LC89058W-E Datasheet, PDF (35/64 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC89058W-E
10.4.6 Processing during error recovery
• _{When preambles B, M, and W are detected, PLL becomes locked and data demodulation begins.}
• _{Demodulation data is output from the RLRCK edge after RERR turns to "L".}
RERR
Lock Signal
RLRCK
RDATA
OK
3ms to 144ms
Data
Output start from RWCK edge immediately after RERR is lowered
Figure 10.13 Data Processing When Data Demodulation Starts
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10.5 Data Delimiter Bit 1 Output ( AUDIO )
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• _{AUDIO outputs the channel status data delimiter bit 1 information.}
• _{Outputs bit 1 of the channel status that indicates whether the input bi-phase data is PCM audio data.}
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AUDIO is immediately output upon detection of RERR even during "H" output period.
• _{OR-output with IEC61937 or with the DTS-CD/LD detection flag is also possible with AOSEL.}
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AUDIO
L
H
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Table 10.7 AUDIO Output
Output Conditions
PCM audio data (CS bit 1 = "L")
Non-audio data (CS bit 1 = "H")
10.6 Emphasis Information Output (EMPHA)
• MOUT can output whether there is 50/15μs emphasis parameter for consumer by switching the contents of MOUT
output by MOSEL.
• MOUT is immediately output upon detection of RERR even during "H" output.
MOUT
L
H
Table 10.8 MOUT Output
Output Conditions
No pre-emphasis
50/15μs pre-emphasis
10.7 IEC61937, DTS-CD/LD Detection Flag Output
• A function to output _{IEC61937 and DTS-CD/LD detection flag for non-PCM data is provided.}
• _{DTS-CD/LD is compatible with "14-bit format."}
• _{When bit 1 of channel status is non-PCM data, the IEC61937 sync signal is detected and detection flag is output. If bit}
1 is PCM data, detection flag is not output.
• _{The DTS-CD/LD sync signal detection is done based on the sync pattern and the base frequency. The sync pattern is}
checked every 4096th frame, and the detection status is held until the sync pattern is no longer verified.
•_{The IEC61937 and DTS-CD/LD detection flags can be readout with the microcontroller interface in addition to output}
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to the AUDIO pin by AOSEL. When the UNPCM non-PCM signal output setting is selected through the INT output
contents setting, an interrupt signal is output from INT detecting an IEC61937 or DTS-CD/LD sync signal. Reading
output register from this information can see details of Non-PCM signal. This information is used to read out the
output register and identify the details of the non-PCM signal
• _{The detection flags are cleared when fs is changed or when a PLL lock error or data error occurs.}
No.A1056-35/64