KS9287 View Datasheet(PDF) - Samsung
Part Name
Description
Manufacturer
KS9287 Datasheet PDF : 29 Pages
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DIGITAL SIGNAL PROCESSOR
KS9287
LKFS
1
0
0
ULKFS
Comment
1 Play back frame sync and the generated sync coincide.
1) The play back frame sync and the generated frame sync do not coincide,
1
but PBFR sync is detected from within the window selected by WEL.
2) PBFR sync and XTFR sync do not coincide, and are not detected from within the window
selected by WSEL. Sync insert is carried out.
1) Immediately after the following situation: Frame sync is not detected within the window,
0
so frame is inserted in the amount set by CNTL-S registers FSEM and FSEL.
2) If PBFR sync is still undetected after 1).
ECC
When disc data is damaged, it is corrected using the ECC (Error Correcting Code) block. It uses the CIRC (Cross
Interleaved Reed-Solomon Code), correcting up to 2 errors when C1(32, 28), and up to 4 erasures when C2(28,
24). Error correction handles the data in units of 8-bit 1 symbol.
The ECC block has Pointer handling function, and can generate a C1 pointer in C1 correction, and a C2 pointer in
the C2 correction. The C1 and C2 pointers output a flag about the ECC-handled data to mark it as error data. This
Flag information signal is input into the interpolator, and used for handling the error data. Also, the Error correcting
results can be monitored using the FALF5 ~ FLAG1 pins.
Mode
C1 No error
C1 1 error Correction
C1 2 error Correction
C1 No Correction
C2 No error
C2 1 error Correction
C2 2 error Correction
C2 3 error Correction
C2 4 error Correction
C2 No Correction
C2 No Correction
Table 2. Error Correction Monitoring Flag Results
FLAG5 FLAG4 FLAG3 FLAG2 FLAG1
Remark
0
0
0
0
0
C1 Correction start
0
0
0
0
1
-
0
0
0
1
0
-
0
1
1
1
1
C1 flag set
1
0
0
0
0
C2 Correction start
1
0
0
0
1
-
1
0
0
1
0
-
1
0
0
1
1
-
1
0
1
0
0
-
1
1
1
1
0
C1 flag copy
1
1
1
1
1
C2 flag set
Note: When carrying out forward or backward fast search, MICOM must give the Attenuation, or the MUTE command
to the DSP IC. If not, an error can occur when carrying out erasure correction during fast search.
20
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