Description
The MT9076 is a highly featured single chip solution for terminating T1/E1/J1 trunks. It contains a long haul LIU, an advanced framer, a high performance PLL, and 3 HDLCs.
In T1 mode, the MT9076 supports D4, ESF and SLC-96 formats meeting the latest  ecommendations including AT&T PUB43801, TR-62411; ANSI T1.102, T1.403 and T1.408; Telcordia GR-303-CORE.
In E1 mode, the MT9076 supports the latest ITU-T Recommendations including G.703, G.704, G.706, G.732, G.775, G.796, G.823, G.964 (V5.1), G.965 (V5.2) and I.431. It also supports ETSI ETS 300 011, ETS 300 166, ETS 300 233, ETS 300 324 (V5.1) and ETS 300 347 (V5.2).

FEATUREs
• Combined T1/E1/J1 framer and LIU, with PLL and 3 HDLCs
• In T1/J1 mode the LIU can recover signals attenuated by up to 43dB (7000ft of 22 AWG cable)
• In E1 mode the LIU can recover signals attenuated by up to 43dB (2200m of 0.65mm cable)
• Low jitter digital PLL (intrinsic jitter < 0.02UI)
• HDLCs can be assigned to any timeslot
• Comprehensive alarm detection, performance monitoring and error insertion functions
• 2.048Mbit/s or 8.192Mbit/s ST-BUS streams
• Support for Inverse Mux for ATM (IMA)
• Support for V5.1 and V5.2 Access Networks
• 3.3V operation with 5V tolerant inputs
• Intel or Motorola non-multiplexed 8-bit microprocessor port
• JTAG boundary scan

APPLICATIONs
• E1/T1 add/drop multiplexers
• Access networks
• Primary rate ISDN nodes
• Digital Cross-connect Systems (DCS)