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A Single-Chip I2L PCM Codec

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5 Author(s)
Blauschild, R. ; Signetics Corp., Sunnyvale, CA ; Tucci, P. ; Russell, H. ; Purinton, D.
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A single-chip CPCM codec is described. This chip, which is fabricated in bipolar technology, meets all the D3 specifications. The circuit is capable of operating in a fully asynchronous transmit and receive mode, and provisions are made, for zero-code suppression and A/B signaling. Even with this signaling, the codec achieves a worst case idle-channel noise of 13 dBrn C 0.

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Communications, IEEE Transactions on  (Volume:27 ,  Issue: 2 )