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WM8802SCFV 数据表(PDF) 29 Page - Wolfson Microelectronics plc

部件名 WM8802SCFV
功能描述  Digital Audio Interface Transceiver
PDF  65 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8802SCFV 数据表(HTML) 29 Page - Wolfson Microelectronics plc

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WM8802
w
PP Rev 1.1 April 2004
29
DATA
PLL LOCK
ERROR
INPUT PARITY
ERROR (A)
INPUT PARITY
ERROR (B)
INPUT PARITY
ERROR (C)
RDATA output
Low
Low
Previous value data
Output
fs calculation result
Low
Output
Output
Output
Channel status
Low
Low
Previous value data
Previous value data
Validity flag
Low
Low
Output
Output
User data
Low
Low
Output
Output
Table 11 Data Processing upon Error Occurrence
Notes:
1.
Input parity error (A): Occurs 9 or more times in succession
2.
Input parity error (B): Occurs 8 or fewer times in succession, in case of audio data
3.
Input parity error (C): Occurs 8 or fewer times in succession, in case of non-PCM burst data
Figure 20 shows an example of data processing upon occurrence of a parity error.
RERR
RDATA
R-ch
Previous data value
Input Data
RLRCK
An error occurs a single time
Muted after 9 or more
consecutive errors
L-ch R-ch ….
Previous data value
R-2
L-2
R-0
L-1
R-0
L-0
L-2 R-2 L-2 R-2 L-2 R-2 L-2 R-2
L-4
R-3
L-3
R-2
L-2
R-1
R-4 L-5 R-5 L-6 R-6 L-7 R-7 L-8 R-8
L-1
Figure 20 Data Processing Upon Parity Error Occurrence
PROCESSING DURING ERROR RECOVERY
PLL becomes locked and data demodulation begins when preambles B, M and W are detected.
RDATA output data is output from the RLRCK edge after RERR goes Low.



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