution. It combines all the functions of a 10/100 dual-speed
bridged repeater, including PHY transceivers, an MII or 7-wire
hard-wire configurable interface, two internal repeaters, and a
two-port bridge with 32 KB embedded memory.
The AC205 contains five 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 MII and 7-wire compatible MAC interface allows the
AC205 to be designed into many different applications, reducing
the number of separate devices necessary to meet multiple design
requirements.
The AC205 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 AC205
offers the obvious advantage of cost savings in the discrete
memory device. Additionally, a 100-pin PQFP package means
savings in manufacturing and testing.
Because the AC205 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 AC205 provides the lowest
overall system cost and most reliable design.
The AC205 is a member of the AC208 Product Family. The
AC208 Product Family includes the AC208, AC207, AC206,
AC205 and AC205-I 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.
AC205-PB03-R-11.01.02
ALTIMA COMMUNICATIONS, INC.
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
ALTIMA COMMUNICATIONS, INC. CONFIDENTIAL