82P20516DBF集成電路（IC）的電信規(guī)格書PDF中文資料

Integrates 16 channels E1 short haul line interface units for 120

Ω E1 twisted pair cable and 75 Ω E1 coaxial cable applications

Per-channel configurable Line Interface options

? Fully integrated and software selectable receive and transmit

termination

– Option 1: Fully Internal Impedance Matching with integrated receive

termination resistor

– Option 2: Partially Internal Impedance Matching with common external

resistor for improved device power dissipation

– Option 3: External impedance Matching termination

? Supports global configuration and per-channel configuration to

E1 mode

Per-channel programmable features

? Provides E1 short haul waveform templates and userprogrammable

arbitrary waveform templates

? Provides two JAs (Jitter Attenuator) for each channel of receiver

and transmitter

? Supports AMI/HDB3 (for E1) encoding and decoding

Per-channel System Interface options

? Supports Single Rail, Dual Rail with clock or without clock and

sliced system interface

? Integrated Clock Recovery for the transmit interface to recover

transmit clock from system transmit data

Per-channel system and diagnostic functions

? Provides transmit driver over-current detection and protection

with optional automatic high impedance of transmit interface

? Detects and generates PRBS (Pseudo Random Bit Sequence),

ARB (Arbitrary Pattern) and IB (Inband Loopback) in either

receive or transmit direction

? Provides defect and alarm detection in both receive and transmit

directions.

– Defects include BPV (Bipolar Violation) /CV (Code Violation) and EXZ

(Excessive Zeroes)

– Alarms include LLOS (Line LOS), SLOS (System LOS), TLOS

(Transmit LOS) and AIS (Alarm Indication Signal)

? Programmable LLOS detection /clear levels. Compliant with ITU

and ANSI specifications