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Section 23 CD-ROM Decoder
R01UH0134EJ0400 Rev. 4.00 Page 1223 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
23.3.26 Pre-ECC Correction Subheader: Channel Number (Byte 21) Data Register
(SHEAD05)
The pre-ECC correction subheader: channel number (byte 21) data register (SHEAD05) indicates
the channel number value in the subheader before ECC correction (byte 21).
76543210
00000000
RRRRRRRR
Bit:
Initial value:
R/W:
SHEAD05[7:0]
Bit Bit Name
Initial
Value R/W Description
7 to 0 SHEAD05
[7:0]
All 0 R Indicate channel number value in the subheader before
ECC correction (byte 21).
For sectors not in Mode 2, this register contains the
byte of data at the corresponding position.
23.3.27 Pre-ECC Correction Subheader: Sub-Mode (Byte 22) Data Register (SHEAD06)
The pre-ECC correction subheader: sub-mode (byte 22) data register (SHEAD06) indicates the
sub-mode value in the subheader before ECC correction (byte 22).
76543210
00000000
RRRRRRRR
Bit:
Initial value:
R/W:
SHEAD06[7:0]
Bit Bit Name
Initial
Value R/W Description
7 to 0 SHEAD06
[7:0]
All 0 R Sub-Mode Value in Subheader Before ECC Correction
(Byte 22)
For sectors not in Mode 2, this register contains the
byte of data at the corresponding position.