M3488Q1 Datasheet - STMicroelectronics

Main instructions controlled by the microprocessor interface

.CHANNEL CONNECTION/DISCONNECTION
.OUTPUT CHANNEL DISCONNECTION
.INSERTION OF A BYTE ON A PCM OUTPUT CHANNEL/DISCONNECTION
.TRANSFER TO THE MICROPROCESSOR OF A SINGLE PCM OUTPUT CHANNEL SAMPLE
.TRANSFER TO THE MICROPROCESSOR OF A SINGLE OUTPUT CHANNEL CONTROL WORD
.TRANSFER TO THE MICROPROCESSOR OF A SELECTED 0 CHANNEL PCM INPUT DATA
.256 INPUT AND 256 OUTPUT CHANNEL CMOS DIGITAL SWITCHING MATRIX COMPATIBLE WITH M088
.BUILDING BLOCK DESIGNED FOR LARGE CAPACITY ELECTRONIC EXCHANGES, SUB SYSTEMS AND PABX
.NO EXTRA PIN NEEDED FOR NOT-BLOCKING SINGLE STAGE AND HIGHER CAPACITY
SYNTHESIS BLOCKS (512 or 1024 channels)
.EUROPEAN TELEPHONE STANDARD COMPATIBLE (32 serial channels per frame)
.PCM INPUTS AND OUTPUTS MUTUALLY COMPATIBLE
.ACTUAL INPUT-OUTPUT CHANNEL CONNECTIONS STORED AND MODIFIED VIA AN ON CHIP 8-BIT PARALLEL MICROPROCESSOR INTERFACE
.TYPICAL BIT RATE : 2Mbit/s
.TYPICAL SYNCHRONIZATION RATE : 8KHz (time frame is 125µs)
.5V P0WER SUPPLY
.CMOS & TTL INPUT/OUTPUT LEVELS COMPATIBLE
.HIGH DENSITY ADVANCED 1.2µm HCMOS3 PROCESS