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Section 23 CD-ROM Decoder
Page 1250 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
23.4.5 Buffering Format
Figure 23.15 shows the format of the output data stream produced by CD-ROM decoding.
A 2-byte-wide window register STRMDOUT0 is provided for the output. When this window
register is accessed after decoding of a CD-ROM sector has finished, the bytes of data are output
in order from the sync code.
Sync code
Header
Subheader
Data
EDC
ECC
Erasure
Reserved
H'00
Block error
H'0000
H'0000
Status (See next page)
H'0000
Reserved
Storage flag
12 bytes
4 bytes
8 bytes
2048 bytes
2768 bytes
4 bytes
276 bytes
294 bytes
108 bytes
2 bytes
2 bytes
2 bytes
2 bytes
2 bytes
2 bytes
2 bytes
Figure 23.15 Output Data Stream Format