Samsung SFD-321B specifications Disk Change / Ready

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FLOPPY DISK DRIVE SPECIFICATION

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MODEL	SFD-321B

5.4.5Disk Change / Ready

By selecting proper trace plugs, this signal line (pin #34) can be used for Ready or Disk Change line.

-. Ready

This line becomes active "LOW" when the drive is selected, a disk is clamped and the spindle motor is up to speed.

(after counting at least two Index pulses) Otherwise this line goes logical "HIGH" level.

-. Disk Change

This line is active "LOW" unless disk is clamped and a Step pulse is received when the drive is selected.

DRIVE SELECT
DISK IN	inserted	ejected
STEP
DISK
CHANGE		0.5 ㎲ Max
		0.5 ㎲ Max

0.5 ㎲ Max

SEMA ELECTRONICS CO.,LTD

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Contents OEM Manual Floppy Disk Drive Specification SFD-321BSafety Standards Packaging Description Application Disk UsedPerformance LOW High E M Density Standard OptionFloppy Disk Drive Specification Specification Environmental ConditionsE M Specification ReliabilityPower Supply Physical Specifications Page Page Page Power Interface Signal InterfaceSFD-321B*1 Signal Interface Connector Side Interface ConnectorsSignal Interface Connector and Cable Side Connector Connector Power Interface ConnectorPower Interface Connector and Cable Side Connector Signal Logic Input Level Output Level *1 Signal LevelRecommended Interface Circuit Density Select Input SignalsType Contents Drive Select 0Direction Select Density Mode Transfer Rate TypMotor On StepSide Select Output SignalsWrite Gate IndexWrite Protect TrackRead Data MFM Disk Change / Ready Timing Diagram Safety Standards S1ARB00001 Label DescriptionSerial Number Label Marking Label DescriptionPage Page Trace Options Trace Name DescriptionSelection of Bezel Type Other Options Buyer SelectionMode Color of Bezel, ButtonGeneral Comment