Maxtor 90683U2, 91024U3, 92049U6, 91366U4, 91707U5, 92732U8 manual Ultra DMA Timing, Mode MIN MAX

Page 37

AT INTERFACE DESCRIPTION

Ultra DMA Timing

TIMING PARAMETERS (all times in nanoseconds)

MODE 0

MODE 1

MODE 2

 

 

 

 

 

 

 

 

 

 

MIN

MAX

MIN

MAX

MIN

MAX

 

 

 

 

 

 

 

 

tCYC

Cycle Time (from STROBE edge to STROBE edge)

114

 

75

 

55

 

t2CYC

Two cycle time (from rising edge to next rising edge or

235

 

156

 

117

 

 

from falling edge to next falling edge of STROBE)

 

 

 

 

 

 

tDS

Data setup time (at recipient)

15

 

10

 

7

70

tDH

Data hold time (at recipient)

5

 

5

 

5

 

tDVS

Data valid setup time at sender (time from data bus being

70

 

48

 

34

5

 

valid until STROBE edge)

 

 

 

 

 

 

tDVH

Data valid hold time at sender (time from STROBE edge

6

 

6

 

6

20

 

until data may go invalid)

 

 

 

 

 

 

tFS

First STROBE (time for device to send first STROBE)

0

230

0

200

0

170

tLI

Limited interlock time (time allowed between an action by

0

150

0

150

0

150

 

one agent, either host or device, and the following action

 

by the other agent)

 

 

 

 

 

 

tMLI

Interlock time with minimum

20

 

20

 

20

 

tUI

Unlimited interlock time

0

 

0

 

0

 

tAZ

Maximum time allowed for outputs to release

 

10

 

10

 

10

tZAH

Minimum delay time required for output drivers turning on

20

 

20

 

20

 

tZAD

(from released state)

0

 

0

 

0

 

 

 

 

 

tENV

Envelope time (all control signal transitions are within the

20

70

20

70

20

70

 

DMACK envelope by this much time)

 

 

 

 

 

 

tSR

STROBE to DMARDY (response time to ensure the

 

50

 

30

 

20

 

synchronous pause case when the recipient is pausing)

 

 

 

 

 

 

tRFS

Ready-to-final-STROBE time (no more STROBE edges may

 

75

 

60

 

50

 

be sent this long after receiving DMARDY- negation)

 

 

 

 

 

 

tRP

Ready-to-pause time (time until a recipient may assume

160

 

125

 

100

 

 

that the sender has paused after negation of DMARDY-)

 

 

 

 

 

 

tIORDYZ

Pull-up time before allowing IORDY to be released

 

20

 

20

 

20

tZIORDY

Minimum time device shall wait before driving IORDY

0

 

0

 

0

 

tACK

Setup and hold times before assertion and negation of

20

 

20

 

20

 

 

DMACK-

 

 

 

 

 

 

tSS

Time from STROBE edge to STOP assertion when the

50

 

50

 

50

 

 

sender is stopping

 

 

 

 

 

 

DMARQ

 

(device)

 

tUI

 

DMACK-

 

(host)

 

tACK

tENV

STOP

 

(host)

 

tACK

tENV

HDMARDY-

 

(host)

 

tZIORDY

 

DSTROBE

 

(device)

 

tAZ

 

DD(15:0)

 

tACK

 

DA0, DA1, DA2,

 

CS0-, CS1-

 

tFS

tZAD

 

tFS

 

tZAD

 

tVDS

tDVH

Figure 5 - 4

Initiating an Ultra DMA Data In Burst

5 – 5

Page 36 Page 38
Image 37
Page 36 Page 38
Contents HA RD Drive Produc T MA Nual DiamondMax Plus REV EC no Section Description Date U T I O N Before You BeginContents Handling and Installation Product SpecificationsHost Software Interface AT Interface DescriptionService and Support Interface CommandsGlossary Figures Maxtor Corporation IntroductionManual Organization AbbreviationsConventions Signal ConventionsKey Words NumberingProduct Description DiamondMax Plus 6800 Key FeaturesFunctional / Interface Product FeaturesLogical Block Addressing On-the-Fly Hardware Error Correction Code ECCDefect Management Zone DMZ Software ECC CorrectionCache Management Read-Ahead ModeBuffer Segmentation Automatic Write Reallocation AWRMajor HDA Components Jumper Location/Configuration Subsystem ConfigurationCylinder Limitation Dual Drive SupportDrive Configuration Product SpecificationsPerformance Specifications Models and CapacitiesParameter Standard Metric Physical DimensionsPower Mode Definitions Power RequirementsEPA Energy Star Compliance Environmental LimitsShock and Vibration Reliability SpecificationsRadiated Electromagnetic Field Emissions EMC Compliance Safety Regulatory ComplianceCanadian Emissions Statement Hard Drive Handling Precautions Handling and InstallationPre-formatted Drive Important NoticeMulti-pack Shipping Container Unpacking and InspectionRecommended Mounting Configuration Physical InstallationRepacking Tools for Installation Handling PrecautionsSystem Requirements Drive Identification InformationHard Drive Identification General RequirementsInstalling 5.25-inch Mounting Brackets and Rails Systems Using Cable SelectInstalling in a Device Bay Mounting Drive in SystemAttaching System Cables Attaching Interface and Power CablesSetting the Bios Cmos System SetupBios Cmos Parameters Hard Drive Preparation System Hangs During Boot AT Interface Description Interface ConnectorPin Description Summary PINPin Description Table PIN Name Signal Name Signal DescriptionPIO Timing Timing Parameters ModeDMA Timing Ultra DMA Timing Mode MIN MAXSustained 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 Features Register Error RegisterHost Software Interface Task File RegistersSector Number Register Sector Count RegisterCylinder Number Registers Device/Head RegisterCommand Register Timer Value TIME-OUT Period Command Name Command Code Parameters UsedSummary Alternate Status Register Control Diagnostic RegistersDevice Control Register Digital Input RegisterReset Handling Reset and Interrupt HandlingInterrupt Handling Set Feature Commands Interface CommandsRead Sectors Read CommandsRead Verify Sectors Read Multiple Read DMASet Multiple Mode Write CommandsWrite Sectors Write Verify SectorsWrite DMA Write MultipleSet Features Mode Set Feature CommandsValue Description Power Mode Commands Sleep Mode Word Content Description Initialization CommandsIdentify Drive 15-8 = PIO data transfer mode = Write Cache enabled Initialize Drive Parameters Execute Drive Diagnostic Seek, Format and Diagnostic CommandsError Code Description Format TrackExecute S.M.A.R.T A.R.T. Command SetService Policy Service and SupportNo Quibble Service SupportCustomer Service MaxFax ServiceInternet Glossary Access TimeCylinder Zero Gigabyte GB Logical Block Addressing Read Gate Signal THIN-FILM Media

91024U3, 92049U6, 90683U2, 91707U5, 92732U8 specifications

The Maxtor series of hard drives, specifically the models 91366U4, 92732U8, 91707U5, 90683U2, and 92049U6, exemplify the evolution of storage technology during the late 1990s and early 2000s, pivotal in shaping contemporary data storage solutions. These hard drives are recognized for their reliability, performance, and impressive capacities for their time.

The Maxtor 91366U4 features a storage capacity of 13.6 GB, delivering a spindle speed of 5,400 RPM. Its UATA interface allows for a fast data transfer rate, which was notable in its category. The model incorporates Advanced Power Management, contributing to lower power consumption and reduced heat generation, making it an appealing choice for system builders looking to enhance system longevity.

Moving on to the Maxtor 92732U8, this model increased capacity to 27.3 GB, aligning with the growing demand for more storage from users and businesses alike. This drive maintained a 5,400 RPM spindle speed while improving the access times, which aided in speeding up file retrieval processes. Noteworthy is its Plug and Play capability, which simplified installation and compatibility across various systems.

The Maxtor 91707U5 brought forward advancements in data integrity with the inclusion of features such as error correction codes. With a storage size of 17.3 GB and similar operational speeds, this model catered to users seeking reliable data management. Its robust build aimed to protect against accidents and environmental factors, ensuring data was safe while providing consistent performance.

The Maxtor 90683U2, with its 68.3 GB capacity, is particularly recognized for its reliability in desktop applications. The drive integrates a combination of Unidirectional Technology, driving advancements in read/write capabilities, and extensive shock protection, making it an ideal candidate for users with intensive data processing requirements.

Lastly, the Maxtor 92049U6 is known for its balanced blend of performance and functionality. Holding a capacity of 49.1 GB and retaining the sophisticated features of its predecessors, this model enabled faster data access and storage capabilities that met the needs of both home and professional users.

Together, these Maxtor hard drives embody the technological strides in the evolution of data storage—offering capacities and performances that set a standard in the industry and laid the groundwork for future storage solutions. The combination of innovative technologies and practical features made these drives highly sought after during their respective periods, and their legacy continues to influence modern data storage products.
Top Page Image Contents