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AC207-DS01-R

更新时间： 2024-01-27 14:16:50
品牌 Logo 应用领域
博通 - BOARDCOM 局域网（LAN）标准
页数 文件大小 规格书
60页 723K
描述
2.5V 10/100-TX 8-Port Repeater with Integrated Bridge

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AC207-DS01-R 数据手册

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ADVANCE DATA SHEET  
ꢀ AC207  
2.5V 10/100-TX 8-Port Repeater with Integrated Bridge  
•
Patent-pending DC restoration technique reduces off-  
set/baseline wander.  
G E N E R A L D E S C R I P T I O N  
•
•
•
IEEE 802.3u-compliant auto-negotiation.  
Unique scrambler seed for all port for better EMI.  
Supports in the 9th ports for media independent inter-  
face (MII) or 7-wire interface to connect to MAC.  
Non-blocking 10/100M bridge with MAC. One segment  
of a bridge is fixed to 100 Mbps while the other seg-  
ment can be configured for 10 or 100 Mbps.  
Bridge functions include:  
The AC207 is an unmanaged 8-port 10/100-Mbps repeater  
with an integrated bridge. The AC207 provides a low-cost  
and integrated solution for unmanaged repeater  
applications.  
•
•
The AC207 is a Class II Repeater. The device provides  
eight 10/100-Mbps copper media ports. The AC207 also  
provides one selectable MII/7-wire interface. The MII/7-wire  
interface can be connected to a MAC. The AC207 provides  
10/100-Mbps auto-negotiation and parallel detection for all  
ports. However, the option to configure each transceiver  
port via EEPROM interface is available. The AC207  
provides two internal repeater state machines, one  
operating at 10 Mbps and the other at 100 Mbps. Once the  
technology is set, the device automatically connects each  
port to the appropriate repeater segment.  
- Embedded 32K bytes memory for address table and  
packet buffer.  
- Local MAC address filtering.  
- XOR hashing scheme.  
- Short routing decision time.  
- Forwarding schemes: store-and-forward.  
- Address table up to 1K entries.  
Programmable LED display for activity, link, speed, par-  
tition, utilization, and collision rate.  
•
•
The AC207 integrates repeater and bridge technologies  
with store-and-forward forwarding mechanisms.  
Advanced power management includes:  
- Each transceiver port can be turned off indepen-  
dently.  
F E A T U R E S  
- Standby mode, which reduces power when the port  
is not connected.  
Low power 2.5V 0.25µm CMOS implementation with  
128-pin QFP package.  
•
Low power (<1A total current consumption when used  
with 1.25;1 transformer) eight port 10/100-Mbps  
repeater with built-in bridge function.  
MDC/MDIO for control/status of transceiver compo-  
nents.  
Eight integrated 10/100-Mbps IEEE 802.3u compliant  
transceivers.  
Fully integrated adaptive equalizer provides phase/  
amplitude compensation for various cable lengths up to  
30dB @ 100 MHz.  
•
•
Input tolerance to 3.3V  
•
•
•
2 5 6 K b it s  
R A M  
B r id g e  
M II  
M II  
1 0 M R B P  
1 0 0 M R B P  
R _ 1 0 0  
R _ 1 0  
. . .  
. . .  
1 0 M  
1 0 0 M  
R B P  
M U X  
M II  
M I I/  
7 - W ir e  
M
U
X
7 W ir e  
P
H
Y
P
H
Y
P
H
Y
P
H
Y
P
H
Y
P
H
Y
P
H
Y
P
H
Y
T X 0  
T X 1  
T X 2  
T X 3  
T X 4  
T X 5  
T X 6  
T X 7  
Figure 1: Functional Block Diagram  
AC207-DS04-405-R  
07/08/02  
16215 Alton Parkway • P.O. Box 57013 • Irvine, California 92619-7013 • Phone: 949-450-8700 • Fax: 949-450-8710  
1234567...60

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