4.3.1.9 Ata Features Register; 4.3.1.10 Atapi Features Register; 4.3.1.11 Ata Sector Count Register; 4.3.1.12 Atapi Interrupt Reason Register - Fujitsu MCE3064AP Product Manual

4.3.1.9 ATA Features register

This register is used for the SET FEATURES command.

4.3.1.10 ATAPI Features register

This register's bits are defined as shown below.
Table 4.11 Bit definitions of ATAPI Features register
7 6
!
All values in bits 7 to 2 are ignored.
!
OVERLAP is ignored.
!
When DMA is 1, the ODD performs DMA transfer for data.

4.3.1.11 ATA Sector Count register

This register is used for the SET FEATURES command.

4.3.1.12 ATAPI Interrupt Reason register

This register's bits are defined as shown below.
Table 4.12 Bit definitions of ATAPI Interrupt Reason register
7 6
Reserved Reserved
(0b) (0b)
!
A value of 1 in RELEASE indicates that the ODD released the ATA bus before completion of
the current command.
!
IO indicates the direction of data transfer. See Table 4.13.
!
CoD indicates the type of transfer. See Table 4.13.
5 4
Reserved
5 4
Reserved Reserved Reserved
(0b) (0b)
C156-E142-02EN
3 2
OVERLAP
3 2
RELEASE IO
(0b)
1 0
DMA Write
1 0
CoD Read
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