Initiating an Ultra DMA Data Out Burst | Maxtor 91792D7, 91024D4

AT INTERFACE DESCRIPTION

DMARQ
(device)
tUI
DMACK-
(host)
tACK	tENV
STOP
(host)
tZIORDY	tLI	tUI
DDMARDY-
(device)
tACK
HSTROBE
(host)
	tDVS	tDVH
DD(15:0)
(host)
tACK
DA0, DA1, DA2,
CS0-, CS1-
	Figure 5 - 9

HSTROBE

at host

DD(15:0) at host

Initiating an Ultra DMA Data Out Burst

		t2CYC
	tCYC		tCYC
			t2CYC
tDVH	tDVS	tDVH	tDVH
	tDVS		tDVS

HSTROBE at device

DD(15:0) at device

tDH

tDS

tDH

tDS

tDH

Figure 5 - 10

Sustained Ultra DMA Data Out Burst

5 – 29

Image 40

Maxtor 91792D7, 91024D4, 90750D3, 91280D5, 91536D6, 92048D8 manual Initiating an Ultra DMA Data Out Burst

Contents

HA RD Drive Produc T MA Nual DiamondMax Plus Revisions Manual No Before You Begin U T I O N Contents Product Specifications Handling and Installation AT Interface Description Host Software Interface Service and Support Interface CommandsGlossary Figures Introduction Maxtor CorporationManual Organization Abbreviations Signal Conventions ConventionsKey Words Numbering DiamondMax Plus 5120 Key Features Product Description Product Features Functional / Interface On-the-Fly Hardware Error Correction Code ECC Logical Block AddressingDefect Management Zone DMZ Software ECC Correction Read-Ahead Mode Cache ManagementBuffer Segmentation Automatic Write Reallocation AWR Major HDA Components Subsystem Configuration Jumper Location/ConfigurationCylinder Limitation Dual Drive Support Product Specifications Drive ConfigurationPerformance Specifications Models and Capacities Physical Dimensions Parameter Standard Metric Power Requirements Power Mode DefinitionsEPA Energy Star Compliance Environmental Limits Reliability Specifications Shock and Vibration Radiated Electromagnetic Field Emissions EMC Compliance Safety Regulatory ComplianceCanadian Emissions Statement Handling and Installation Hard Drive Handling PrecautionsPre-formatted Drive Important Notice Unpacking and Inspection Multi-pack Shipping Container Recommended Mounting Configuration Physical InstallationRepacking Before You Begin General Requirements Mounting Drive in System Attaching Interface Power Cables System Setup Hard Drive Preparation System Hangs During Boot Interface Connector SignalAT Interface Description Pin Description Summary PIN Name Signal Name Signal Description Pin Description Table Timing Parameters Mode PIO Timing DMA Timing Ultra DMA Timing Timing Parameters all times in nanoseconds Sustained Ultra DMA Data In Burst Device Terminating an Ultra DMA Data In Burst Initiating an Ultra DMA Data Out Burst Device Pausing an Ultra DMA Data Out Burst Device Terminating an Ultra DMA Data Out Burst Error Register Features RegisterHost Software Interface Task File Registers Sector Count Register Sector Number RegisterCylinder Number Registers Device/Head Register Command Register Command Name Command Code Parameters Used SDH Summary Control Diagnostic Registers Alternate Status RegisterDevice Control Register Digital Input Register Reset Handling Reset and Interrupt HandlingInterrupt Handling Interface Commands Set Feature Commands Read Sectors Read CommandsRead Verify Sectors Read DMA Read Multiple Write Commands Set Multiple ModeWrite Sectors Write Verify Sectors Write Multiple Write DMA Set Feature Commands Set Features Mode Power Mode Commands Sleep Mode Initialization Commands Identify Drive 15-8 = PIO data transfer mode = Write Cache enabled Initialize Drive Parameters Execute Drive Diagnostic Seek, Format and Diagnostic CommandsFormat Track A.R.T. Command Set Execute S.M.A.R.T Service and Support Service PolicyNo Quibble Service Support Customer Service MaxFax ServiceInternet Glossary Direct Access Direct Memory AccessError Correction Code ECC Error Free Hard Error Head Disk Assembly HDAFile Allocation Table FAT Flux Changes PER Inch Phase Locked Loop PLL Logical AddressLogical Block Addressing Logical Sector Random Access Memory RAM Read Gate SignalRecoverable Error Sector Pulse Signal UN-CORRECTABLE Error Unrecoverable ErrorWrite Gate Signal THIN-FILM Media