S5L9284D
DIGITAL SIGNAL PROCESSOR
A. Preamble
It is used to discriminate between the block sync of data and L/R-channel of data.
L-CH SYNC (Except for block sync)
R-CH SYNC
Block SYNC (L-CH)
4 bit
Figure 14. Preamble Signal
B. Control signal
(1) Validity bit: It indicate that the error of 16-bit audio data exists, or doesn’t (“H” : error, “L”: valid data)
(2) User definable bit: Subcode data input.
S0S1
PBFR
SBCK
SBDT
SYNC PATTERN
P
QRS T UV W P
Figure 15. Timing Chart of Digital Audio Out
(3) Channel status bit: The upper 4-bit of subcodes Q indicate the number of channels, pre-emphasis copy and
CDP category, etc.
S0S1
SQOT
H
ID0 ID1 COPY EMPH
PBFR
Figure 16. Timing Chart of Channel Status Data Output
(4) Parity bit: Making even parity
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