5.2 Logical Interface

[Diagnostic code]

X’01’: No Error Detected.

X’02’: HDC Register Compare Error

X’03’: Data Buffer Compare Error.

X’05’: ROM Sum Check Error.

X’80’: Device 1 (slave device) Failed.

Error register of the master device is valid under two devices (master and slave) configuration. If the slave device fails, the master device posts X’80’ OR (the diagnostic code) with its own status (X’01’ to X’05’).

However, when the host system selects the slave device, the diagnostic code of the slave device is posted.

(3) Features register (X’1F1’)

The Features register provides specific feature to a command. For instance, it is used with SET FEATURES command to enable or disable caching.

(4) Sector Count register (X’1F2’)

The Sector Count register indicates the number of sectors of data to be transferred in a read or write operation between the host system and the device. When the value in this register is X’00’, the sector count is 256.

When this register indicates X’00’ at the completion of the command execution, this indicates that the command is completed successfully. If the command is not completed successfully, this register indicates the number of sectors to be transferred to complete the request from the host system. That is, this register indicates the number of remaining sectors that the data has not been transferred due to the error.

The contents of this register has other definition for the following commands; INITIALIZE DEVICE PARAMETERS, SET FEATURES, IDLE, STANDBY and

SET MULTIPLE MODE.

(5) Sector Number register (X’1F3’)

The contents of this register indicates the starting sector number for the subsequent command. The sector number should be between X’01’ and [the number of sectors per track defined by INITIALIZE DEVICE PARAMETERS command.

Under the LBA mode, this register indicates LBA bits 7 to 0.

C141-E104-02EN

5-9

Page 85 Page 87
Page 86
Image 86
Fujitsu MHM215OAT, MHM200AT, MHM2100AT, MHL2300AT manual SET Multiple Mode
Page 85 Page 87

MHM215OAT, MHM200AT, MHL2300AT, MHM2100AT specifications

Fujitsu, a leader in storage technology, has developed a range of hard disk drives designed for reliability and performance, catering to both enterprise and consumer needs. The Fujitsu MHM2100AT, MHL2300AT, MHM200AT, and MHM215OAT models are part of this impressive lineup, showcasing various features and technologies that set them apart.

The MHM2100AT model is known for its 2.5-inch form factor, offering a storage capacity of 100GB. It operates at a speed of 5400 RPM, which balances performance and power efficiency. The drive utilizes ATA-6 interface (Parallel ATA) ensuring compatibility with a wide range of systems. One of its primary features is the advanced cache memory architecture, which allows for quicker access to frequently used data. This enhances overall system performance while preserving energy consumption.

The MHL2300AT provides a step up, with its 300GB of capacity. It also maintains a 5400 RPM speed and is designed for optimal heat dissipation and durability. This model is particularly suited for mobile computing applications due to its lightweight design and low power requirements. The MHL2300AT also integrates a sophisticated error correction code (ECC) technology, enhancing data integrity during storage and retrieval processes.

Moving on to the MHM200AT, this unit provides substantial storage of 200GB, maintaining a similar 5400 RPM speed. What sets the MHM200AT apart is its focus on data security with Built-in Security Features such as disk encryption capabilities. This model is suitable for professionals dealing with sensitive information, ensuring both performance and protection against data breaches.

Lastly, the MHM215OAT, another key model, balances user-friendly design with performance metrics. It offers a generous 150GB capacity and features an enhanced seek time for quick file access. With its emphasis on reliability, the MHM215OAT is often utilized in environments where uptime is critical, such as in commercial servers or high-performance workstations.

In conclusion, Fujitsu's MHM2100AT, MHL2300AT, MHM200AT, and MHM215OAT each possess unique features and technologies that cater to diverse user needs. Their combination of efficient power consumption, enhanced data integrity, and reliability make them compelling choices for businesses and individuals alike. Whether for mobile devices, personal computing, or enterprise applications, these models continue to exemplify Fujitsu's commitment to quality and performance in storage solutions.
Top Page Image Contents