Toshiba XM-7002B specifications 17/27, Timing of Host Interface Ultra DMA

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6.2.4.Timing of Host Interface (Ultra DMA )

Figure 12 shows the Host Interface Ultra DMA word Timings

DMARQ	tUI
DMACK-
	tACK	tFS	t2CYC
	tACK
STOP			tCYC	tCYC
STOP		tENV	tCYC
		tENV
DMARDY
		t2AD
	t2IORDY
STROBE
		tDVS tDVH tDVS		tDVH	tDVS tDVH
DD
(15:0)

tMLI
tRP
tLI	tACK
tLI
tRFS
tDVS	tDVH
CRC

	Ultra DMA Mode 2	Min time (ns)	Max time	(ns)
	timing parameters min (ns) max (ns)	Min time (ns)	Max time	(ns)
	timing parameters min (ns) max (ns)

t2CYC	Typical Sustained Average Cycle time	120

tCYC	Cycle time	55

tDVS	Data Setup time	34

tDVH	Data Hold time	6

tUI	Unlimited Interlock time	0

tACK	Setup and Hold Time for DMACK-	20

tENV	Envelope time	20	70

t2AD	Minimum Delay time for Driver	0

t2IORODY	Minimum time for DMACK-	20

tFS	First STROBE time	0	170

tRFS	Ready-to-Final STROBE time		50

tRP	Ready-to-Pause time	100

tLI	Limited Iuterlock time	0	150

tMLI	Interlock with minimum	20

Figure 12 Host Interface Timing (Ultra DMA)

17/27

XM-7002B Rev.1.0

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Contents 12095 ToshibaXM-7002B Rev.1.0 Contents XM-7002B Rev.1.0 Introduction Features CD-RW, CD-R, CD-TEXT SpecificationsXM-7002B Rev.1.0 Page Page Page Adapter Mounting External Dimensions 10/27 ConfigurationXM-7002B Block Diagram Functions 12/27Interface 13/27ILO 14/27IOCS16 Iordy 15/27Shows the Host Interface DMA multi word Timings 16/27Timing of Host Interface Ultra DMA 17/2718/27 Connector pin assignments19/27 20/27 Audio 21/2722/27 Device Configuration23/27 Busy IndicatorSafety standards/Agency Approvals Maintenance24/27 Emergency Eject25/27 AccessoriesElectrostatic Discharge Packaging26/27 Toshiba27/27 EU-Declaration of Conformity