User manual SEAGATE 2R015H1 REV A

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Manual abstract: user guide SEAGATE 2R015H1REV A

Detailed instructions for use are in the User's Guide.

[. . . ] Hard Disk Drive Specifications Models: 2R015H1 & 2R010H1 P/N:1525/rev. A This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein ­ which will be incorporated in revised editions of the publication. Maxtor may make changes or improvements in the product(s) described in this publication at any time and without notice. [. . . ] This command will spin the drive down and cause the drive to enter the STANDBY MODE immediately. If the drive is already spun down, the spin down sequence is not executed. Idle Immediate ­ 95h/E1h Spin up and do not change time out value. This command will spin up the spin motor if the drive is spun down, and cause the drive to enter the IDLE MODE immediately. If the drive is already spinning, the spin up sequence is not executed. The actuator is parked and some circuits are powered off. Standby ­ 96h/E2h Spin down and change time out value. This command will spin the drive down and cause the drive to enter the STANDBY MODE immediately. If the drive is already spun down, the spin down sequence is not executed. A non-zero value placed in the sector count register will enable the Automatic Power Down sequence. The timer will begin counting down when the drive returns to the IDLE MODE. A value of zero placed in the sector count register will disable the Automatic Power Down sequence. Idle ­ 97h/E3h Spin up and change time out value. If the drive is already spinning, the spin up sequence is not executed. A non-zero value placed in the Sector Count register will enable the Automatic Power Down sequence and their timer will begin counting down immediately. A value of zero placed in the Sector Count register will disable the Automatic Power Down sequence. The actuator is parked and some circuits are powered off. TIMER VAL UE 0 1 - 240 241 - 251 252 253 254 255 TIME-OUT PERIOD Ti me-out di sabled (value * 5) seconds ((value - 240) * 30) mi nutes 21 mi nutes Vendor uni que peri od = 10 hours Reserved 21 m inutes, 15 seconds Check Power Mode ­ 98h/E5h This command returns a code in the Sector Count register that determines the current Power Mode status of the drive. If the drive is in, going to, or recovering from the STANDBY MODE the drive sets the Sector Count register to OOh. If the drive is in the IDLE MODE or ACTIVE MODE, the drive sets the Sector Count register to FFh. Set Sleep Mode ­ 99h/E6h This command will spin the drive down and cause the drive to enter the SLEEP MODE immediately. If the drive is already spun down, the spin down sequence is not executed. Note: The only way to recover from SLEEP MODE is with a software reset or a hardware reset. 7­8 INTERFACE COMMANDS Default Power-on Condition The drive's default power on condition is the ACTIVE MODE. Upon receiving a Power Mode command, except the SLEEP MODE command, the drive sets BSY and performs the requested power operation. Once the requested Power Mode change has begun, the drive resets BSY and generates an interrupt - without waiting for the drive to spin up or spin down. Upon receiving a SLEEP MODE command the drive is spun down, and when it is stopped, the drive resets BSY and generates an interrupt. When enabling the Automatic Power Down sequence, the value placed in the Sector Count register is multiplied by five seconds to obtain the Time-out Interval value. [. . . ] The digitally controlled motor moves the head positioner from track to track in small, step-like motions. storage capacity The amount of data that can be stored in a memory location, usually specified in kilobytes for main memory and floppy drives and megabytes for mass storage devices. storage density Usually refers to recording density (BPI, TPI, or a combination of the two. ) storage location A memory location, identified by an address where information may be read or written. GL ­ 7 GLOSSARY strobe offset signal A group of digital input signal levels which cause the read PLL and/or data decoder to shift the decoding windows by fractional amounts. Often early/late are modified when two signals are used. W Whitney head A successor to the original Winchester read/write head design. [. . . ]

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