Features
| • | Compatible with IEEE 802.3, 10BASE5, 10BASE2, 10BASE-T |
| • | Dual 16-byte DMA channels |
| • | 16-byte internal FIFO |
| • | Network statistics storage |
| • | Supports physical, multicast and broadcast address filtering |
| • | 10 Mbit/sec Manchester encoding and decoding plus clock recovery |
| • | No external precision components required |
| • | Efficient buffer management implementation |
| • | Transmitter can be selected for half or full step mode |
| • | Integrated squelch on receive and collision pairs |
| • | 3 levels of loopback supported |
| • | Utilizes independent system and network clocks |
| • | Lock Time 5 bits typical |
| • | Decodes Manchester data with up to ±18 ns jitter |
Description The DP83901A Serial Network Interface Controller (SNIC) is a microCMOS VLSI device designed for easy implementation of CSMA/CD local area networks. These include Ethernet (10BASE5), Thin Ethernet (10BASE2) and Twisted-pair Ethernet (10BASE-T). The overall SNIC solution provides the Media Access Control (MAC) and Encode-Decode (ENDEC) functions in accordance with the IEEE 802.3 standard.
The integrated ENDEC module allows Manchester encoding and decoding via a differential transceiver and phase lock loop at 10 Mbit/sec. Also included is a collision detect translator and diagnostic loopback capability.
|
|
