- 您现在的位置：买卖IC网 > PDF目录67672 > GT-48004A (Galileo Technology Services, LLC) Four Port Switched Fast Ethernet Controller(四端口、交换式快速以太网控制器) PDF资料下载
参数资料
| 型号： | GT-48004A |
| 厂商： | Galileo Technology Services, LLC |
| 英文描述： | Four Port Switched Fast Ethernet Controller(四端口、交换式快速以太网控制器) |
| 中文描述： | 四端口交换式快速以太网控制器（四端口，交换式快速以太网控制器） |
| 文件页数： | 85/106页 |
| 文件大小： | 953K |
| 代理商： | GT-48004A |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页当前第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页
GT-48004A Four Port Switched Fast Ethernet Controller
N:\Marketing\Docs\Archive\48004A\DATASHEET\Rev 1.0\484ads10.fm
Revision 1.0
8
Figure 1: Typical 16-port 10/100-Mbps Switch Implementation
1.3
Address Recognition
Each GT-48004A in a system can recognize up to 8,000 different Unicast MAC addresses and unlimited Multicast/
Broadcast MAC addresses. An intelligent address recognition mechanism enables filtering and forwarding packets at
full Fast Ethernet wire speed. Hardware assist for address aging and static addresses is also included.
The GT-48004A provides an address self-learning mechanism. Each device has a private address table located in its
DRAM array. As the GT-48004A learns new addresses, it updates all address tables in the system via the GalNet mes-
saging protocol.
1.4
CPU Packet Routing
The GT-48004A has the capability to automatically forward certain packets to the CPU for routing including:
Unicast packets with a destination address tagged for the CPU
Multicast packets
Unknown packets (packets with MAC addresses that have not been recognized)
This gives the system designer the flexibility to decide how to handle such packets in a managed system.
1.5
Intervention Mode
The GT-48004A incorporates an enhanced feature called
intervention mode. This feature permits software or hardware
intervention in the packet routing decision mechanisms for unicast packets. When intervention mode is selected for a
MAC address, the GT-48004A sends the packet to the system CPU instead of switching it as usual. This capability can
be used for many functions including: layer 3 routing, security, virtual LAN support, filtering and management.
1.6
VLAN Support
The GT-48004A supports port based VLANs that allow for efficient filtering of broadcast/multicast domains as well as
isolation of unicast traffic for security. Each port can be defined to be a member of a single VLAN, or as a member of a
“Super-VLAN” that spans one or more simple VLANs. VLAN support in the GT-48004A is described in detail in a sep-
EDO
DRAM
GT-48004A
4
x
MII
MII PHY
Devices
4 x Fast Ethernet
EDO
DRAM
EDO
DRAM
GT-48004A
4
x
MII
MII PHY
Devices
4 x Fast Ethernet
EDO
DRAM
EDO
DRAM
GT-48004A
4
x
MII
MII PHY
Devices
4 x Fast Ethernet
EDO
DRAM
EDO
DRAM
GT-48004A
4
x
MII
MII PHY
Devices
4 x Fast Ethernet
EDO
DRAM
FAST PCI
MEMORY
CPU
GT-64111
SYSTEM
CONTROLLER
WITH FAST PCI
Management CPU is optional.
相关PDF资料 |
PDF描述 |
|---|---|
| GT-48006A | Low Cost Two Port 10/100Mbps Ethernet Bridge/Switch Controller(低成本、双端口10/100Mbps以太网桥式/交换式控制器) |
| GT-48207 | Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高级交换式 10+10/100 BaseX以太网控制器) |
| GT-48208 | Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高级交换式 10+10/100 BaseX以太网控制器) |
| GT-48212 | Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高级交换式 10+10/100 BaseX以太网控制器) |
| GT-64010A | System Controller with PCI Interface for R4XXX/ R5000 Family CPUs(带PCI接口用于R4XXX/ R5000 系列 CPUs的系统控制器) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
发布紧急采购，3分钟左右您将得到回复。