SH7261 Datasheet, PDF (996/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 21 CD-ROM Decoder (ROM-DEC)
21.3.12 Mode Determination and Link Sector Detection Status Register (CROMST5)
CROMST5 indicates the result of automatic mode determination and link block detection.
Bit: 7
6
5
ST_AMD[2:0]
Initial value: 0
0
0
R/W: R R R
4
3
2
1
0
ST_ LINK_ LINK_ LINK_ LINK_
MDX ON DET SDET OUT1
0
0
0
0
0
RRRRR
Bit
7 to 5
Bit Name
ST_AMD
[2:0]
Initial
Value
000
4
ST_MDX 0
3
LINK_ON 0
2
LINK_DET 0
R/W Description
R
Result of Automatic Mode Determination
These bits indicate the result of mode determination
when the automatic mode determination function is
used.
000: Automatic mode determination function is not used
001: Mode 0
010: Mode 1
011: 
100: Mode 2 not XA
101: Mode 2 Form 1
110: Mode 2 Form 2
111: 
R
Indicates that, when the mode has been manually set
rather than automatically determined, the mode setting
disagrees with the mode as recognized by the logic. In
this case, the manually set value takes priority.
R
This bit is set to 1 when a link block was recognized in
link block determination.
For the criteria for link block determination, refer to the
LINK2 bit in the CROMCTL4 register.
When this bit is set to 1, buffering control is performed
according to the setting of the CBUF_LINK bit in the
CBUFCTL0 register.
R
Indicates that a link block (run-out 1 to run-in 4) was
detected.
Since detection is based on the data before ECC
correction, LINK_DET may also be set to 1 if data
erroneously happens to contain the same code as a link
block.
Rev. 2.00 Sep. 07, 2007 Page 964 of 1312
REJ09B0320-0200