User manual SEAGATE 2R010H1 REV A

[. . . ] 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 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. This command will spin-up the spin motor if the drive is spun-down. 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. If no drive commands are received from the host within the Time-out Interval, the drive automatically enters the STANDBY mode. [. . . ] Whitney technology A method of constructing a read/write head in a rigid disk drive using a Whitney head. In all other details it is the same as Winchester technology. Winchester head The read/write head used in Winchester technology, non-removable media disk drives. May be either a monolithic or composite type. [. . . ]