参数资料
型号: LC89057W-VF4-E
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: 7 X 7 MM, SQFP-48
文件页数: 19/61页
文件大小: 355K
代理商: LC89057W-VF4-E
LC89057W-VF4-E
No. 7202-26/61
8.4.5 Data processing upon error occurrence (lock error, parity error)
The data processing upon occurrence of an error is described below. If 8 or fewer input parity errors occur in
succession, transfer data is replaced by the data saved to L-ch and R-ch in the previous frame in the case of PCM
audio data. However, if the transfer data is non-PCM data, the error data is output as is. Non-PCM data is data when
bit 1 non-PCM data detection bit of the channel status goes "H" based on data detected prior to occurrence of an
input parity error.
Output data is muted upon occurrence of a PLL lock error or when a parity error occurs 9 or more times in
succession.
For the channel status, the data of the previous block is held in 1-bit units when a parity error occurs.
Table 8.5. Data Processing upon Error Occurrence
Data
PLL Lock Error
Input Parity Error (a)
Input Parity Error (b)
Input Parity Error (c)
RDATA output
“L”
Previous value data
Output
fs calculation result
“L”
Output
Channel status
“L”
Previous value data
Validity flag
“L”
Output
User data
“L”
Output
* 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
Figure 8.11 shows an example of data processing upon occurrence of a parity error.
Input data
RERR
RLRCK
RDATA
L-1
R-1
L-2
R-2
L-3
R-3
L-4
R-4
L-1
L-2
R-2
L-0
R-0
1 occurrence
L-5
R-5
L-6
R-6
. . . .
R-0
L-2
R-2
L-2
L-7
R-7
L-8
R-8
R-2
L-2
R-2
L-2
9 times or more: Muting
R-ch
Previous
value data
L-ch, R-ch
Previous
value data
Figure 8.11. Data Processing upon Parity Error Occurrence
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