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4.5 ATA Commands
C156-E205-01EN 4-33
4.5.7 IDLE IMMEDIATE (E1h)
Table 4.28 IDLE IMMEDIATE command
Bit
76543210
CM11100001
DHXXXDEVXXXX
CHXXXXXXXX
CLXXXXXXXX
SNXXXXXXXX
SCXXXXXXXX
FRXXXXXXXX
The ODD sets the power mode to idle mode.
4.5.8 NOP (00h)
Table 4.29 NOP command
Bit
76543210
CM00000000
DHXXXDEVXXXX
CHXXXXXXXX
CLXXXXXXXX
SNXXXXXXXX
SCXXXXXXXX
FRXXXXXXXX
The NOP command enables 16-bit access for Status register checking. The ODD
judges an unsupported command. The command ends with Aborted Command.