5.4 Command Protocol
5.4 Command Protocol
The host should confirm that the BSY bit of the Shadow Block Status register of the device is 0 prior to issue a command. If BSY bit is 1, the host should wait for issuing a command until BSY bit is cleared to 0.
Commands can be executed only when the DRDY bit of the Status register is 1. However, the following commands can be executed even if DRDY bit is 0.
•EXECUTE DEVICE DIAGNOSTIC
•INITIALIZE DEVICE PARAMETERS
5.4.1Non-data command protocol
Execution of the following commands does not involve data transfer between the host and the device.
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RECALIBRATE
SEEK
READ VERIFY SECTOR(S) (EXT)
EXECUTE DEVICE DIAGNOSTIC
INITIALIZE DEVICE PARAMETERS
SET FEATURES
SET MULTIPLE MODE
SET MAX ADDRESS (EXT)
READ NATIVE MAX ADDRESS (EXT)
IDLE
IDLE IMMEDIATE
STANDBY
STANDBY IMMEDIATE
CHECK POWER MODE
SMART DISABLE OPERATION
SMART ENABLE/DISABLE AUTOSAVE
SMART ENABLE OPERATION
