MT9079

® CMOS ST-BUS™ FAMILY MT9079 Advanced Controller for E1 Features Meets applicable requirements of CCITT G.704, G.706, G.732, G.775, G.796, I.431 and ETSI ETS 300 011 HDB3, RZ, NRZ (fibre interface) and bipolar NRZ line codes Data link access and national bit buffers (five bytes each) Enhanced alarms, performance monitoring and error insertion Maskable interrupts for alarms, receive CAS bit changes, exception conditions and counter overflows Automatic interworking between CRC-4 and non-CRC-4 multiframing Dual transmit and receive 16 byte circular channel buffers Two frame receive elastic buffer with controlled slip direction indication and 26 channel hysteresis (208 UI wander tolerance) CRC-4 updating algorithm for intermediate path points of a message-based data link application ISSUE 2 May 1995 Ordering Information MT9079AC 40 Pin Ceramic DIP MT9079AE 40 Pin Plastic DIP MT9079AL 44 Pin QFP MT9079AP 44 Pin PLCC -40° to 85 °C Description The MT9079 is a feature rich E1 (PCM 30, 2.048 Mbps) link framer and controller that meets the latest CCITT and ETSI requirements. The MT9079 will interface to a 2.048 Mbps backplane and can be controlled directly by a parallel processor, serial controller or through the ST-BUS. Extensive alarm transmission and reporting, as well as exhaustive performance monitoring and error diagnostic features make this device ideal for a wide variety of applications. Applications Primary rate ISDN network nodes Digital ...