●The DP83910A CMOS Serial Network Interface (SNI) is a direct-pin equivalent of the bipolar DP8391 SNI and provides the Manchester data encoding and decoding functions for IEEE 802.3 Ethernet/Thin-Ethernet type local area networks. The SNI interfaces the DP8390 Network Interface Controller (NIC) to the DP8392 CTI or an Ethernet transceiver cable. When transmitting, the SNI converts non-return-to-zero (NRZ) data from the controller into Manchester data and sends the converted data differentially to the transceiver. Conversely, when receiving, a Phase Lock Loop decodes the 10 Mbit/s data from the transceiver into NRZ data for the controller.
●The DP83910A operates in conjunction with the DP8392 Coaxial Transceiver Interface (CTI) and the DP8390 Network Interface Controller (NIC) to form a three-chip set that implements a complete IEEE 802.3 compatible network as shown below. The DP83910A is a functionally complete Manchester encoder/decoder including a balanced driver and receiver, on-board crystal oscillator, collision signal translator, and a diagnostic loopback feature. The DP83910A, fabricated CMOS, typically consumes less than 70 mA of current. However, as a result of being CMOS, the DP83910A"s differential signals must be isolated in both Ethernet and thin wire Ethernet.
● Compatible with Ethernet I, IEEE 802.3; 10BASE5, 10BASE2, and 10BASE-T
● Designed to interface with 10BASE-T transceivers
● Functional and pin-out duplicate of the DP8391
● 10 Mbits/s Manchester encoding/decoding with receive clock recovery
● Requires no precision components
● Loopback capability for diagnostics
● Externally selectable half or full step modes of operation at transmit output
● Squelch circuitry at the receive and collision inputs to reject noise
● TTL/MOS compatible controller interface
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