SH7263 Datasheet, PDF (1139/1862 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 21 CD-ROM Decoder (ROM-DEC)
21.3.14 Buffer Status Register (CBUFST0)
The buffer status register (CBUFST0) indicates that the system is searching for the first sector to
be buffered, or that buffering is in progress.
Bit: 7
6
5
4
3
2
1
0
BUF_ BUF_
REF ACT
-
-
-
-
-
-
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
Bit Bit Name
7
BUF_REF
6
BUF_ACT
5 to 0 ⎯
Initial
Value
0
0
All 0
R/W Description
R
Indicates that the search for the first sector to be buffered
is in progress.
This bit is only valid when the automatic buffering
function is used (CBUF_AUT = 1).
R
Indicates that buffering is in progress.
R
Reserved
These bits are always read as 0 and cannot be modified.
Rev. 2.00 Mar. 14, 2008 Page 1105 of 1824
REJ09B0290-0200