Fujitsu MHV2100BH, MHV2120BH, MHV2080BH, MHV2040BH, MHV2060BH manual Advanced Power Management APM

Models: MHV2100BH MHV2040BH MHV2120BH MHV2060BH MHV2080BH

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5.3 Host Commands

 

 

 

 

 

 

Transfer mode

 

Sector Count file

 

 

 

 

 

 

 

 

PIO default transfer mode

00000

000

(X’00’)

 

 

 

 

 

 

 

PIO flow control transfer mode X

00001 000

(X’08’: Mode 0)

 

 

 

 

 

 

 

 

 

00001

001

(X’09’: Mode 1)

 

 

 

 

 

 

 

 

 

00001

010

(X’0A’: Mode 2)

 

 

 

 

 

 

 

 

 

00001

011

(X’0B’: Mode 3)

 

 

 

 

 

 

 

 

 

00001

100

(X’0C’: Mode 4)

 

 

 

 

 

 

Single word DMA Mode X

00010 000 (X ' 10 ' : Mode 0)

 

 

 

 

 

 

 

 

00010 001

(X ' 11 ' : Mode 1)

 

 

 

 

 

 

 

 

00010 010

(X ' 12 ' : Mode 2)

 

 

 

 

 

 

 

Multiword DMA transfer mode X

00100 000

(X’20’: Mode 0)

 

 

 

 

 

 

 

 

 

00100

001

(X’21’: Mode 1)

 

 

 

 

 

 

 

 

 

00100

010

(X’22’: Mode 2)

 

 

 

 

 

 

Ultra DMA transfer mode X

01000 000 (X’40’: Mode 0)

 

 

 

 

 

 

 

 

01000 001

(X’41’: Mode 1)

 

 

 

 

 

 

 

 

01000 010

(X’42’: Mode 2)

 

 

 

 

 

 

 

 

01000 011

(X’43’: Mode 3)

 

 

 

 

 

 

 

 

01000 100

(X’44’: Mode 4)

 

 

 

 

 

 

 

 

01000 101

(X’45’: Mode 5)

 

 

 

 

 

 

 

 

*2) Advanced Power Management (APM)

The host writes the Sector Count field with the desired power management level and executes this command with the Features field X’05’, and then Advanced Power Management is enabled.

The drive automatically shifts to power saving mode up to the specified APM level when the drive does not receive any commands for a specific time. The sequence in which the power management level shifts is from Active Idle to Low Power Idle to Standby. The Mode-2 level requires the longest shifting time, depending on the APM level settings. The settings of the APM level revert to their default values (Mode-1) when power-on or COMRESET occurs for the drive.

C141-E224

5-107

Page 181
Image 181
Fujitsu MHV2100BH, MHV2120BH, MHV2080BH, MHV2040BH, MHV2060BH manual Advanced Power Management APM