SH7764 Datasheet, PDF (664/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 17 ATAPI
17.3.14 ATAPI Signal Status Register (ATAPI_SIG_ST)
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Initial value: ₀
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
—
—
—
—
—
—
—
—
—
—
—
—
—
— DDMARDY DMARQ
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0 ——
R/W: R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit
31 to 2
1
0
Bit Name
—
DDMARDY
Initial
Value
R/W
All 0
R
Undefined R
DMARQ
Undefined R
Description
Reserved
DDMARDY indicates ATAPI DDMARDY
(Inverted IDEIORDY) signal status.
DMARQ indicates ATAPI DMARQ (IODREQ) signal
status.
Rev. 1.00 Nov. 22, 2007 Page 608 of 1692
REJ09B0360-0100