MJ1444 Datasheet (Plessey) - PCM SYNCHRONISING WORD GENERATOR

MJ1444, PCM SYNCHRONISING WORD GENERATOR

Functions Listed by pin number a 1, 2, 5, 7, 13, 14.

Bits 3 to Parallel data on these inputs is asynchronously loaded into bits 3 to 8 of the PISO shift register for transmission during Time slot 0 of non *sync.

frames.

Channel Reset A low going pulse at this input synchronises the MJ1444 with

MJ1444 ~~~I~~~!~ 2 MBIT PCM SIGNALLING CIRCUIT MJ1444 PCM SYNCHRONISING WORD GENERATOR The 2.048 Mbit PCM signalling circuits comprise a group of circuits which will perform the common signalling and error detection functions for a 2.048 Mbit 30 channel PCM transmission link operating to the appropriate CCITT recommendations.

The circuits are fabricated in N-channel metal gate M

MJ1444 Features

* SV ±S% Supply-20mA Typical Fully Conforms to CCITT Recommendation G732 Outputs Directly Onto PCM Data Highway Provides Both Time Slot 0 and Time Slot 16 Channel Pulses All Inputs and Outputs are TTL Compatible Electrical Ratings +Vcc Inputs Outputs 7