AC205
PRODUCT
A C 2 0 5
F E AT U R E S
S U M M A R Y
O F
Brief
B E N E F I T S
5-PORT ULTRA LOW POWER 10/100 ETHERNET BRIDGED REPEATER
of silicon integration
•
The highest levelbridged repeater achieved for a
five-port 10/100
•
The AC205 integrates:
• Five transceivers of 10BASE-T/100BASE-TX
• 10M repeater
• 100M repeater
• Two-port bridge including:
- 32 KB memory for address table and packet buffer
- Local MAC address filter
- Address table up to 1K entries
a member of the
•
AC205 is architecture and AC208 product family, with
the same
fabrication technology.
•
Provides seamless integration for WAN connections
•
and system expansion.
Provides lowest overall
form factor
•
repeater hub design andcost and gateway andfor 10/100
SOHO
router
•
•
•
•
•
design.
Utilizes field-proven, industry-standard 10BASE-T/
100BASE-TX Fast Ethernet transceivers to lower
overall system interoperability and reliability risks.
Integrated memory reduces component cost and
manufacturing and testing costs.
Low power consumption and low heat dissipation
allow high design density and low system cost.
EEPROM-configured system parameter enables cost-
sensitive architecture.
Configurable MII or 7-wire interface allows versatile
application with WAN connectivity.
Other members in the product family include AC208,
AC207, AC206 and AC205i.
Provides easy product migration.
•
MII or 7-wire port
•
Fully compliant auto-negotiation
•
Very small package – 100-pin PQFP
•
Very low power – typical < 1.2W
• 280 sq. mm footprint
•
Cable detect mode – typical < .20W
•
Power down mode – typical < .05W
• Selectable TX drivers for 1:1 or 1.25:1 transformers to enable
additional power reduction
AC205 Application with AC208 System Block Diagram
CPU
MII
7-wire
AC205
...5...
ALTIMA COMMUNICATIONS, INC. CONFIDENTIAL
A C 2 0 5
O V E R V I E W
AC205 Block Diagram
32 KB
RAM
• Integrated PHY, Repeater and Bridge
MII
Bridge
10M/1b
MII
• Integrated Packet Buffer Memory
• Integrated 1K MAC
• Programmable LEDs via EEPROM
• MII or Reversed MII or 7-wire Interface
100M/5b
R_100
...
10M/1b
RBP
100M/5b
MII
MII/
7-Wire
M
U
X
R_10
...
MUX
P
H
Y
P
H
Y
P
H
Y
P
H
Y
P
H
Y
7 Wire
(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
Embedded System
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