Line Interface Unit 160-Pin BGA Tray

The IDT82V2054 is a single chip, 4-channel E1 short haul PCM transceiver with a reference clock of 2.048 MHz. The IDT82V2054 contains 4 transmitters and 4 receivers. All the receivers and transmitters can be programmed to work either in Single Rail mode or Dual Rail mode. HDB3 or AMI encoder/decoder is selectable in Single Rail mode. Pre-encoded transmit data in NRZ format can be accepted when the device is configured in Dual Rail mode. The receivers perform clock and data recovery by using integrated digital phase-locked loop. As an option, the raw sliced data (no retiming) can be output on the receive data pins. Transmit equalization is implemented with low-impedance output drivers that provide shaped waveforms to the transformer, guaranteeing template conformance. A jitter attenuator is integrated in the IDT82V2054 and can be switched into either the transmit path or the receive path for all channels. The jitter attenuation performance meets ETSI CTR12/13, ITU G.736, G.742 and G.823 specifications. The IDT82V2054 offers hardware control mode and software control mode. Software control mode works with either serial host interface or parallel host interface. The latter works via an Intel/Motorola compatible 8-bit parallel interface for both multiplexed or non-multiplexed applications. Hardware control mode uses multiplexed pins to select different operation modes when the host interface is not available to the device. The IDT82V2054 also provides loopback and JTAG boundary scan testing functions. Using the integrated monitoring function, the IDT82V2054 can be configured as a 4-channel transceiver with nonintrusive protected monitoring points. The IDT82V2054 can be used for SDH/SONET multiplexers, central office or PBX, digital access cross connects, digital radio base stations, remote wireless modules and microwave transmission systems.

• Fully integrated quad E1 short haul line interface which supports 120 ? twisted pair and 75 ? coaxial applications
• Selectable Single Rail mode or Dual Rail mode and AMI or HDB3 encoder/decoder
• Built-in transmit pre-equalization meets G.703
• Selectable transmit/receive jitter attenuator meets ETSI CTR12/ 13, ITU G.736, G.742 and G.823 specifications
• SONET/SDH optimized jitter attenuator meets ITU G.783 mapping jitter specification
• Digital/Analog LOS detector meets ITU G.775 and ETS 300 233
• ITU G.772 non-intrusive monitoring for in-service testing for any one of channel 1 to channel 3
• Low impedance transmit drivers with high-Z
• Selectable hardware and parallel/serial host interface
• Local and Remote Loopback test functions
• Hitless Protection Switching (HPS) for 1 + 1 protection without relays
• JTAG boundary scan for board test
• 3.3 V supply with 5 V tolerant I/O
• Low power consumption
• Operating temperature range: -40°C to +85°C
• Available in 144-pin Thin Quad Flat Pack (TQFP) and 160-pin Plastic Ball Grid Array (PBGA) packages