M34116 Datasheet - STMicroelectronics

DESCRIPTION
The M34116 is a product specifically designed for applications in PCM digital exchanges. It is able to handle up to 64 channels in any conferences combination from 1 to 29 conferences in parallel and to generate seven different tones and one melody.

■ HW AND SW COMPATIBLE WITH M116
■ 1 TO 64 SERIAL CHANNELS PER FRAME (CONTROLLED BY SYNC SIGNAL PERIOD)
■ 29 MAXIMUM CONFERENCES
■ 1 TO 64 SERIAL CHANNELS PER CONFERENCES
■ 3 SIMULTANEOUS OPERATION MODES AVAILABLE: CONFERENCE, TRANSPARENT AND TONE GENERATION
■ TYPICAL BIT RATES: 1536/1544/2048/4096Kbits/s
■ COMPATIBLE WITH ALL KINDS OF PCM FORMAT
■ µ AND A LAW (PIN PROGRAMMABLE)
■ EQUAL PRIORITY TO EVERY CHANNEL
■ ONE FRAME AND ONE CHANNEL DELAY FROM SENDING TO RECEIVING
■ OVERFLOW INFORMATION FOR EACH CONFERENCE BY PIN OS (OVERFLOW SIGNALLING) AND ON DATA BUS ON MPU REQUEST
■ INSTRUCTION SET COMPATIBLE WITH M3488
■ PROGRAMMABLE INPUT AND OUTPUT ATTENUATION OR GAIN FROM 0 TO 15dB WITH STEP OF 1dB FOR EACH CHANNEL
■ TONE GENERATION FROM 3.9Hz TO 3938Hz WITH MIN. STEP OF 3.9Hz
■ TOTAL OF 7 DIFFERENT TONE OUTPUTS IN PARALLEL PROGRAMMABLE VIA MPU (MAXIMUM 4 DIFFERENT FREQUENCIES
■ AND DURATIONS)
■ 1 MELODY OF MAXIMUM 32 PROGRAMMABLE FREQUENCIES AND DURATIONS
■ 5V POWER SUPPLY
■ TTL COMPATIBLE INPUT LEVELS, CMOS/TTL COMPATIBLE OUTPUT LEVELS
■ MAIN INSTRUCTIONS CONTROLLED BY MICROPROCESSOR INTERFACE:
    – Channel connection to a conference
    – Channel attenuation or gain
    – Channel disconnection from both conference and transparent modes
    – Tone and melody generation
    – Overflow status
    – Operatingmode
    – Channel status