FEATURES
• Monolithic device which integrates software selectable full-featured T1 and E1 framers and T1 and E1 short haul and long haul line interfaces.
• Meets or exceeds T1 and E1 shorthaul and longhaul network access specifications including ANSI T1.102, T1.403, T1.408, AT&T TR 62411, ITU-T G.703, G.704 as well as ETSI 300-011, CTR-4, CTR-12 and CTR-13.
• Provides encoding and decoding of B8ZS, HDB3 and AMI line codes.
• Provides receive equalization, clock recovery and line performance monitoring.
• Provides transmit jitter attenuation and digitally programmable long haul and short haul line build out.
• Provides on-board programmable binary sequence generators and detectors for error testing including support for patterns recommended in ITU-T O.151.
• Provides three full-featured HDLC controllers, each with 128-byte transmit and receive FIFO buffers.
• Automatically generates and transmits DS-1 performance report messages to ANSI T1.231 and ANSI T1.408 specifications.
• Compatible with Mitel ST®-bus, AT&T CHI® and MVIP PCM backplanes, supporting rates of 1.544 Mbit/s, 2.048 Mbit/s, 4.096 Mbit/s, and 8.192 Mbit/s. Up to four COMET devices may be byte-interleaved on a single backplane with no external circuitry.
• Supports NxDS0 fractional bandwidth backplane.
• Provides an 8-bit microprocessor bus interface for configuration, control, and status monitoring.
• Uses line rate system clock.
• Provides a IEEE P1149.1 (JTAG) compliant test access port (TAP) and controller for boundary scan test.
• Implemented in a low power 5 V tolerant +3.3 V CMOS technology.
• Available in a high density 80-pin MQFP (14 mm by 14 mm) package or an 81-ball CABGA (9 mm by 9 mm) package.
• Provides a -40°C to +85°C Industrial temperature operating range.

APPLICATIONS
• T1/E1 Wireless Digital Loop Carriers (DLCs) and Cellular Base Stations
• T1/E1 Internet Access Equipment
• T1/E1 Channel Service Units (CSU)
• T1/E1 Frame Relay Interfaces
• T1/E1 ATM Interfaces
• T1/E1 Multiplexers (CPE MUX)
• Digital Private Branch Exchanges (PBX)
• Digital Access Cross-Connect Systems (DACS) and Electronic DSX CrossConnect Systems (EDSX)
• ISDN Primary Rate Interfaces (PRI)
• Test Equipment