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參數(shù)資料
型號(hào): W88113C
廠商: WINBOND ELECTRONICS CORP
英文描述: ATAPI CD-ROM DECODER & CONTROLLER
中文描述: ATAPI的CD - ROM解碼器
文件頁數(shù): 95/102頁
文件大?。?/td> 573K
代理商: W88113C
W88113C
Publication Release Date: Mar. 1999
- 91 - Revision 0.61
5.4.13 Decoder Processing Flow
T-1
T
T-2
T+1
T+2
DSP data
sector T
in block N
setor T+1
in block N+1
sector T+2
in block N+2
T+1
Buffering
decoding
target
BUFEN(0Ah.2)
T
DDBH/L (RTC)
SRIb(01h.5)
monitor to buffer
T-1
N-1
N
N+1
T
T+1
T+2
Note: (N - 1) is the value that set to DDBH/L
target is found
no interrupt if
ATMSEN(9Ah.6)=1
N-1
N
N+1
DDBH/L (BIC)
5.4.14 Buffer-Independent-Correction
Buffer-Independent-Correction (BIC)
is enabled if
BICEN (9Ah.7)
is high. In
BIC
mode, the correction
is triggered when the sectors not decoded in buffer is larger than one. In
BIC
mode, the
DDBH/L
(29h/28h)
controls the decoding block and increments at the end of EDC-checking, except erroneous
sectors. Meanwhile, the buffering block (internal) increments at each sync. Because of the
independence of the buffering block and decoding block, the
automatic repeat correction
can be
enabled by setting
RCLIM3-0 (9Ch.3-0)
the maximum rounds of repeat correction.
T
T+1
T+2
T+3
T+4
T
T+1
T+1
T+2
T+3
T+4
T+5
SRIb (01h.5)
Decode
Buffer
CRCOK (0Ch.r7)
Automatic Repeat Correction triggered by
CRC error of sector T+1 in first run
1
2
3
4
5
6
0
1
2
3
4
BBK (internal)
DDBH/L
(29h/28h)
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