LC89075W-H SANYO [Sanyo Semicon Device], LC89075W-H Datasheet - Page 32

• Manufacturer Part Number: LC89075W-H
• Description: Digital Audio Interface Receiver with Stereo ADC and Audio Selector
• Manufacturer: SANYO [Sanyo Semicon Device]

10.4.6 Data Processing Upon Occurrence of Errors (Lock Error, Parity Error)
• The data processing upon occurrence of an error is described below. If 8 or fewer input parity errors occur in
• Non-PCM data is the data of when bit 1 (non-PCM data detection bit) of the channel status turns to "H" based on the
• Output data is muted when a PLL lock error occurs or a parity error occurs 9 or more times in succession.
• As for the channel status data, the data of the previous block held in 1-bit units is output when a parity error occurs 8
10.4.7 Processing During Error Recovery
• When preambles B, M, and W are detected, the PLL becomes locked and data demodulation begins.
• The demodulation data is output from the LRCKOUT edge after ERRF turns to "L."
succession and transfer data is PCM audio data, the data is replaced by the one saved each in L-ch and R-ch in the
previous frame. However, if the transfer data is non-PCM data, the error data is output as it is.
data detected prior to the occurrence of the input parity error.
or fewer times in succession.
Input parity error (a): If occurs 9 or more times in succession
Input parity error (b): If occurs 8 or fewer times in succession in case of audio data
Input parity error (c): If occurs 8 or fewer times in succession in case of non-PCM burst data
fs calculation result
Demodulation data
Channel status
Data
LRCKOUT
DATAOUT
Input data
Lock Signal
LRCKOUT
DATAOUT
ERRF
ERRF
Figure 10.7 Example of Data Processing upon Parity Error Occurrence
L-1
1 occurrence
Figure 10.8 Data Processing When Data Demodulation Starts
R-1
L-0
PLL Lock Error
Out of range
Table 10.5 Data Processing upon Error Occurrence
Previous value data
R-0
L-2
“L”
“L”
R-2
L-1
Output starts from LRCKOUT edge immediately after ERRF is lowered.
R-ch
R-0
L-3
R-3
L-2
LC89075W-H
Input Parity Error (a)
R-2
L-4
OK
Previous value data
Output
L-ch R-ch
R-4
L-2
“L”
“L”
3ms to 144ms
R-2
L-5
R-5
L-2
• • • • • •
R-2
L-6
Input Parity Error (b)
Previous value data
Previous value data
R-6
L-2
9 times or more muting
Output
R-2
L-7
R-7
L-2
Data
L-8
R-8
Input Parity Error (c)
Previous value data
Output
Output
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