Floppy Disk InterfaceStandard Electronic and Physical interfaceDriver Output SignalsVOL 0 volts minimum 0.5 volts maximumVOH Open collector 5.25 volts maximumIOL 60 mAIOH 0.1 mAReceiver Input SignalsVT- 1.0 volts maximumVT+ 1.4 volts minimumTied to +5 volt supply through 150 ohm resistors. Schmidt Trigger with 0.8-volt hysteresisConnectorUnshrouded 34-pin header. Partial list of compatible connector plugs (for referenceonly):Manufacturer Model Part Number3-M N.A. 3414-6000T&B Ansley N.A. 609-3400MThe cable for the floppy connector should be good quality 34 conductor flat cable with28 gauge conductors. Addressing of the second drive may be generated by twistingconnector signals 10 through 16 or by changing jumpers in the floppy disk drives.Radiation ImmunityMeets radiation limits specified for a Class B computing device in accordance withthe specifications in Subpart J of Part 15 of FCC Rules. See FCC Compliance notesand recommendations in preface of this document.Reference Documents• EISA Specification, v3.11 from BCPR Services• Intel 82355 (BMIC) functional data sheet Revision 2.5 or later• Small Computer System Interface, ANSI X3T9.2/86-109 Revision 10h, Ameri-can National Standards InstituteEISA-to-Fast SCSI Host Adapter Introduction1-9
