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參數(shù)資料
| 型號(hào)： | L64381 |
| 廠商： | LSI Corporation |
| 英文描述： | 4-Port Ethernet Controller(四端口以太網(wǎng)控制器) |
| 中文描述： | 4端口以太網(wǎng)控制器（四端口以太網(wǎng)控制器） |
| 文件頁(yè)數(shù)： | 14/109頁(yè) |
| 文件大?。?/td> | 815K |
| 代理商： | L64381 |
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1-4
Introduction
1.2.1.3 Twisted-Pair (10BASE-T) Transceivers
Integrated transceiver interface
Collision detect
Link integrity test
Loopback test capabilities
Autopolarity detection and correction
1.2.1.4 Attachment Unit Interface (AUI) Transceivers
Signal Quality Error test (Heartbeat)
Smart receive squelch for receive data
Smart SQE squelch for collision detection
10BASE-2, 10BASE-5, or 10BASE-F interface
1.2.2
Internal
Architecture
This subsection highlights the features of the internal architecture:
Independent 128-Byte Transmit and Receive FIFOs per Ethernet port
Autotransmit on collision feature. First 64 transmit bytes buffered on
chip to allow retransmission on collision without requiring bus trans-
actions for first 64 bytes of packet
Ability to generate or suppress FCS
Next packet to transmit is queued while previous packet is still being
transmitted, thus providing multiple back-to-back packet transmis-
sions without wasted bandwidth
Statistics per Ethernet core maintained on chip
All registers are fully observable, most are controllable
1.2.3
Bus Interface
This subsection summarizes the key features of the L64381 bus interface:
32-bit data bus width
Up to 48 ports (12 devices) at 20 Mbit/s can be connected based on
approximately 1-Gbit bandwidth
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