Fujitsu 600C manual BUS Free phase, Signal delay times definition, Time Definition

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Table 4.5 Signal delay times definition

No.	Item	Time	definition

11	Hold time	45 ns	The minimum time added between the assertion of
			REQ (Or REQB) or ACK (or ACKB) and the
			changing of the data lines to provide hold time in the
			initiator or target while using synchronous data
			transfers. REQB and ACKIB timings only apply to
			optional wide data transfers.
12	Negation	90 ns	The minimum time that a target shall negate REQ (Or
			REQB) while using synchronous data transfers. Also,
			the minimum time that an initiator shall negate ACK
			(or ACKB) while using synchronous data transfers.
			REQB and ACKB timings only apply to optional
			wide data transfers.
13	Power-on to	10 sec	The recommended maximum time from power
	selection	(recommended)	application until an SCSI target is able to respond
	time		with appropriate status and sense data to the TEST
			UNIT READY, INQUIRY, and REQUEST SENSE
			commands
14	Reset to	250 ms	The recommended maximum time after a hard
	selection	(recommended)	RESET condition until an SCSI target is able to
	time		respond with appropriate status and sense data to the
			TEST UNIT READY, INQUIRY and REQUEST
			SENSE commands
15	Reset hold	25 æs	The minimum time over which RST must be kept
			asserted
16	Selection	200 æs	The maximum time required from the moment when
	abort time		selection or deselection of an initiator or target is
			detected until BSY is asserted
17	Selection	250 ms	The minimum time required for an initiator or target
	timeout	(recommended)	in the selection or deselection phase to wait for a
	delay		BSY response before it starts the timeout procedure
18	Transfer	⎯	The minimum allowable period, during sync data
	period		transfer, between the start of consecutive REQ pulses
			and the start of consecutive ACK pulses

4.3.1BUS FREE phase

The BUS FREE phase is used to indicate that no SCSI device is actively using the SCSI bus. and that it is available.

SCSI devices shall detect the BUS FREE phase after the SEL and BSY signals are both false for at least a bus settle delay.

SCSI devices shall release all SCSI bus signals within a bus clear delay after the BSY and SEL signals become continuously false for a bus settle delay.

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Contents Version Page Table of Contents Diagnostics Group 3 error flowchart no paper in ADF paper tray Page General GeneralSystem Block Diagram Outer View Device ConfigurationComponents Functional Specifications Remarks Functional SpecificationsEnvironmental Specifications Remarks Environmental SpecificationsRemoving the Shipping Bracket OperationRemove the shipping retainer Fasten the shipping retainer Indication Panel Power On/OffName Color Function Setting the Scsi ID and Connecting the Interface CableNames and functions of the indicators Scsi ID settingScsi Cable Connection Position 2.1 ADF Paper SpecificationsPaper Size Paper conditionsItems to avoid FIatbedADF readable area Readable areaDocument Setting Method When the document size is of letter/A4 size or smallerFlatbed When the document is a thick book Setting the ADF paper chute2 ADF Placing the document on the ADF paper chute Placing the documents on the ADF paper chuteSeparating the sheets for easy feeding Angling the document sheetsCleaning the document cover and the document glass CleaningCleaning inside the ADF Page Interface ∙ Busy ∙ Check Condition ∙ Good ∙ Reservation Conflict Connection Physical SpecificationsTermination Physical SpecificationSpecifications 1SCSI physical specificationsPin assignments Signal Name Pin NumberAddresses of Scsi devices System configurationSystem configuration Scsi Bus2Bus signals Bus signals3Bus phases vs. signal drive sources 1/2 Bus signal drive conditionsBus Phases Method of driving the interface signalOr connection Nonor connection 5Signal delay times definition Time Definition BUS Free phase Signal delay times definitionTime Definition Arbitration phase BSY Scsi SEL Selection phase Information Transfer phases Information Transfer phase type PhaseDB7 to 9,P Transfer Direction Asynchronous transfer from target to initiator Asynchronous information transferAsynchronous transler from initiator to target Commands Relative addressing is not supportedControl byte is not supported Bit and field described as Reserved are Reserve Unit commandCommands Operation Command Code hex DescriptionReserve Unit command Command phase initiator Õ target TP third party ByteTpid third party device ID Byte Release Unit command Release Unit command Command phase initiator → targetTP third party Byte Step Bus phase Initiator operation Target operation Inquiry commandInquiry command Command phase initiator → target 10 Inquiry commandEvpd enable vital product data Byte Code ByteCAllocation length Byte Aenc Inquiry data Data in phase target → initiatorISO version, Ecma version, Ansi approved version Byte SftRst Soft Reset ByteADF mode Byte 24, bit Color mode Byte 24, bit 6 toRequest Sense command Request Sense command Command phase initiator → target11 Request Sense command Valid Byte Sense data Data EN phase target → initiatorError code Byte Allocation length ByteSense key Byte ILI incorrect length indicator ByteFM file mark Byte EOM end of medium ByteSense code Send Diagnostic commandCommand-specific information bytes Bytes 8 to B Sense Additional DescriptionSend Diagnostic command Command phase initiator → target PF page format ByteSlftst selftest Byte Test Unit Ready command Contents of self-testResults of self-test Acknowledgment Test Unit Ready command Command phase initiator → targetSET Window command Command phase initiator → target SET Window commandWindow date Data OUT phase initiator → target Transfer Length Bytes 6 toHeader Window descriptor block Upper left X,YULX, ULY Bytes 6 to 9, a to D Y resolution XR, YR Bytes 2 to 3 and 4 toWindow identifier Byte Auto ByteRemarks Brightness ByteHalftone pattern Bytes lB to 1C lB reserved Bit per pixel Byte 1ARIF reverse image format Byte 1D, bit Bit ordering Bytes 1E to 1F18 Vender unique parameters byte 28 and later Update of ScanPartner 600C OEM manual7.4 B&W Scanning Vender unique parameters Compression type, argument Bytes 20 toPage Source Byte 2A, Bit Color Scanning Vender unique parameters19 Vendor unique parameters byte 28 and later ADF Byte 2A, BitLine count Byte 2F to Highlight value Byte 2BShadow value Byte 2C Line width Byte 2D to 2EObject Position command Object Position command Command phase initator → target Position type ByteBit Normal Unload objectLoad object Count Bytes 2 toRead command Step Bus phase Initiator operation Target operationADF sequence Transfer length TL Bytes 6 to Read command Command phase initiator → targetData type code Byte Data type qualifier Bytes 4 toPixel size data Data Type Code = Data in phase target → initiatorImage data Data Type Code = For binary dataScan Command phase initiator → target Scan commandCode Status of unit Status Status phase target initiatorPhase ATN detection timing MessagesATN detection Command Complete X00 Message in phase target → initiator Message typesMessage Abort X06 Message OUT phase initiator → target Message Reject X07 Message IN/OUT phase initiator → targetATN detection phase Action Message rejected Action No Operation X08 Message OUT phase initiator → targetBUS Device Reset X0C Message OUT phase initiator → target Phase when ATN is detected ActionIdendify X80 to XFF Message OUT phase initiator → target Initial sequence Command SequenceSingle Read Read command sequenceRead sequence for B&W mode Read sequenceMultiple Read Status Transition of Logical Unit Sense key Error TableItems for Specifying Window Page Online diagnostics Ready LED Paper Jam LED Error indicationOnline diagnostics Offline diagnostics results Offline diagnosticsDiagnostic flowcharts Group 1 error flowchart Lamp assemblyGroup 2 error flowchart Flatbed/ADF motor Group 3 error flowchart paper in ADF paper tray Group 3 error flowchart no paper in ADF paper tray