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參數(shù)資料
| 型號： | ADM6995 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 5 PORT 10/100 MB/S SINGLE CHIP ETHIERNET SWITCH CONTROLLER |
| 中文描述： | 5端口10/100 Mb / s的單芯片ETHIERNET開關(guān)控制器 |
| 文件頁數(shù)： | 25/57頁 |
| 文件大?。?/td> | 1815K |
| 代理商： | ADM6995 |
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ADM6995L
Function Description
3.13 Memory Block
ADM6995L build in memory is divided as two blocks. One is MAC addressing table and
another one is data buffer.
MAC address Learning Table size is 2048 entry with each entry occupy eight bytes
length. These eight bytes data include 6 bytes source address, VLAN information, Port
information and Aging counter.
Data buffer is divided to 256 bytes/block. ADM6995L buffer management is per port
fixed block number and all port share one global buffer. This architecture can get better
memory utilization and network balance on different speed and duplex test condition.
Received packet will separate as several 256 bytes/block and chain together. If packet
size more than 256 bytes then ADM6995L will chain two or more block to store
receiving packet.
3.14 Switch Functional Description
The ADM6995L uses a “store & forward” switching approach for the following reason:
Store & forward switches allow switching between different speed media (e.g. 10BaseX
and 100BaseX). Such switches require the large elastic buffer especially bridging
between a server on a 100Mbps network and clients on a 10Mbps segment.
Store & forward switches improve overall network performance by acting as a “network
cache”
Store & forward switches prevent the forwarding of corrupted packets by the frame check
sequence (FCS) before forwarding to the destination port.
3.15 Basic Operation
The ADM6995L receives incoming packets from one of its ports, searches in the Address
Table for the Destination MAC Address and then forwards the packet to the other port
within same VLAN group, if appropriate. If the destination address is not found in the
address table, the ADM6995L treats the packet as a broadcast packet and forwards the
packet to the other ports which in same VLAN group.
The ADM6995L automatically learns the port number of attached network devices by
examining the Source MAC Address of all incoming packets at wire speed. If the Source
Address is not found in the Address Table, the device adds it to the table.
ADMtek Inc.
3-9
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM6995L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5 PORT 10/100 MB/s SINGLE CHIP ETHERNET SWITCH CONTROLLER |
| ADM6995LAAT1 | 功能描述:IC SWITCH CNTRLR 10/100 128QFP RoHS:否 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| ADM6995LAAT1NP | 制造商:Infineon Technologies AG 功能描述:SWITCH / PHY |
| ADM6995LCACT1 | 制造商:Infineon Technologies AG 功能描述: |
| ADM6995LCACT1NP | 制造商:Infineon Technologies AG 功能描述:SWITCH / PHY |
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