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Section 23 CD-ROM Decoder
Page 1222 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
23.3.24 Pre-ECC Correction Subheader: Data Type (Byte 19) Data Register (SHEAD03)
The pre-ECC correction subheader: data type (byte 19) data register (SHEAD03) indicates the
data type value in the subheader before ECC correction (byte 19).
76543210
00000000
RRRRRRRR
Bit:
Initial value:
R/W:
SHEAD03[7:0]
Bit Bit Name
Initial
Value R/W Description
7 to 0 SHEAD03
[7:0]
All 0 R Indicate data type value in the subheader before ECC
correction (byte 19).
For sectors not in Mode 2, this register contains the
byte of data at the corresponding position.
23.3.25 Pre-ECC Correction Subheader: File Number (Byte 20) Data Register (SHEAD04)
The pre-ECC correction subheader: file number (byte 20) data register (SHEAD04) indicates the
file number value in the subheader before ECC correction (byte 20).
76543210
00000000
RRRRRRRR
Bit:
Initial value:
R/W:
SHEAD04[7:0]
Bit Bit Name
Initial
Value R/W Description
7 to 0 SHEAD04
[7:0]
All 0 R Indicate file number value in the subheader before ECC
correction (byte 20).
For sectors not in Mode 2, this register contains the
byte of data at the corresponding position.