參數(shù)資料
型號(hào): MVTX2804
廠商: Zarlink Semiconductor Inc.
英文描述: 8-Port 1000 Mbps Ethernet Distributed Switch
中文描述: 8端口1000 Mbps以太網(wǎng)交換機(jī)分布式
文件頁(yè)數(shù): 19/174頁(yè)
文件大?。?/td> 2249K
代理商: MVTX2804
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MVTX2804
Data Sheet
19
Zarlink Semiconductor Inc.
because there is only one bus master, there can never be any conflict between reading and writing the
configuration registers.
2.3.1 Ethernet Frames
The CPU interface is also responsible for receiving and transmitting standard Ethernet frames to and from the
CPU. To transmit a frame from the CPU
The CPU writes a “data frame” register (address 011) with the data it wants to transmit. After writing all the data,
it then writes the frame size, destination port number, and frame status.
The MVTX2804 forwards the Ethernet frame to the desired destination port, no longer distinguishing the fact
that the frame originated from the CPU.
To receive a frame into the CPU
The CPU receives an interrupt when an Ethernet frame is available to be received.
Frame information arrives first in the data frame register. This includes source port number, frame size, and
VLAN tag.
The actual data follows the frame information. The CPU uses the frame size information to read the frame out.
In summary, receiving and transmitting frames to and from the CPU is a simple process that uses one direct
access register only.
2.3.2 Control Frames
In addition to standard Ethernet frames described in the preceding section, the CPU is also called upon to
handle special “Control frames,” generated by the MVTX2804 and sent to the CPU. These proprietary frames
are related to such tasks as statistics collection, MAC address learning, aging, etc. All Control frames are 64
bytes long. Transmitting and receiving these frames is similar to transmitting and receiving Ethernet frames,
except that the register accessed is the “Control frame data” register (address 110).
Specifically, there are eight types of control frames generated by the CPU and sent to the MVTX2804:
Note:
Memory read and write requests by the CPU may include VLAN table, spanning tree, statistic counters,
and similar updates.
Memory read request
Memory write request
Learn MAC address
Delete MAC address
Search MAC address
Learn IP Multicast address
Delete IP Multicast address
Search IP Multicast address
In addition, there are nine types of Control Frames generated by the MVTX2804 and sent to the CPU:
Interrupt CPU when statistics counter rolls over
Response to memory read request from CPU
Learn MAC address
Delete MAC address
Delete IP Multicast address
New VLAN port
Age out VLAN port
Response to search MAC address request from CPU
Response to search IP Multicast address request from CPU
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MVTX2804AG 制造商:ZARLINK 制造商全稱(chēng):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(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類(lèi)型:Crimp
MVU10-10FBX 功能描述:端子 BLOCK FORK VNYL INS BTL BS-33-10-P 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(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類(lèi)型:Crimp
MVU10-10FBX-BOTTLE 功能描述:CONN FORK BLOCK INSUL 50PC RoHS:是 類(lèi)別:連接器,互連式 >> 端子 - 鏟形 系列:Scotchlok™ 標(biāo)準(zhǔn)包裝:1 系列:Scotchlok™ 端子類(lèi)型:彈簧,壓接式 接線柱/接片尺寸:10 接線柱 寬度 - 外邊:0.320"(8.13mm) 長(zhǎng)度 - 總體:1.030"(26.16mm) 安裝類(lèi)型:自由懸掛 端子:壓接 線規(guī):10-12 AWG 絕緣體:絕緣 特點(diǎn):- 顏色:黃 包裝:散裝 觸點(diǎn)表面涂層:錫 觸點(diǎn)材料:銅,ETP 絕緣體直徑:0.250"(6.35mm) 材料 - 絕緣體:聚酰胺(PA),尼龍 長(zhǎng)度 - 環(huán)心道末端:0.280"(7.11mm) 長(zhǎng)度 - 末端:0.550"(13.97mm) 內(nèi)部舌簧打開(kāi):- 相關(guān)產(chǎn)品:TR-490-ND - HAND CRIMP TOOL RACHET 10-22 AWGTH-450-ND - TOOL HAND CRIMP 6-26AWGTR-482-ND - TOOL RATCHETING 10-22AWG CRIMP920099-R-ND - TOOL 10-22AWG SCOTCHLOK CRIMP 其它名稱(chēng):000511285879115112858791180611464373