Transmitter and receiver supporting differing speed codecs over

Details Transmitter and receiver supporting differing speed codecs over Transmitter and receiver supporting differing speed codecs over

1997-12-22

2000-10-03

Olms, Douglas W.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via code word channels

370466, 370490, 370522, H04J 1300

Patent

active

061283177

ABSTRACT:
A synchronous serial protocol is used to transfer data from a host processor (102) to multiple CODECs (112) operating at differing speeds and from such CODECs (112) back to the host processor (102) across a bidirectional pair of serial links (134, 136). A link speed fast enough to accommodate all operating CODECs (112) is utilized. Frames are transmitted across the bidirectional pair of serial links (134, 136) controlled by frame sync (132) and bit clock (130) signals. Each frame has a control word of validity bits followed by one data word for each active CODEC (112). The validity bits determine whether the corresponding data word contains valid data for or from the corresponding CODEC (112).

REFERENCES:
patent: 4813040 (1989-03-01), Futato
patent: 5122875 (1992-06-01), Raychaudhuri et al.

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