IBM DBCA-204860 Hard Drive Specifications - Page 74

set by Initialize Device Parameter

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POR hard soft reset reset Aborting Host interface o o Aborting Device operation (*1) (*1) Initialization of hardware o o x Internal diagnostic o o x Spinning spindle (*6) x x Initialization of registers (*2) o o o DASP handshake o o x PDIAG handshake o o o Reverting programmed parameters to default o o (*3) Number of CHS (set by Initialize Device Parameter) Multiple mode Write cache Read look ahead ECC bytes Volatile max address Address offset mode Disable Standby timer o o x Power mode (*6) (*4) (*4) Reset Standby timer value (*5) o o x o execute x not execute Figure 45. Reset Response Table Note. (*1) (*2) (*3) (*4) (*5) (*6) Execute after the data in write cache has been written. Default value on P O R is shown in Figure 46 on page 67. The Set Features command with Feature register = CCh enables the device to revert these parameters to the power on defaults. In the case of sleep mode, the device goes to idle mode. In other case, the device does not change current mode. After reset the Standby timer value, it is set to 109 minutes. According to the initial power mode selection. 66 OEM Specifications of DBCA-2xxxxx 2.5 inch H D D

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POR
hard
soft
reset reset
Aborting Host interface
o
o
Aborting Device operation
(*1)
(*1)
Initialization of hardware
o
o
x
Internal diagnostic
o
o
x
Spinning spindle
(*6)
x
x
Initialization of registers
(*2)
o
o
o
DASP handshake
o
o
x
PDIAG handshake
o
o
o
Reverting programmed parameters to default
o
o
(*3)
Number of CHS
(set by Initialize Device Parameter)
Multiple mode
Write cache
Read look ahead
ECC bytes
Volatile max address
Address offset mode
Disable Standby timer
o
o
x
Power mode
(*6)
(*4)
(*4)
Reset Standby timer value
(*5)
o
o
x
o
execute
x
not execute
Figure 45. Reset Response Table
Note.
(*1)
Execute after the data in write cache has been written.
(*2)
Default value on POR is shown in Figure 46 on page 67.
(*3)
The Set Features command with Feature register =
CCh enables the device to revert these
parameters to the power on defaults.
(*4)
In the case of sleep mode, the device goes to idle mode.
In other case, the device does not
change current mode.
(*5)
After reset the Standby timer value, it is set to 109 minutes.
(*6)
According to the initial power mode selection.
66
OEM Specifications of DBCA-2xxxxx 2.5 inch HDD