Renesas R5S72641 Manuel D’Utilisation
Section 23 CD-ROM Decoder
Page 1212 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
23.3.11
Header/Subheader Validity Check Status Register (CROMST4)
The header/subheader validity check status register (CROMST4) indicates errors relating to the
automatic mode determination or form determination for Mode 2.
automatic mode determination or form determination for Mode 2.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
Bit:
Initial value:
R/W:
NG_MD
NG_
MDCMP1
NG_
MDCMP2
NG_
MDCMP3
NG_
MDCMP4
NG_
MDDEF
NG_
MDTIM1
NG_
MDTIM2
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
7
NG_MD
0
R
Indicates that the sector mode could not be determined
according to the automatic mode determination criteria.
6 NG_
MDCMP1
0
R
Indicates a mismatch between the file number bytes
(bytes 16 and 20) during the form determination for
Mode 2.
(bytes 16 and 20) during the form determination for
Mode 2.
5 NG_
MDCMP2
0
R
Indicates a mismatch between the channel number
bytes (bytes 17 and 21) during the form determination
for Mode 2.
bytes (bytes 17 and 21) during the form determination
for Mode 2.
4 NG_
MDCMP3
0
R
Indicates a mismatch between the sub-mode bytes
(bytes 18 and 22) during the form determination for
Mode 2.
(bytes 18 and 22) during the form determination for
Mode 2.
3 NG_
MDCMP4
0
R
Indicates a mismatch between the data-type bytes
(bytes 19 and 23) during the form determination for
Mode 2.
(bytes 19 and 23) during the form determination for
Mode 2.
2 NG_
MDDEF
0
R
Indicates that the mode and form differ from those of
the previous sector.
the previous sector.
1 NG_
MDTIM1
0
R
Indicates that the minutes, seconds, or frames (1/75
second) value is out of sequence.
second) value is out of sequence.
In the continuity check for the next and subsequent
sectors, the updated values will be used.
sectors, the updated values will be used.
0 NG_
MDTIM2
0
R
Indicates that the minutes, seconds, or frames (1/75
second) value was not a BCD value.
second) value was not a BCD value.
Specifically, this bit means that any half-byte was
beyond the range for BCD (i.e. was A to F), HEAD01
was greater than H’59, or HEAD02 was greater than
H'74.
beyond the range for BCD (i.e. was A to F), HEAD01
was greater than H’59, or HEAD02 was greater than
H'74.
In the continuity check for the next and subsequent
sectors, interpolated values will be used.
sectors, interpolated values will be used.