82V2082PFG8

The IDT82V2082 can be configured as a dual channel T1, E1 or J1 Line Interface Unit. In receive path, an Adaptive Equalizer is integrated to remove the distortion introduced by the cable attenuation. The IDT82V2082 also performs clock/data recovery, AMI/B8ZS/HDB3 line decoding and detects and reports the LOS conditions. In transmit path, there is an AMI/ B8ZS/HDB3 encoder, Waveform Shaper and LBOs. There is one Jitter Attenuator, which can be placed in either the receive path or the transmit path. The Jitter Attenuator can also be disabled. The IDT82V2082 supports both Single Rail and Dual Rail system interfaces. To facilitate the network maintenance, a PRBS/QRSS generation/detection circuit is integrated in the chip, and different types of loopbacks can be set according to the applications. Four different kinds of line terminating impedance, 75 ?,100 ?, 110 ? and 120 ? are selectable on a per channel basis. The chip also provides driver short-circuit protection and internal protection diode and supports JTAG boundary scanning. The chip can be controlled by either software or hardware. The IDT82V2082 can be used in LAN, WAN, Routers, Wireless Base Stations, IADs, IMAs, IMAPs, Gateways, Frame Relay Access Devices, CSU/DSU equipment, etc.

• Supports HPS (Hitless Protection Switching) for 1+1 protection without external relays
• Receiver sensitivity exceeds -36 dB@772KHz and -43 dB@1024 KHz
• Programmable T1/E1/J1 switchability allowing one bill of material for any line condition
• Single 3.3 V power supply with 5 V tolerance on digital interfaces
• Cable attenuation indication
• Adaptive receive sensitivity
• Non-intrusive monitoring per ITU G.772 specification
• Short circuit protection and internal protection diode for line drivers
• LOS (Loss Of Signal) and AIS (Alarm Indication Signal) detection
• JTAG interface
• Supports serial control interface, Motorola and Intel Non-Multiplexed interfaces and hardware control mode
• Pin compatible to 82V2042E T1/E1/J1 Short Haul LIU and 82V2052E E1 Short Haul LIU
• Available in 80-pin TQFP and 81-pin FPBGA