HP 6553 (US) Set Features command, Set transfer mode based on value in Sector Count register

Page 36

U8 Family Product Manual, Rev. B

29

4 Ultra DMA mode 4 is supported.

8Ultra DMA mode 0 is currently active.

9Ultra DMA mode 1 is currently active.

10Ultra DMA mode 2 is currently active.

11Ultra DMA mode 3 is currently active.

12Ultra DMA mode 4 is currently active.

Bit Word 93

131=80-conductor cable detected, CBLID above VIH 0=40-conductor cable detected, CBLID below VIL

3.1.3Set Features command

This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an interrupt. If the value in the register does not represent a feature that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the Features register are defined as follows:

02H

Enable write cache (default).

03H

Set transfer mode (based on value in Sector Count register).

 

Sector Count register values:

 

00H

Set PIO mode to default (PIO mode 2).

 

01H

Set PIO mode to default and disable IORDY

 

 

(PIO mode 2).

 

08H

PIO mode 0

 

09H

PIO mode 1

 

0AH

PIO mode 2

 

0BH

PIO mode 3

 

0CH

PIO mode 4 (default)

 

20H

Multiword DMA mode 0

 

21H

Multiword DMA mode 1

 

22H

Multiword DMA mode 2

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Contents
U8 Family ST317221A, ST313021AST38410A, ST34313A Ultra ATA Interface DrivesU8 Family ST317221A, ST313021AST38410A, ST34313A Ultra ATA Interface DrivesPage Contents U8 Family Product Manual, Rev. BConfiguring and mounting the drive ATA interfaceFigures U8 Family Product Manual, Rev. B Introduction Specification summary table Drive SpecificationST317221A ST313021AST317221A 0 to 60C op., -40 to 70C nonopDrive Specification 1.0 Drive specifications 1.1.1 Default logical geometry1.1 Formatted capacity 1.2 Physical organization1.4 Physical characteristics Drive Specification1.3 Recording and interface technology 1.5 Seek time1.7 Power specifications 1.7.1 Power consumptionSpinup power 1.6 Start/stop timesRead/Write power and current Operating power and currentIdle mode power Seek ModePower Mode 1.7.1.1 Typical current profileTypical Watts Typical Amps RMS1.7.4 Power-management modes Power Modes1.7.2 Conducted noise 1.7.3 Voltage toleranceIdle and Standby timers 1.8 Environmental tolerances 1.8.1 Ambient temperature1.8.2 Temperature gradient Sleep mode1.8.3 Humidity 1.8.6.1 Operating vibration 1.8.6.2 Nonoperating vibration1.9 Drive acoustics 1.12 Agency certification 1.12.1 Safety certification 1.10 Electromagnetic susceptibility1.11 Reliability 1.12.2 Electromagnetic compatibility1.12.3 FCC verification Australian CE-Tick N176U8 Family Product Manual, Rev. B 2.0 Configuring and mounting the drive 2.1 Handling and static-discharge precautions2.2 Jumper settings 2.2.1 Master/slave configuration 7 5 3 8 6 4Options jumper block J8 Master or single drive Drive is slave Cable select2.2.2 Cable-select option 2.2.3 Ultra ATA/66 cable2.3 Drive mounting Figure 3. Mounting dimensions-top, side and end view Note Dimensions are shown in inches mm3.0 ATA interface 3.1 ATA interface signals and connector pinsFigure 4. I/O pins and supported ATA signals Signal nameHost pin # and signal description Drive pin #3.1.1 Supported ATA commands Command nameCommand code in hex ATA-standard commands3.1.2 Identify Drive command Command code in hexWord Descriptionx.xx ValuexxxxH xx07Hxx1FH xxA5H Description if bit is set to Bit WordBit Word 3.1.3 Set Features command Set transfer mode based on value in Sector Count register3.1.4 S.M.A.R.T. commands Code in FeaturesS.M.A.R.T. Command RegisterCode in Features Page Page Seagate Technology, Inc 920 Disc Drive, Scotts Valley, California 95066, USAPublication Number SG35226-001, Rev. B, Printed in USA
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