Seagate ST9100A Manuál

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .ST9100A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 Functional specificationsInterface ATRecording method RLL (1,7)Recording density (BPI) 58,200Flux density (FCI) 43,760Track density (TPI) 2,650Spi

Averagetypical avg. (msec)maximum avg. (msec)1619Full-stroketypical avg. (msec)maximum avg. (msec)2628Average latency (msec) 8.461.8 Spinup times (typ

1.10.4 Relative humidityOperating 8% to 80% noncondensing;Max. wet bulb temperature: 40°C (78.8°F)Nonoperating 8% to 90% noncondensingMax. wet bulb te

1.10.7.1 Operating vibrationMaximum vibration without drive damage or degradation in performance:5–22 Hz 0.020-inch displacement (double amplitude)22–

data safety. The buffer remains enabled, and the drive accepts allcommands and returns to Active mode any time disc access is necessary.Stan

1.11.2 Power consumptionPower requirements for the ST9100A are listed below. All typical meas-urements are taken at 5V and zero ripple on a 10 MHz AT

1.12 UL/CSA listingThe ST9100A is listed in accordance with UL 1950 and CSA C22.2(950-M89), and meets all applicable sections of IEC 380, IE

accordance with the manufacturer’s instructions, may cause interferenceto radio and television reception.This equipment is designed to provide reasona

2.0 Drive handling and mounting2.1 Handling and static-discharge precautions After unpacking, and prior to system integration, the drive may

4X 3 mm × 0.5 mm,0.15 in (3.81mm)min. full thread0.0002.430 ± 0.010(61.72 ± 0.25)0.0001.227 ± 0.025(31.17 ± 0.61)3.986 ± 0.015(101.24 ± 0.38)1.500 ± 0

3.0 AT interfaceThe ST9100A uses the industry-standard ATA task file interface. Thedrives support both 8-bit and 16-bit data transfer and have no

Master/slaveconfiguration jumpersPin 1Pin 20 removedfor keyingCircuit boardB DA CDrive is master; no slave drive presentDrive is maste

3.2 Onboard drive diagnosticsAt power-on, the drive executes a series of diagnostic tests. A series ofLED flashes on the system panel indicate a failu

jumpers (if the application requires the use of such jumpers). See Figure4 for details.3.5 AT interface cableMaximum cable length is 18 inches (457 mm

3.6 AT interface connector pin assignmentsThe following diagram summarizes the signal pin assignments for theST9100A AT interface connector.Reset–Grou

3.7 AT interface commands for the ST9100AThe following commands are specific to the ST9100A. For a descriptionof any AT interface commands not found i

94HBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Command(1F7H)1 0 0 1 0 1 0 0Cyl. High(1F5H)XCyl. Low(1F4H)XDrv. Head(1F6H)1 0 1 D/S XSec. Num.(1F3H)

95HBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Command(1F7H)1 0 0 1 0 1 0 1Cyl. High(1F5H)XCyl. Low(1F4H)XDrv. Head(1F6H)1 0 1 D/S XSec. Num.(1F3H)

standby timer for sixty seconds before the Standby routine is initiated. Avalue of 13 sets the timer for sixty-five seconds. The minimum amountof time

ST9100AAT Interface DriveProduct Manual36211-001, Rev. A27 April 1993

3.7.4 Idle (E3H / 97H)When the drive receives this command, it sets BSY, makes a transitionto Idle mode, sets the standby timer if necessary,

3.7.5 Check Power Mode (E5H / 98H)This command returns a code for the power mode the drive is currentlyin or making a transition to. When the drive re

3.7.6 Set Sleep Mode (E6H / 99H)This command tells the drive to enter Sleep mode immediately. When thedrive receives this command, it sets BSY, enters

3.7.7 Identify Drive (ECH)The drive sends this command to system ROM during the system startupprocess. ROM clears the BUSY status within 100 nsec from

The following table summarizes the information transferred through theIdentify Drive command. Parameters listed with an “x” are variable. SeeSection 1

Word Description Value51 Minimum PIO data transfer cycle time 0000H52Minimum DMA transfer cycle time(not supported)0000H53 The fields in translation m

Bit settings for the Set Features command are shown below.EFHBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Command(1F7H)1 1 1 0 1 1 1 1Cyl. High(1F5H

3.7.10 Idle and Set Idle Timer (FAH)This command enables and disables the automatic Idle feature of thedrive. When the drive receives this command, it

3.7.11 Active and Set Idle Timer (FBH)This command enables and disables the automatic Idle feature of thedrive. When the drive receives this command,

3.7.12 Check Idle Mode (FDH)This command reports whether the drive is currently in or making atransition to Idle or Active mode. When the drive r

© 1993 Seagate Technology, Inc. All rights reservedPublication Number: 36211-001, Rev. ASeagate®, Seagate Technology®, and the Seagate logo are regist

3.7.13 Rest/Resume commandsSome host systems reduce overall power consumption by temporarilyremoving power from the disc drive. The Rest/Resume proces

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Command(1F7H)1 1 1 0 0 1 1 1Cyl. High(1F5H)XCyl. Low(1F4H)XDrv. Head(1F6H)1 0 1 D/S XSec. Num.(1F3H)XSe

3.7.13.2 Read Drive State (E9H)The Read Drive State command allows the host system to save certaindrive parameters to nonvolatile system memory before

3.7.13.3 Restore Drive State (EAH)This command allows the host system to restore the drive to the state itwas in at the time of the power-down in

Seagate Technology, Inc.920 Disc Drive, Scotts Valley, California 95066, USAPublication Number: 36211-001, Rev. A, Printed in USA

Contents1.0 Specification summary . . . . . . . . . . . . . . . . . . . . 11.1 Formatted capacity . . . . . . . . . .

2.2 Mounting the ST9100A . . . . . . . . . . . . . . . . . . 113.0 AT interface . . . . . . . . . . . . . . . .

FiguresFigure 1. Startup and operation current profile for the ST9100A . . 8Figure 2. ST9100A mounting dimensions . . . . . . . . . . .

1.0 Specification summary1.1 Formatted capacityGuaranteed Mbytes 85.8Guaranteed sectors 167,552Bytes per sector 5121.2 Physical organizationRead/Write