User manual

Hitachi hard disk drive specifications
255
FUNCTION
INTERVAL
START
STOP
TIMEOUT
DMA Data
Transfer
Command
Device Busy after a
Register FIS to issue a
command
The hosts sets proper
values in the registers and
sends a Register FIS
The host sets BSY(=1) to
the Status Register.
400 ns
Table 181 Timeout Values --Continued--
Command category is referred to 10, "Command Protocol" on page 100.
The abbreviations "ns", "us", "ms" and "sec" mean nanoseconds, microseconds, milliseconds and seconds,
respectively.
We recommend that the host system executes Soft reset and then retries to issue the command if the host
system timeout would occur for the device.