IBM DTTA-351010 Hard Drive Specifications - Page 180

OUT to Command

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FUNCTION Non Data Command DMA Data Transfer Command INTERVAL Device Busy After Command Code Out Interrupt For Command Complete Device Busy after Command Code Out START OUT to Command Register Status Register BSY=1 Out to Command Register STOP Status Register BSY=1 Interrupt Status Register BSY=1 TIMEOUT 400 ns 30 sec 400 ns Figure 129. Timeout Values --- Continued --- Command category is referred to 11.0, "Command Protocol" on page 89. 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 retry to issue the command if the host system would occur timeout for the device. 172 OEM Specifications for DTTA-3xxxxx

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FUNCTION
INTERVAL
START
STOP
TIMEOUT
Non Data
Device Busy After
OUT to Command
Status Register
400 ns
Command
Command Code Out
Register
BSY=1
Interrupt For
Status Register
Interrupt
30 sec
Command Complete
BSY=1
DMA Data
Device Busy after
Out to Command
Status Register
400 ns
Transfer
Command Code Out
Register
BSY=1
Command
Figure 129. Timeout Values --- Continued ---
Command category is referred to 11.0, “Command Protocol” on page 89.
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 retry to issue the command if the host
system would occur timeout for the device.
172
OEM Specifications for DTTA-3xxxxx