MJ1444 Datasheet - Plessey

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. 3. 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

MJ1444-Plessey.pdf