NS32491 - Serial Network Interface

The DP8391 Serial Network Interface (SNI) provides the Manchester data encoding and decoding functions for IEEE 802 3 Ethernet Cheapernet type local area networks The SNI interfaces the DP8390 Network Interface Controller (NIC) to the Ethernet transceiver cable When transmitting the SNI converts non

• Y Y Y Y Y Y Y Y Y Y Compatible with Ethernet II IEEE 802 3 10base5 and 10base2 (Cheapernet) 10 Mb s Manchester encoding decoding with receive clock recovery Patented digital phase locked loop (DPLL) decoder requires no precision external components Decodes Manchester data with up to g 20 ns of jitter Loopback capability for diagnostics Externally selectable half or full step modes of operation at transmit output Squelch circuits at the receive and collision inputs reject noise High voltage.