Seagate ST160LT007 Momentus Thin (.2-4K) SATA Product Manual - Page 38

32

Momentus Thin Product Manual, Gen-2 Rev. D

6.3.2

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 inter-

rupt. 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:

Note.

At power-on, or after a hardware or software reset, the default values of the features are as indi-

cated above.

Table 8:

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

55

H

Disable read look-ahead (read cache) feature.

82

H

Disable write cache

AA

H

Enable read look-ahead (read cache) feature

(default).

C1

H

Disable the Free Fall Protection feature (41

H

above enables the Free Fall Protection feature)

F1

H

Report full capacity available

Section	Page
1.0 Seagate Technology support services	7
2.0 Introduction	8
2.1 About the Serial ATA interface	9
3.0 Drive specifications	10
3.1 Specification summary table	10
3.2 Formatted capacity	12
3.2.1 LBA mode	12
3.3 Default logical geometry	12
3.4 Physical organization	12
3.5 Recording and interface technology	13
3.6 Physical characteristics	13
3.7 Seek time	13
3.8 Start/stop times	14
3.9 Power specifications	14
3.9.1 Power consumption	14
3.9.1.1 Typical current profile	16
3.9.2 Deferred spinup	16
3.9.3 Conducted noise	16
3.9.4 Voltage tolerance	16
3.9.5 Power-management modes	17
3.10 Environmental specifications	18
3.10.1 Ambient temperature	18
3.10.2 Temperature gradient	18
3.10.3 Humidity	18
3.10.3.1 Relative humidity	18
3.10.3.2 Wet bulb temperature	18
3.10.4 Altitude	18
3.10.5 Shock	19
3.10.5.1 Operating shock	19
3.10.5.2 Nonoperating shock	19
3.10.6 Vibration	19
3.10.6.1 Operating vibration	19
3.10.6.2 Nonoperating vibration	19
3.11 Acoustics	20
3.12 Electromagnetic immunity	20
3.13 Reliability	21
3.14 Agency certification	21
3.14.1 Safety certification	21
3.14.2 Electromagnetic compatibility	21
3.14.3 FCC verification	22
3.15 Environmental protection	23
3.15.1 European Union Restriction of Hazardous Substances (RoHS)	23
3.15.2 China Restriction of Hazardous Substances (RoHS) Directive	23
3.16 Corrosive environment	23
4.0 Configuring and mounting the drive	24
4.1 Handling and static-discharge precautions	24
4.2 Configuring the drive	24
4.3 Serial ATA cables and connectors	25
4.4 Drive mounting	25
5.0 About FIPS	28
6.0 Serial ATA (SATA) interface	30
6.1 Hot-Plug compatibility	30
6.2 Serial ATA device plug connector pin definitions	30
6.3 Supported ATA commands	32
6.3.1 Identify Device command	34
6.3.2 Set Features command	38
6.3.3 S.M.A.R.T. commands	39
Index	41
A	41
B	41
C	41
D	41
E	41
F	41
G	41
H	42
I	42
K	42
L	42
M	42
N	42
O	42
P	42
Q	42
R	42
S	43
T	43
U	43
V	43

Seagate ST160LT007 Momentus Thin (.2-4K) SATA Product Manual - Page 38

Set Features command, Table 8, Set Features command values

Page 38 highlights