Seagate ST3802110SCE Conducted noise, Voltage tolerance, Power-management modes, Active mode

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2.8.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.

•Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected noise at up to 10 MHz.

•Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.8.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ± 10%

2.8.4Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes:

Power modes

Heads

Spindle

Buffer

 

 

 

 

Active

Tracking

Rotating

Enabled

 

 

 

 

Idle

Tracking

Rotating

Enabled

 

 

 

 

Standby

Parked

Stopped

Enabled

 

 

 

 

Sleep

Parked

Stopped

Disabled

 

 

 

 

•Active mode

The drive is in Active mode during the read/write and seek operations.

• Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is enabled, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disc access is necessary.

• Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.

• Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any

DB35.2 Serial ATA Product Manual, Rev. C

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Contents DB35.2 Serial ATA Page Contents DB35.2 Serial ATA Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Specification summaries Drive specificationsDrive specification ST3500841SCE ST3400833SCE Drive specifications for 500 and 400 Gbyte modelsBe asked to provide the drive serial number, model number or Drive specification ST3300822SCE ST3250824SCE ST3200827SCE Drive specifications for 300, 250 and 200 Gbyte modelsDrive specifications for 300, 250 and 200 Gbyte models Drive specification ST3160212SCE ST3120213SCE ST3802110SCE Drive specifications for 160, 120, and 80 Gbyte modelsDrive specifications for 160, 120, and 80 Gbyte models LBA mode Default logical geometryFormatted capacity Recording and interface technologyDB35.2 Serial ATA Product Manual, Rev. C Drive specification Physical characteristicsSeek time Typical seek times msec Read WriteStart/stop times Power specificationsTypical current profiles DC power requirementsActive mode Power-management modesIdle mode Sleep modeEnvironmental specifications Nonoperating shock AcousticsVibration Operating vibrationReliability Electromagnetic immunityRadio frequency environments Performance Reference Test Description Level StandardAgency certification Safety certificationElectromagnetic compatibility Korean RRLAustralian C-Tick N176 Environmental protectionFCC verification European Union Restriction of Hazardous Substances RoHSCorrosive environment DB35.2 Serial ATA Product Manual, Rev. C Handling and static-discharge precautions Configuring and mounting the driveBreather filter hole location Breather filter hole precautionsSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewHot-Plug compatibility Serial ATA Sata interfaceSerial ATA connector pin definitions Serial ATA device plug connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordSet Features command values Set Features command3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command DB35.2 Serial ATA Product Manual, Rev. C Internet Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index Pcba Sata Page Page Seagate Technology LLC
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