MJ1471 Datasheet (Plessey) - HDB3 OR AMI ENCODER/DECODER

MJ1471, HDB3 OR AMI ENCODER/DECODER

Functions listed by pin number 1.

NAZ dltl In Input data for encoding into ternary form.

The data is clocked by the negatlve *going edge of the Clock (Encoder).

Clock (Encoder) Clock for encoding data on pin 1.

3.AMI/HDB3 MJ1471 operates In HDB3 If pin 3 is at logic '1'.

AMI If pin 31s at logi

MJ1471 2 MBIT PCM SIGNALLING CIRCUIT MJ1471 HDB3 OR AMI ENCODER/DECODER The MJ1471 is an encoder/decoder for pseudo ternary transmission codes.

The codes are true Alternate Mark Inversion (AMI) or AMI modified according to HDB3 rules (CCITT Orange Book Vol 111 2, Annex to Rec.G703).

The device encodes and decodes simultaneously and asynchronously.

Error monitoring functions are provided to detect violations of HDB3 coding and all ones detection (AIS).

In addition a loop test function I