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Section 23 CD-ROM Decoder
R01UH0134EJ0400 Rev. 4.00 Page 1231 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
Value R/W Description
6 CBUF_EN 0 R/W Buffering to Buffer RAM Enable
This bit turns on/off buffering in both automatic and
manual buffering modes. In manual buffering mode, set
this bit after generation of the ISEC interrupt. This bit is
automatically reset when automatic buffering stops.
0: Buffering is OFF
1: Buffering is ON
5 0 R/W Reserved
This bit is always read as 0.The write value should
always be 0.
4, 3 CBUF_MD
[1:0]
00 R/W Start-sector detection mode when the automatic
buffering function is in use
00: The header values for the previous and current
sectors must be in sequence.
01: The header value detected in the current sector
must be in sequence with the interpolated value.
10: A current sector with any header value is OK.
11: Start-sector detection is based on the interpolated
value even if the current sector is not detected.
2 CBUF_TS 1 R/W CBUFCTL1 to CBUFCTL3 Setting Mode
0: CBUFCTL1 to CBUFCTL3: BCD (in decimal)
1: Total number of sectors (in hexadecimal)
1 CBUF_Q 0 R/W Q-channel code buffering data specification in the case
of a CRC error in the Q-channel code
0: The values for the last sector for which the CRC
returned a correct result are buffered.
1: The erroneous data is buffered as is.
Note: Since subcodes are not input with this LSI,
always set this bit to 1.
0 0 R/W Reserved
This bit is always read as 0.The write value should
always be 0.