5-7
DWR/
DSK_WR/ Value
6
When this active low bit is cleared, the drive is ready to
write data to the SYM53C040.
RD/
DSK_RD/ Value
5
When this active low bit is cleared, the drive is ready to
read data from the SYM53C040.
ACK/
ENCL_ACK/ Value
4
This active low bit is cleared as an acknowledge signal
driven by the SYM53C040 in discovery, read, and write
operations.
D[3:0]
8067 Interface Data Nibble Bits
[3:0]
These bits contain the current data nibble for the D[3:0]
signals in read/write operations.
Содержание Symbios SYM53C040
Страница 12: ...xii Preface...
Страница 90: ...4 18 SCSI and DMA Registers...
Страница 98: ...5 8 SFF 8067 Registers...
Страница 110: ...6 12 Two Wire Serial Registers...
Страница 126: ...7 16 Miscellaneous Registers...
Страница 160: ...8 34 System Registers...
Страница 184: ...9 24 Electrical Characteristics...
Страница 194: ...A 10 Register Summary...
Страница 214: ......