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參數(shù)資料
| 型號(hào)： | GT-48004A |
| 廠商： | Galileo Technology Services, LLC |
| 英文描述： | Four Port Switched Fast Ethernet Controller(四端口、交換式快速以太網(wǎng)控制器) |
| 中文描述： | 四端口交換式快速以太網(wǎng)控制器（四端口，交換式快速以太網(wǎng)控制器） |
| 文件頁(yè)數(shù)： | 80/106頁(yè) |
| 文件大?。?/td> | 953K |
| 代理商： | GT-48004A |
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GT-48004A Four Port Switched Fast Ethernet Controller
75
Revision 1.0
N:\Marketing\Docs\Archive\48004A\DATASHEET\Rev 1.0\484ads10.fm
21.
Switch Expansion
The GT-48004A is designed for switches of up to 16 Fast Ethernet ports. In such a configuration, there are 4 GT-
48004A devices and a single GT-64120 device on the local Fast PCI bus. At 50MHz (66MHz target) board design will
require careful attention to trace lengths, loading effects, etc. Please refer to Galileo’s 16-port GT-48004A reference
design for tips. Expanding beyond 16 ports may be possible through 66MHz PCI-to-PCI bridges, although such a
design will be challenging from a board design standpoint.
For customers not concerned with ultimate performance, it is possible to expand beyond 16 ports by tying the MII inter-
faces of 2 segments together and building a “bridge in a box”. This is, of course, a blocking architecture but is adequate
for lower performance switches, or for those building systems to compete with 10/100 autonegotiating repeaters (seg-
mented repeaters.)
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