
Host Interface
4.5.2 PACKET (A0h)
|
|
| Table 4.20 PACKET command |
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Bit |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| 7 | 6 |
| 5 | 4 |
| 3 |
| 2 | 1 | 0 |
|
|
|
|
|
|
|
|
|
|
|
|
CM | 1 | 0 | 1 | 0 | 0 |
| 0 | 0 | 0 | ||
|
|
|
|
|
|
|
|
|
|
| |
DH | X | X |
| X | DRV |
| X | X | X | X | |
|
|
|
|
|
|
|
|
|
|
| |
CH | X | X |
| X | X |
| X | X | X | X | |
|
|
|
|
|
|
|
|
|
|
| |
CL | X | X |
| X | X |
| X | X | X | X | |
|
|
|
|
|
|
|
|
|
|
| |
SN | X | X |
| X | X |
| X | X | X | X | |
|
|
|
|
|
|
|
|
|
|
| |
SC | X | X |
| X | X |
| X | X | X | X | |
|
|
|
|
|
|
|
|
|
|
| |
FR | X | X |
| X | X |
| X | X | X | X | |
|
|
|
|
|
|
|
|
|
|
|
|
The PACKET command issues the ATAPI packet command. The OVL bit is ignored.
When the DMA bit is 1, data is transferred in the DMA mode specified in the Set Features command.