MT8930B

® CMOS ST-BUS™ FAMILY MT8930B Subscriber Network Interface Circuit Preliminary Information Features www.DataSheet4U.com ISSUE 2 August 1993 CCITT I.430 and ANSI T1.605 S/T interface Full-duplex 2B+D, 192 kbit/s transmission Link activation/deactivation D-channel access contention resolution Point-to-point, point-to-multipoint and star configurations Master (NT)/Slave (TE) modes of operation Exceeds loop length requirements Complete loopback testing capabilities On chip HDLC D-channel protocoller 8 bit Motorola/Intel microprocessor interface Controllerless or microprocessor-controlled operation Mitel ST-BUS interface Low power CMOS technology Single 5 volt power supply Ordering Information MT8930BC 28 Pin Ceramic DIP MT8930BE 28 Pin Plastic DIP MT8930BP 44 Pin PLCC -40°C to +85°C Description The MT8930B Subscriber Network Interface Circuit (SNIC) implements the CCITT I.430 and ANSI T1.605 Recommendations for the ISDN S and T reference points. Providing point-to-point and pointto-multipoint digital transmission, the SNIC may be used at either end of the subscriber line (NT or TE). Applications d e et e d h n gn s e i ta m s a m De 0C 0B d o c ew 893 93 e 8 D-channel protocoller is included and HDLC R N T An T t M controlled through a Motorola/Intel microprocessor r e M ullport. A controllerless o o mode allows the SNIC to N f e r f operate without a microprocessor. S y fo s f t l u a cto r The MT8930B is fabricated in Mitel’s CMOS p...