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參數(shù)資料
| 型號(hào)： | MVTX2603 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Unmanaged 24-Port 10/100 Mb + 2-Port 1 Gb Ethernet Switch |
| 中文描述： | 非托管的24端口的10/100 Mb 2端口千兆以太網(wǎng)交換機(jī)1 |
| 文件頁數(shù)： | 16/109頁 |
| 文件大?。?/td> | 803K |
| 代理商： | MVTX2603 |
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MVTX2603
Data Sheet
16
Zarlink Semiconductor Inc.
The reading and writing from alternating memory banks can be performed with minimal waste of memory
bandwidth. What’s the worst case For any speed port, in the worst case, a 1-byte-long EOF granule gets
written to Bank A. This means that a 7-byte segment of Bank A bandwidth is idle, and furthermore, the next 8-byte
segment of Bank B bandwidth is idle, because the first 8 bytes of the next frame will be written to Bank A, not B.
This scenario results in a maximum 15 bytes of waste per frame, which is always acceptable because the
interframe gap is 20 bytes.
Search engine data is written to both banks in parallel. In this way, a search engine read operation can be
performed by either bank at any time without a problem.
4.4 Memory Requirements
To speed up searching and decrease memory latency, the external MCT database is duplicated in both memory
banks. To support 64 K MCT, 4 MB memory is required. Up to 2 K frame buffers are supported and they will use
3 MB of memory. The maximum system memory requirement is 4 MB. If less memory is desired, the configuration
can scale down proportionally.
Figure 6 - Memory Map
5.0 Search Engine
5.1 Search Engine Overview
The MVTX2603 search engine is optimized for high throughput searching, with enhanced features to support:
Up to 64 K MAC addresses
3 groups of port trunking (1 for the two Gigabit ports, and 2 others)
Traffic classification into 4 (or 8 for Gigabit) transmission priorities, and 2 drop precedence levels
Flooding, Broadcast, Multicast Storm Control
MAC address learning and aging
Port based VLAN
Bank A
Bank B
Frame Buffer
Max MAC Address
1 M
1 M
1 K
32 K
2 M
2 M
2 K
64 k
Table 1 - Memory Configuration
1 M Bank A
1 M Bank B
2 M Bank A
2 M Bank B
0.75 M
0.75 M
1.5 M
1.5 M
0.25 M
0.25 M
0.5 M
0.5 M
Frame Data Buffer (FDR) Area
MAC Address Control Table (MCT) Area
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MVTX2603AG | Unmanaged 24-Port 10/100 Mb + 2-Port 1 Gb Ethernet Switch |
| MVTX2604 | Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch |
| MVTX2604AG | Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch |
| MVTX2801 | Unmanaged 4-Port 1000 Mbps Ethernet Switch |
| MVTX2801AG | Unmanaged 4-Port 1000 Mbps Ethernet Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MVTX2603A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Unmanaged 24 port 10/100Mb + 2 port 1Gb Ethernet switch |
| MVTX2603AG | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 24-Port 10/100 Mb + 2-Port 1 Gb Ethernet Switch |
| MVTX2603AG2 | 制造商:Microsemi Corporation 功能描述: |
| MVTX2604 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch |
| MVTX2604A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MVTX260x Physical Port Control |
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