參數(shù)資料
型號： MVTX2803AG
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： Unmanaged 8-Port 1000 Mbps Ethernet Switch
中文描述： DATACOM, LAN SWITCHING CIRCUIT, PBGA596
封裝： 40 X 40 MM, 2.33 MM HEIGHT, MS-034, HSBGA-596
文件頁數(shù)： 27/127頁
文件大小： 1706K
代理商： MVTX2803AG
MVTX2803
Data Sheet
27
Zarlink Semiconductor Inc.
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 selecting the primary forwarding port for each group, it does not
take the source port into account. To prevent this, simply apply one additional filter, so as to block that
forwarding port for this multicast packet.
9.0 LED Interface
9.1 Introduction
The MVTX2803AG 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 MVTX2803AG 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.
For some LED signals, the interface also provides a blinking option. Blinking may be enabled for LED signals
TxD, RxD, COL, and FC (to be described later). The pin LED_BLINK is used to enable blinking, and the
blinking frequency is around 160 ms.
9.2 Serial Mode
In serial mode, the following pins are utilized:
LED_SYNCO – a sync pulse that defines the boundary between status frames
LED_CLKO – the clock signal
LED_DO – a continuous serial stream of data for all status LEDs that repeats once every frame time
In each cycle (one frame of status information, or one sync pulse), 16
×
8 bits of data are transmitted on the LED_DO
signal. The sequence of transmission of data bits is as shown in the figure below:
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MVTX2803AG2 制造商:Microsemi Corporation 功能描述:
MVTX2804 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:8-Port 1000 Mbps Ethernet Distributed Switch
MVTX2804AG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:8-Port 1000 Mbps Ethernet Distributed Switch
MVTX2804AG2 制造商:Microsemi Corporation 功能描述:
MVU10-10FBK 功能描述:端子 D-10-1103K BS-33-10-P 85299 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點電鍍:Tin over Nickel 觸點材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp
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