Maxtor 82160D2 Control Diagnostic Registers, Alternate Status Register, Device Control Register

Page 46

HOST SOFTWARE INTERFACE

Control Diagnostic Registers

These I/O port addresses reference three Control/Diagnostic registers:

I/ O PORT

READ

WRITE

 

 

 

3F6h

Alternate Status

Fixed Disk Control

 

 

 

3F7h

Digital Input

Not used

 

 

 

Alternate Status Register

Contains the same information as the Status register in the Task File. However, this register may be read at any time without clearing a pending interrupt.

Device Control Register

Contains the software Reset and Enable bit to enable interrupt requests to the host. Bit definitions follow:

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

0

0

0

0

0

SRST

IEN

0

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset

IRQ Enable

 

 

 

 

 

 

 

 

 

Reset – Setting the software Reset bit holds the drive in the reset state. Clearing the bit re-enables the drive. The software Reset bit must be held active for a minimum of 5 µsec.

IRQ Enable – Setting the Interrupt Request Enable to 0 enables the IRQ 14 signal to the host. When this bit is set

to 1, IRQ14 is tri-stated, and interrupts to the host are disabled. Any pending interrupt occurs when the bit is set to 0. The default state of this bit after power up is 0 (interrupt enabled).

Digital Input Register

Contains information about the state of the drive. Bit definitions follow:

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

x

-WG

-HS3

-HS2

-HS1

-HS0

-DS1

DS0

 

 

 

 

 

 

 

 

Reserved

 

Head

Head

Head

Head

Drive

Drive

 

Gate

Select 3

Select 2

Select 1

Select 0

Select 1

Select 0

 

 

 

 

 

 

 

 

Bit 7 of the host data bus is not driven when this register is read.

-Write Gate – Reflects the state of the active low write gate signal on the drive.

-Head Select 3 through -Head Select 0 – Represents the ones complement of the currently selected head number.

-Drive Select 1 – Is 0 if drive 1 selected; 1 otherwise.

-Drive Select 0 – Is 0 if drive 0 selected; 1 otherwise.

6 – 5

Page 45 Page 47
Image 46
Page 45 Page 47
Contents DiamondMax REV EC no Section Description Date Before You Begin U T I O NContents Handling and Installation Product SpecificationsAT Interface Description Host Software Interface Service and Support Interface CommandsGlossary Figures Manual Organization IntroductionMaxtor Corporation AbbreviationsKey Words Signal ConventionsConventions NumberingDiamondMax 2160 Key Features Product DescriptionProduct Features Functional / InterfaceDefect Management Zone DMZ On-the-Fly Hardware Error Correction Code ECCLogical Block Addressing Software ECC CorrectionBuffer Segmentation Read-Ahead ModeCache Management Automatic Write Reallocation AWRMajor HDA Components Cylinder Limitation Subsystem ConfigurationJumper Location/Configuration Dual Drive SupportPerformance Specifications Product SpecificationsDrive Configuration Models and CapacitiesOutline and Mounting Dimensions Physical DimensionsParameter Standard Metric EPA Energy Star Compliance Power Requirements AveragePower Mode Definitions Environmental LimitsReliability Specifications Shock and VibrationSafety Regulatory Compliance Standard Test MethodsPre-formatted Drive Handling and InstallationHard Drive Handling Precautions Important NoticeUnpacking and Inspection Multi-pack Shipping ContainerRecommended Mounting Configuration Physical InstallationRepacking Mounting Drive in System Drive Jumper SettingsInstalling 5.25-inch Mounting Brackets Master Device Slave DeviceMounting Drive in 5.25-inch Bay Inch InstallationMounting Drive in 3.5-inch Bay Attaching IDE Interface and Power Cables IDE Interface and Power Cabling DetailSystem Interface Card Cabling Attaching System CablesSystem Mother board Cabling Setting the Bios Cmos System SetupSet the Bios Cmos parameters as follows System Hangs During Boot Model CYL SPTHard Drive Preparation System/Drive InformationAT Interface Description Interface ConnectorData Connector Pin Description SummaryPIN Name Signal Name Signal Description Pin Description TablePIO Timing PIO Data Transfer To/From DeviceDMA Timing Multi-word DMA Data TransferUltra DMA Timing Initiating an Ultra DMA Data In BurstHost Pausing an Ultra DMA Data In Burst Sustained Ultra DMA Data In BurstDevice Terminating an Ultra DMA Data In Burst Host Terminating an Ultra DMA Data In BurstInitiating an Ultra DMA Data Out Burst Sustained Ultra DMA Data Out BurstDevice Pausing an Ultra DMA Data Out Burst Host Terminating an Ultra DMA Data Out BurstDevice Terminating an Ultra DMA Data Out Burst Host Software Interface Error RegisterFeatures Register Task File RegistersCylinder Number Registers Sector Count RegisterSector Number Register Device/Head RegisterCommand Register Summary Command Name Command Code Parameters UsedTimer Value TIME-OUT Period SDHDevice Control Register Control Diagnostic RegistersAlternate Status Register Digital Input RegisterReset Handling Reset and Interrupt HandlingInterrupt Handling Interface Commands Set Feature CommandsRead Sectors Read CommandsRead Verify Sectors Read DMA Read MultipleWrite Sectors Write CommandsSet Multiple Mode Write Verify SectorsWrite Multiple Write DMASet Features Mode Set Feature CommandsValue Description Power Mode Commands Timer Value TIME-OUT Period Word Content Description Initialization CommandsIdentify Drive Word Content Description = Write Cache enabled Initialize Drive Parameters Error Code Description Seek, Format and Diagnostic CommandsExecute Drive Diagnostic Format TrackA.R.T. Command Set Execute S.M.A.R.TNo Quibble Service Service and SupportService Policy SupportCustomer Service MaxFax ServiceBulletin Board Service Internet

82160D2, 84320D4, 2160, 83240D3, 86480D6 specifications

Maxtor, known for its innovative storage solutions, produced several pivotal hard drive models during the late 1990s and early 2000s, namely the Maxtor 88400D8, 86480D6, 83240D3, 2160, and 84320D4. Each of these drives showcased unique features and technologies that catered to various computing needs.

The Maxtor 88400D8 stood out with its impressive storage capacity of 8.4 GB, which was considerable at the time. It employed the IDE interface, ensuring broad compatibility with most personal computers. The drive utilized a 5400 RPM spindle speed, optimizing data transfer rates for everyday applications. With a 2 MB cache, it facilitated smoother data retrieval, making it a reliable choice for both home and office use. This model exemplified Maxtor's commitment to enhancing user experience through advanced technologies.

Another noteworthy model, the Maxtor 86480D6, offered an 8.6 GB storage capacity, predicated on similar design principles as the 88400D8. It also featured a 5400 RPM spindle speed and an IDE interface. Its greater data density further improved performance, reducing the time required for searching and accessing large volumes of information. The 86480D6 was particularly favored by users with intensive storage needs, such as graphic designers and multimedia creators.

The Maxtor 83240D3, with a storage capacity of 3.2 GB, catered to users seeking a balance between performance and size. This drive also operated at 5400 RPM and featured an IDE interface. Its compact size made it an attractive option for entry-level systems and budget-conscious consumers who needed dependable storage without excessive capacity.

The Maxtor 2160 and 84320D4 models further diversified the line with distinct features suitable for different user segments. The 2160 offered 2.1 GB of storage, appealing particularly to users of basic office applications. In contrast, the 84320D4 provided 4.3 GB of space, marking a mid-range option for users requiring additional capacity without leapfrogging into high-end solutions.

All these Maxtor models incorporated technologies enhancing reliability and performance, such as Advanced Format technology, which optimized data organization, ensuring efficient use of storage space. These drives also showcased an emphasis on low power consumption, which aligned with growing concerns over energy efficiency in computing.

In summary, the Maxtor 88400D8, 86480D6, 83240D3, 2160, and 84320D4 were crucial entries in the hard drive market, bringing forth features that addressed the diverse needs of users, from casual consumers to professionals demanding superior performance. Their legacy continues to influence hard drive design and performance standards in contemporary storage solutions.
Top Page Image Contents