IBM DBCA-204860 Hard Drive Specifications - Page 182

FUNCTION, INTERVAL, START, TIMEOUT, DMA Data, Device Busy after, Out to Command, Status Register,

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FUNCTION DMA Data Transfer Command INTERVAL Device Busy after Command Code Out START Out to Command Register STOP Status Register BSY=1 TIMEOUT 400 ns Figure 114. Timeout Values 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 timeout would occur for the device. (Note.1) (Note.2) (Note.3) For SECURITY ERASE UNIT command, the execution time is referred to 12.21, "Security Erase Unit (F4h)" on page 133. For F O R M A T UNIT command, the execution time is referred to 12.5, "Format Unit (F7h: Vendor Specific)" on page 104. When the initial power mode at power on is Standby mode, and when the following commands are issued by the host as First Command, the command's timeout value of the field is 10 seconds. Security Disable Password, Security Erase Unit, Security Set Password, Security Unlock. 174 OEM Specifications of DBCA-2xxxxx 2.5 inch H D D

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FUNCTION
INTERVAL
START
STOP
TIMEOUT
DMA Data
Device Busy after
Out to Command
Status Register
400 ns
Transfer
Command Code Out
Register
BSY=1
Command
Figure 114. Timeout Values
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 timeout would occur for the device.
(Note.1)
For SECURITY ERASE UNIT command, the execution time is referred to 12.21, “Security
Erase Unit
(F4h)” on page 133.
(Note.2)
For FORMAT UNIT command, the execution time is referred to 12.5, “Format Unit
(F7h:
Vendor Specific)” on page 104.
(Note.3)
When the initial power mode at power on is Standby mode, and when the following commands
are issued by the host as First Command, the command's timeout value of the field is 10
seconds.
Security Disable Password, Security Erase Unit,
Security Set Password, Security Unlock.
174
OEM Specifications of DBCA-2xxxxx 2.5 inch HDD