Host Interface

4.5.4 CHECK POWER MODE (E5h)

 

 

Table 4.22 CHECK POWER MODE command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

6

5

4

 

3

2

1

0

 

 

 

 

 

 

 

 

 

 

CM

1

1

1

0

0

1

0

1

 

 

 

 

 

 

 

 

 

 

DH

X

X

X

DRV

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

CH

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

CL

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

SN

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

SC

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

FR

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

The CHECK POWER MODE command sets the ODD power mode status in the SC register, then notifies the host of the value in Table 4.23. When the drive is in sleep mode, the interface is inactive and the ODD cannot receive this command.

Table 4.23 Power mode indication

Power mode status

SC register

 

 

Standby mode

00h

 

 

Entering standby mode

00h

 

 

Returning from standby mode

00h

 

 

Idle mode

FFh

 

 

Active mode

FFh

 

 

4-32

C156-E227-01EN

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Image 102
Fujitsu MCM3064AP, MCM3130AP manual Check Power Mode E5h, Power mode indication