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DISK DRIVE OPERATION
SpinPoint V40 Product Manual
86
6.6.3 Non-Data Commands
This class includes:
• Check Power Mode (98h,E5h)
• Flush Cache (E7h)
• Execute Drive Diagnostic (DRDY=x) (90h)
• Idle (97h,E3h)
• Idle Immediate (95h,E1h)
• Initialize Drive Parameters (DRDY=x) (91h)
• NOP (00h)
• Read Native Max Address (F8h)
• Read Verify Sector(s) (40h)
• Recalibrate (1Xh)
• Seek (7Xh)
• Set Features (EFh)
• Set Max Address (F9h)
• Set Multiple Mode (C6h)
• Sleep (99h,E6h)
• SMART Disable Operation
• SMART Enable/Disable Autosave
• SMART Enable Operation
• SMART Execute Off-line Immediate
• SMART Return Status
• Standby (96h,E2h)
• Standby Immediate (94h,E0h)
Execution of these commands involves no data transfer.
a) The host writes any required parameters to the Features, Sector Count, Sector Number, Cylinder and
Drive/Head registers.
b) The host writes the command code to the Command register.
c) The drive sets BSY.
d) When the drive has completed processing, it clears BSY and asserts INTRQ.
e) The host reads the Status register.
f) The drive negates INTRQ.