- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄359243 > MVTX2802 (Zarlink Semiconductor Inc.) Managed 4-Port 1000 Mbps Ethernet Switch PDF資料下載
參數(shù)資料
| 型號(hào)： | MVTX2802 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Managed 4-Port 1000 Mbps Ethernet Switch |
| 中文描述： | 管理4端口1000 Mbps以太網(wǎng)交換機(jī) |
| 文件頁(yè)數(shù)： | 33/154頁(yè) |
| 文件大?。?/td> | 1936K |
| 代理商： | MVTX2802 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)當(dāng)前第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)
MVTX2802
Data Sheet
33
Zarlink Semiconductor Inc.
If a VLAN includes any of the ports in a trunk group, all the ports in that trunk group should be in the same VLAN
member map.
The MVTX2802AG also provides a safe fail-over mode for port trunking automatically. If one of the ports in the
trunking group goes down, the MVTX2802AG will automatically redistribute the traffic over to the remaining
ports in the trunk in unmanaged mode. In managed mode, the software can perform similar tasks.
8.2 Unicast Packet Forwarding
The search engine finds the destination MCT entry, and if the status field says that the destination address
found belongs to a trunk, then the group number is retrieved instead of the port number. In addition, if the
source address belongs to a trunk, then the source port’s trunk membership register is checked to determine if
the address has moved.
A hash key is used to determine the appropriate forwarding port, based on some combination of the source and
destination MAC addresses for the current packet.
The search engine retrieves the VLAN member ports from the VLAN index table, which consists of 4K entries.
The search engine retrieves the VLAN member ports from the ingress port’s VLAN map. Based on the
destination MAC address, the search engine determines the egress port from the MCT database. If the egress
port is member of a trunk group, the packet will be forward to only one port of the trunk group. The VLAN map is
used to check whether the egress port is a member of the VLAN, based on the ingress port. If it is a member,
the packet is forwarded otherwise it is discarded.
8.3 Multicast Packet Forwarding
For multicast packet forwarding, the device must determine the proper set of ports from which to transmit the
packet based on the VLAN index and hash key.
Two functions are required in order to distribute multicast packets to the appropriate destination ports in a port
trunking environment.
Determining one forwarding port per group.
For multicast packets, all but one port per group, the forwarding port, must be excluded.
8.4 Preventing Multicast Packets from Looping Back to the Source Trunk
The search engine needs to prevent a multicast packet from sending to a port that is in the same trunk group
with the source port. This is because, when we select the primary forwarding port for each group, we do not
take the source port into account. To prevent this, we simply apply one additional filter, so as to block that
forwarding port for this multicast packet.
9.0 LED Interface
9.1 Introduction
The MVTX2802AG LED block provides two interfaces: a serial output channel, and a parallel time-division
interface. The serial output channel provides port status information from the MVTX2802AG chip in a
continuous serial stream. This means that a low cost external device must be used to decode the serial data
and to drive an LED array for display.
By contrast, the parallel time-division interface supports a glueless LED module. Indeed, the parallel interface
can directly drive low-current LEDs without any extra logic. The pin LED_PM is used to select serial or parallel
mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MVTX2802AG | Managed 4-Port 1000 Mbps Ethernet Switch |
| MVTX2803 | Unmanaged 8-Port 1000 Mbps Ethernet Switch |
| MVTX2803AG | Unmanaged 8-Port 1000 Mbps Ethernet Switch |
| MVTX2804 | 8-Port 1000 Mbps Ethernet Distributed Switch |
| MVTX2804AG | 8-Port 1000 Mbps Ethernet Distributed Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MVTX2802A | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Managed 4 port Gigabit Ethernet switch |
| MVTX2802AG | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Managed 4-Port 1000 Mbps Ethernet Switch |
| MVTX2803 | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Unmanaged 8-Port 1000 Mbps Ethernet Switch |
| MVTX2803A | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Unmanaged 8 port Gigabit Ethernet switch |
| MVTX2803AG | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Unmanaged 8-Port 1000 Mbps Ethernet Switch |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。