DESCRIPTION

The IDT82V2041E can be configured as a single channel T1, E1 or J1 Line Interface Unit. The IDT82V2041E performs clock/data recovery, AMI/B8ZS/HDB3 line decoding and detects and reports the LOS conditions. An integrated Adaptive Equalizer is available to increase the receive sensitivity

and enable programming of LOS levels. In transmit path, there is an AMI/B8ZS/HDB3 encoder and Waveform Shaper.

FEATURES

ï Single channel T1/E1/J1 short haul line interfaces

ï Supports HPS (Hitless Protection Switching) for 1+1 protection

without external relays

ï Programmable T1/E1/J1 switchability allowing one bill of ma

terial for any line condition

ï Single 3.3 V power supply with 5 V tolerance on digital interfaces

ï Meets or exceeds specifications in

- ANSI T1.102, T1.403 and T1.408

- ITU I.431, G.703, G.736, G.775 and G.823

- ETSI 300-166, 300-233 and TBR12/13

- AT&T Pub 62411

ï Software programmable or hardware selectable on:

- Wave-shaping templates

- Line terminating impedance (T1:100 Ω, J1:110 Ω, E1:75 Ω/120 Ω)

- Adjustment of arbitrary pulse shape

- JA (Jitter Attenuator) position (receive path or transmit path)

- Single rail/dual rail system interfaces

- B8ZS/HDB3/AMI line encoding/decoding

- Active edge of transmit clock (TCLK) and receive clock (RCLK)

- Active level of transmit data (TDATA) and receive data (RDATA)

- Receiver or transmitter power down

- High impedance setting for line drivers

- PRBS (Pseudo Random Bit Sequence) generation and detection with 215-1 PRBS polynomials for E1

- QRSS (Quasi Random Sequence Signals) generation and detection with 220-1 QRSS polynomials for T1/J1

- 16-bit BPV (Bipolar Pulse Violation) /Excess Zero/PRBS or QRSS error counter

- Analog loopback, Digital loopback, Remote loopback and Inband loopback

ï Adaptive receive sensitivity up to -20 dB (Host Mode only)

ï Short circuit protection and internal protection diode for line drivers

ï LOS (Loss Of Signal) detection with programmable LOS levels(Host Mode only)

ï AIS (Alarm Indication Signal) detection

ï Supports serial control interface,Motorola and Intel Multiplexed interfaces and hardware control mode

ï Pin compatibe to 82V2081 T1/E1/J1 Long Haul/Short Haul LIU and 82V2051E E1 Short Haul LIU

ï Package:

Available in 44-pin TQFP packages

Green package options available