Product Summary

The MT8930CE is a Subscriber Network Interface Circuit. It implements the ETSI ETS 300-012, CCITT I.430 and ANSI T1.605 Recommendations for the ISDN S and T reference points. Providing point-to-point and point-to-multipoint digital transmission, the SNIC may be used at either end of the subscriber line (NT or TE). An HDLC D-channel protocoller is included and controlled through a Motorola/Intel microprocessor port. A controllerless mode allows the SNIC to operate without a microprocessor. The MT8930CE is fabricated in Mitel’s CMOS process. The applications of the MT8930CE include ISDN NT1, ISDN S or T interface, ISDN Terminal Adaptor (TA), Digital sets (TE1) - 4 wire ISDN interface, Digital PABXs, and Digital Line Cards (NT2).

Parametrics

MT8930CE absolute maximum ratings: (1)Supply Voltage VDD: -0.3 to 7.0 V; (2)Voltage on any I/O pin VI/O: -0.3 to VDD + 0.3 V; (3)Current on any I/O pin II/O: 20mA; (4)Storage Temperature TST: -65 to 150℃; (5)Package Power Dissipation PD: 1000mW.

Features

MT8930CE features: (1)ETS 300-012, CCITT I.430 and ANSI T1.605 S/T interface; (2)Full-duplex 2B+D, 192kbit/s transmission; (3)Link activation/deactivation; (4)D-channel access contention resolution; (5)Point-to-point, point-to-multipoint and star configurations; (6)Master (NT)/Slave (TE) modes of operation; (7)Exceeds loop length requirements; (8)Complete loop back testing capabilities; (9)On chip HDLC D-channel protocoller; (10)8 bit Motorola/Intel microprocessor interface; (11)Controllerless or microprocessor-controlled operation; (12)Mitel ST-BUS interface; (13)Low power CMOS technology; (14)Single 5 volt power supply.

Diagrams

MT8930CE block diagram