초록 ▼

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 op

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).

대표청구항 ▼

[ What is claimed is:] [1.] A data processing system comprising:a first data line;a first subsystem; anda second subsystem coupled to the first subsystem by the first data line, rein:data is transmitted from the first subsystem to the second subsystem on the first data line utilizing a first plurali

[ What is claimed is:] [1.] A data processing system comprising:a first data line;a first subsystem; anda second subsystem coupled to the first subsystem by the first data line, rein:data is transmitted from the first subsystem to the second subsystem on the first data line utilizing a first plurality of signals forming a communications protocol,said communications protocol utilizes a frame having an ordered sequence of bits and comprising:a control codeword comprising a first validity bit and a second validity bit,a first data codeword corresponding to a first channel, anda second data codeword corresponding to a second channel,the first data codeword is valid when the first validity bit is in a first state, and the first data codeword is not valid when the first validity bit is in a second state,the second data codeword is valid when the second validity bit is in the first state, and the second data codeword is not valid when the second validity bit is in the second state,the first validity bit and the second validity bit are set or cleared on a frame by frame basis in the first subsystem, anda first frame is transmitted from the first subsystem to the second subsystem on the first data line.