- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67672 > GT-48004A (Galileo Technology Services, LLC) Four Port Switched Fast Ethernet Controller(四端口、交換式快速以太網(wǎng)控制器) PDF資料下載
參數(shù)資料
| 型號： | GT-48004A |
| 廠商： | Galileo Technology Services, LLC |
| 英文描述： | Four Port Switched Fast Ethernet Controller(四端口、交換式快速以太網(wǎng)控制器) |
| 中文描述： | 四端口交換式快速以太網(wǎng)控制器（四端口，交換式快速以太網(wǎng)控制器） |
| 文件頁數(shù)： | 96/106頁 |
| 文件大?。?/td> | 953K |
| 代理商： | GT-48004A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁當前第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁
GT-48004A Four Port Switched Fast Ethernet Controller
9
Revision 1.0
N:\Marketing\Docs\Archive\48004A\DATASHEET\Rev 1.0\484ads10.fm
erate document, available on our website.
1.7
Quality-of-Service/Priority Support
The GT-48004A includes the capability to prioritize traffic based on source or destination MAC address, or input port.
Two output priorities are supported. Priority support in the GT-48004A is described in detail in a seperate document,
available on our website.
1.8
Network Management Features
The GT-48004A provides comprehensive management capabilities enabling the switch OEM to implement a wide
range of network management features.
For OEMs offering RMON capability, the GT-48004A provides per-port statistics counters and PCI traffic counters. Also
included in the GT-48004A is a packet sampling capability that can be used to implement RMON using a low cost CPU.
Each port has the ability to take “snapshots” of packet data and counters at programmable intervals. These samples
are forwarded to the management CPU for processing. Source addresses of every errored packet are also sent to the
CPU allowing switch OEM to support error counters in RMON host and matrix groups.
Also included in the GT-48004A is hardware assistance for address aging and bridge spanning tree algorithms.
1.9
DRAM Interface
Each GT-48004A device in the system requires two arrays of fast EDO DRAM (35ns). The DRAMs are used to store
the incoming/outgoing packets as well as the address table and other device data structures. The interface to EDO
DRAM is glueless; all signals needed to control EDO devices are included. For more information, see Section 17. The
35ns EDO DRAMs required for 66MHz operation are available from several vendors including Silicon Magic
(www.simagic.com) and Mosel-Vitelic (www.mosel-vitelic.com). These high-speed DRAMs are priced at almost the
same cost as standard 60ns EDOs.
NOTE: Each bank of EDO is used to service 2 Fast Ethernet Ports. Bank A supports ports 0 and 1; Bank B sup-
ports ports 2 and 3. (The GT-48002A device required only 1 bank for 2 Fast Ethernet ports.)
1.10
Fast PCI Interface
Switch expansion and access to internal management features is possible with the GT-48004A’s PCI interface. The
GT-48004A can be either a master initiating a PCI bus operation or a target responding to a PCI bus operation. Up to
six GT-48004A devices can reside on the same PCI bus segment, forwarding packets from one port to the other with-
out CPU intervention. By using PCI-to-PCI bridge devices1, the switch can be expanded to up to 32 GalNet devices.
The PCI bus may also used to connect to an optional CPU for management, or to connect other high speed LAN adapt-
ers such as ATM and FDDI.
NOTE: The GT-48004A uses a Fast PCI bus which is clocked between 33MHz and 66MHz.
1. 32 to 64 bit PCI bridges are recommended when bridging several devices for additional bandwidth. Contact Galileo for more informa-
tion.
相關PDF資料 |
PDF描述 |
|---|---|
| GT-48006A | Low Cost Two Port 10/100Mbps Ethernet Bridge/Switch Controller(低成本、雙端口10/100Mbps以太網(wǎng)橋式/交換式控制器) |
| GT-48207 | Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高級交換式 10+10/100 BaseX以太網(wǎng)控制器) |
| GT-48208 | Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高級交換式 10+10/100 BaseX以太網(wǎng)控制器) |
| GT-48212 | Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高級交換式 10+10/100 BaseX以太網(wǎng)控制器) |
| GT-64010A | System Controller with PCI Interface for R4XXX/ R5000 Family CPUs(帶PCI接口用于R4XXX/ R5000 系列 CPUs的系統(tǒng)控制器) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| GT482 | 制造商:CORNELL DUBILIER ELECTRONICS 功能描述:Cap Ceramic 82pF 3000V SL 5% (12 X 6mm) Radial 9.5mm 85°C |
| GT48212-A6-PBB1C000 | 制造商:Marvell 功能描述: |
| GT48212-A6-PBB-C000 | 制造商:Marvell 功能描述:12 PORT E + 2 PORT FE SWITCH (MANAGED) - Trays |
| GT48300-A1-BBE1C083 | 制造商:Marvell 功能描述:Marvell GT48300-A1-BBE1C083 |
| GT48300-A1-BBE-C000 | 制造商:Marvell 功能描述:Marvell GT48300-A1-BBE-C000 |
發(fā)布緊急采購，3分鐘左右您將得到回復。