Seagate Pipeline HD Pipeline HD Series SATA Product Manual - Page 37

Pipeline HD SATA Product Manual, Rev. D

37

www.seagate.com

Serial ATA Interface

4.3.2

Set 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:

9

Ultra DMA mode 1 is currently active.

10


11


12


13


14


Table 10 Set Features command values

02

H

Enable write cache

(default).

03

H

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

Sector Count register values:

00

H

Set PIO mode to default (PIO mode 2).

01

H

Set PIO mode to default and disable IORDY (PIO mode 2).

08

H

PIO mode 0

09

H

PIO mode 1

0A

H

PIO mode 2

0B

H

PIO mode 3

0C

H

PIO mode 4

(default)

20

H

Multiword DMA mode 0

21

H


22

H


40

H

Ultra DMA mode 0

41

H

Ultra DMA mode 1

42

H

Ultra DMA mode 2

43

H

Ultra DMA mode 3

44

H

Ultra DMA mode 4

45

H

Ultra DMA mode 5

46

H

Ultra DMA mode 6

06

H

Enable the PUIS feature set,

07

H

07H PUIS feature set device spin-up

10

H

Enable use of SATA features

Table 9

Bit Descriptions (Continued)

Section	Page
Pipeline HD®	1
1.0 Introduction	9
1.1 About the Serial ATA Interface	9
2.0 Drive Specifications	11
2.1 Specification summary tables	11
2.2 Formatted capacity	13
2.2.1 LBA mode	13
2.3 Default logical geometry	13
2.4 Recording and interface technology	13
2.5 Physical characteristics	14
2.6 Seek time	14
2.7 Start/stop times	14
2.8 Power specifications	14
2.8.1 Power consumption	15
2.8.2 Conducted noise	17
2.8.3 Voltage tolerance	17
2.8.4 Power-management modes	17
2.9 Environmental specifications	18
2.9.1 Drive case temperature	18
2.9.2 Temperature gradient	18
2.9.3 Humidity	18
2.9.4 Altitude	18
2.9.5 Shock	18
2.9.6 Vibration	19
2.10 Acoustics	20
2.10.1 Test for Prominent Discrete Tones (PDTs)	20
2.11 Electromagnetic immunity	20
2.12 Reliability - Annualized Failure Rate	21
2.13 Warranty	21
2.14 Agency certification	21
2.14.1 Safety certification	21
2.14.2 Electromagnetic compatibility	21
2.14.3 FCC verification	22
2.15 Environmental protection	22
2.15.1 European Union Restriction of Hazardous Substances (RoHS) Directive	22
2.15.2 China Restriction of Hazardous Substances (RoHS) Directive	22
2.16 Corrosive environment	23
3.0 Configuring and Mounting the Drive	25
3.1 Handling and static-discharge precautions	25
3.2 Configuring the drive	25
3.3 Serial ATA cables and connectors	25
3.4 Drive mounting	26
4.0 Serial ATA Interface	29
4.1 Hot-Plug compatibility	29
4.2 Serial ATA device plug connector pin definitions	29
4.3 Supported ATA commands	30
4.3.1 Identify Device command	33
4.3.2 Set Features command	37
4.3.3 S.M.A.R.T. commands	38
A	39
B	39
C	39
D	39
E	39
F	39
G	39
H	39
I	39
K	39
L	40
M	40
N	40
O	40
P	40
R	40
S	40
T	41
U	41
V	41

Seagate Pipeline HD Pipeline HD Series SATA Product Manual - Page 37

Set Features command, Ultra DMA mode 0

Page 37 highlights