Word

Content

 

Description

 

 

2

1=Security locked

 

 

1

1=Security enabled

 

 

0

1=Security supported

129-159

0000h

Vendor specific

160

0000h

CFA power mode 1

161-175

0000h

Reserved for CFA

176-205

0000h

Current media serial number

206-254

0000h

Reserved

 

255

xxxxh

Integrity word

 

 

15-8

Checksum

 

 

5

Signature (A5h)

8.2.8Idle (E3h)

This command causes the drive to enter the Idle Mode, clear BSY, and generate an interrupt. The interrupt is generated even though the drive may not have fully transitioned to Idle Mode.

If the drive is already spinning, the spin-up sequence is not executed.

If the Sector Count register is non-zero, then the automatic Idle Mode sequence is enabled, and the timer begins counting down immediately. If the Sector Count register is zero, the automatic power down sequence is disabled.

After the drive enters Idle Mode, it automatically transitions to Standby Mode upon expiration of a prescribed 1 minute spin-down timer.

Table 8-6 Automatic Standby Timer Periods

Sector Count Register Contents

Corresponding Time-Out Period

0

(00h)

Timeout Disabled

 

 

1-240 (01h-FOh)

(value * 5) seconds

 

 

241-251 (F1h-FBh)

(value - 240) * 30 minutes

 

 

 

252

(FCh)

21 minutes

 

 

 

253

(FDh)

8 hours

 

 

 

254

(FEh)

Reserved

 

 

 

255

(FFh)

21 minutes 15 seconds

 

 

 

8.2.9Idle Immediate (E1h)

This command causes the drive to enter Idle Mode, clear BSY, and generate an interrupt. The interrupt is generated even though the drive may not have fully transitioned to Idle Mode.

Spinpoint M9T Product Manual REV 1.0

54

Page 59
Image 59
Samsung M9T manual Idle E3h, Idle Immediate E1h, Automatic Standby Timer Periods