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ADC82124 Dataheets PDF



Part Number ADC82124
Manufacturers ETC
Logo ETC
Description 24 Ports 10/100 Fast Ethernet Switch Controller
Datasheet ADC82124 DatasheetADC82124 Datasheet (PDF)

www.DataSheet4U.com Data Sheet: ACD82124 24 Ports 10/100 Fast Ethernet Switch Controller Rev.1.1.1.F Last Update: November 5, 1998 Subject to Change Please check ACD’s website for update information before starting a design Web site: http://www.acdcorp.com or Contact ACD at: Email: [email protected] Tel: 408-433-9898x115 Fax: 408-545-0930 ACD Confidential Material For ACD authorized customer use only. No reproduction or redistribution without ACD’s prior permission. 1 DataSheet 4 U .com .

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www.DataSheet4U.com Data Sheet: ACD82124 24 Ports 10/100 Fast Ethernet Switch Controller Rev.1.1.1.F Last Update: November 5, 1998 Subject to Change Please check ACD’s website for update information before starting a design Web site: http://www.acdcorp.com or Contact ACD at: Email: [email protected] Tel: 408-433-9898x115 Fax: 408-545-0930 ACD Confidential Material For ACD authorized customer use only. No reproduction or redistribution without ACD’s prior permission. 1 DataSheet 4 U .com ACD Confidential. Do Not Reproduce. Use under Non-Disclosure Agreement only. INTRODUCTORY Data Sheet: ACD82124 Advanced Communication Devices www.DataSheet4U.com Table of Contents 1 2 3 4 5 6 7 8 9 10 11 General Description Main Features System Block Diagram System Description Functional Description Interface Description Register Description Pin Description Timing Description Electrical Specifications Packaging Appendix Address Resolution Logic (The built-in ARL) 3 3 3 4 4 10 16 27 32 38 39 A1 40 ACD Confidential. Do Not Reproduce. Use under Non-Disclosure Agreement only. 2 DataSheet 4 U .com INTRODUCTORY Section Page Data Sheet: ACD82124 www.DataSheet4U.com 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 operate 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 network management features can be supported with the use of ACD’s MIB (ACD80900 Management Information Base) chip. 2. FEATURES Data Sheet: ACD82124 ACD Confidential. Do Not Reproduce. Use under Non-Disclosure Agreement only. • • • • • • • • • • • • • • • • • • 3. SYSTEM BLOCK DIAGRAM FIFO MAC-0 FIFO Buffer Buffer Lookup Engine (2K MAC Addr.) BIST Handler LED Controller PMD/ PHY-0 PMD/ PHY-1 FIFO MAC-1 FIFO Buffer Buffer MX Queue Manager DMX FIFO MAC-22 FIFO Buffer Buffer PMD/ PHY-22 PMD/ PHY-23 FIFO MAC-23 FIFO Buffer Buffer ARL Interface SRAM Interface MIB Interface ACD82124 ARL ACD80800 (11K MAC Addr.) (optional) SRAM MIB ACD80900 (optional) 3 DataSheet 4 U .com INTRODUCTORY 24 ports 10/100 auto-sensing with MII interface Half-duplex operation, with optional full-duplex configuration 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 www.DataSheet4U.com 4. SYSTEM DESCRIPTION The ACD82124 is a single chip implementation of a 24-port Fast Ethernet switch. Together with external ASRAM and transceiver devices, it can be used to build a complete desktop class Fast Ethernet switch. Each individual port can be either auto-sensed or manually selected to run at 10 Mbps or 100 Mbps speed rate, under Half Duplex mode. The ACD82124 Ethernet switch contains three major functional blocks: the Media Access Controller (MAC), the Queue Manager, and the Lookup Engine. There are 24 independent MACs within the ACD82124. The MAC controls the receiving, transmitting, and deferring process of each individual port, in accordance to IEEE 802.3 and 802.3u standard. The MAC logic also provides framing, FCS checking, error handling, status indication and back-pressure flow control functions. Each MAC interfaces with an external transceiver through standard MII interface. The device utilizes ACD’s proprietary BASIQ (Bandwidth Assured Switching with Intelligent Queuing) technology. It is a technology to enforce the first-in-firstout rule of Ethernet Bridge-type devices in a very efficient way. The technology enables a true non-blocking frame switching operation at wire speed for a high throughput and .


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