CXD1199AQ
2-2. Read registers
In the descriptions of the ECCSTS, DECSTS, HDRFLG, HDR, SHDR and CMADR registers, the current
sector denotes the sector with which these registers are valid for the decoder interrupt (DECINT). In the
monitor-only or write-only mode, the sector sent from the CD DSP immediately before the decoder interrupt
is called the current sector. In the real-time correction mode and repeat correction mode, the current sector
is that in which error detection correction has been completed.
2-2-1. ECCSTS (ECC status) register
bit 7 : EDCALL0 (EDC ALL 0)
This is high when there are no error flags in all the 4 EDC parity bytes of the current sector and
their values are all 00HEX.
bit 6 : ERINBLK (erasure in block)
(1) When the decoder is operating in the monitor-only, write-only or real-time mode which prohibits
erasure correction, this indicates that at least a 1-byte error flag (C2PO) has been raised in the
data excluding the sync mark from the current sector CD DSP.
(2) When the decoder is operating in the real-time correction mode which performs erasure
correction, this indicates that at least a 1-byte error flag (MDBP) has been raised in the data
excluding the sync mark from the current sector CD DSP.
bit 5 : CORINH (correction inhibit)
This is high if the current sector MODE and FORM could not be determined when the AUTODIST
bit of the DECCTL register is set high. ECC or EDC is not executed in this sector. The CORINH
bit is invalid when AUTODIST is set low. It is high in any of the conditions below when the
AUTODIST bit is set high.
(1) When the C2 pointer of the MODE byte is high
(2) When the MODE byte is a value other than 01HEX or 02HEX
(3) When the MODE byte is 02HEX and the C2 pointer is high in the submode byte
bit 4 : CORDONE (correction done)
Indicates that there is an error corrected byte in the current sector.
bit 3 : EDCOK
Indicates that an EDC check has found no errors in the current sector.
bit 2 : ECCOK
Indicates that there are no more errors from the header byte to P parity byte in the current sector.
(Bit 2 = don’t care in the MODE2, FORM2 sectors)
EDCOK
“L”
ECCOK
“L”
Description
Error(s) present in current sector
(1), (2) or (3) applies:
(1) EDC overlocked
“L”
“H”
(2) Error corrected
(3) Error(s) present in header byte with FORM2
(1) EDC overlocked
“H”
“H”
“L”
or
(3) Error(s) present in P parity byte
No error(s) in current sector
“H”
—29—
SONY [ SONY CORPORATION ]
