ADPCM processor has eight full-duplex channels

The Atelic AT1008F is an eight-full-duplex-channel ADPCM processor which follows the G.726 ITU standard for ADPCM compression for 40, 32, 24 and 16Kbit/s bitrates with selectable u-law and A-law I/O.

The Atelic AT1008F is an eight-full-duplex-channel ADPCM processor which follows the G.726 ITU standard for ADPCM compression for 40, 32, 24 and 16Kbit/s bitrates with selectable u-law and A-law input/output.

The device can operate on 16 channels of PCM to ADPCM compression, 16 channels of ADPCM to PCM decompression, eight channels of full-duplex operation in an 8kHz frame basis, or any combination of m channels of compression plus n channels of decompression when m+n is less than or equal to 16.

Through its three-wire serial port, the AT1008F can be dynamically programmed to perform the ADPCM algorithm at different bitrates, idle or reset the algorithm.

It can also be programmed to set up different input/output time bit-slots, or to select: bypass without compression at 64Kbit/s PCM, idle, or reset the algorithm.

Available in either 28-pin DIP or SOP packages and designed for T1/E1 applications, the component has two clock pins used as PCM/ADPCM data clocks, and the two pins for the two frame sync signals can be programmed to become either as input or as output pins.

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