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參數資料
| 型號： | ADC82124 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 24 Ports 10/100 Fast Ethernet Switch Controller |
| 中文描述： | 24端口10/100快速以太網開關控制器 |
| 文件頁數： | 3/48頁 |
| 文件大小： | 411K |
| 代理商： | ADC82124 |
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3
A
I
D
Buffer
Queue Manager
Lookup Engine
(2K MAC Addr.)
LED Controller
BIST Handler
ARL
ACD80800
(11K MAC Addr.)
(optional)
MIB
ACD80900
(optional)
ARL Interface
SRAM
MAC-0
MAC-1
MAC-22
MAC-23
SRAM Interface
MIB Interface
PMD/
PHY-0
PMD/
PHY-1
PMD/
PHY-22
PMD/
PHY-23
MX
DMX
Buffer
Buffer
Buffer
Buffer
Buffer
Buffer
Buffer
FIFO
FIFO
FIFO
FIFO
FIFO
FIFO
FIFO
FIFO
ACD82124
3. SYSTEM BLOCK DIAGRAM
1. GENERAL DESCRIPTION
The ACD82124 is a single chip implementation of a 24
port 10/100 Ethernet switch system intended for IEEE
802.3 and 802.3u compatible networks. The device
includes 24 independent 10/100 MACs. Each MAC
interfaces with an external PMD/PHY device through a
standard MII interface. Speed can be automatically
configured through the MDIO port. Each port can op-
erate at either 10Mbps or 100Mbps. The core logic of
the ACD82124, implemented with patent pending
BASIQ (Bandwidth Assured Switching with Intelligent
Queuing) technology, can simultaneously process 24
asynchronous 10/100Mbps port traffic. The Queue
Manager inside the ACD82124 provides the capability
of routing traffic with the same order of sequence,
without any packet loss.
A complete 24 port 10/100 switch can be built with the
use of the ACD82124, 10/100 PHY and ASRAM. The
MAC addresses can be expanded from the built-in 2K
to 11K by the use of ACD’s external ARL chip
(ACD80800 Address Resolution Logic). Advanced net-
work management features can be supported with the
use of ACD’s MIB (ACD80900 Management Informa-
tion Base) chip.
2. FEATURES
24 ports 10/100 auto-sensing with MII interface
Half-duplex operation, with optional full-duplex con-
figuration by combining 2 adjacent ports
2.4 Gbps aggregated throughput
True non-blocking switch architecture
Flexible port configuration (up to 12 full duplex 10/
100 ports, up to 24 half duplex 10/100 ports)
Built-in storage of 2,000 MAC address
Automatic source address learning
Zero-Packet Loss back-pressure flow control
Store-and-forward switch mode
Port based V-LAN support
UART type CPU management interface
Supports up to 11K MAC addresses with the
ACD80800
RMON and SNMP support with ACD80900
Status LEDs: Link, Speed, Full Duplex, Transmit,
Receive, Collision and Frame Error
Reversible MII option for CPU and expansion port
interface
Wire speed forwarding rate
576 pin BGA package
3.3V power supply, 3.3V I/O with 5V tolerance
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