Glossary

Axial acceleration

Acceleration on the recording layer along with the line perpendicular to the disk reference surface to a specified rotation speed. Axial acceleration is detected by optical means.

Axial displacement

A displacement at a point on the recording layer in a direction perpendicular to the disk reference surface from its original standard position. The standard position on the recording layer is detected optically using the thickness of the protective layer and refraction rate based on the disk reference surface.

Case

A cover of the optical disk. The case protects the disk from being damaged during handling and also allows the operator to exchange disks easily. The case also contains a label, write protection tab, automatic handling support, and media identification hole.

CDB (Command Descriptor Block)

A series of data describing input-output commands. CDB is sent from the initiator to the target.

Clamp area

A ring area on the disk on which a clamp force is applied by the clamp mechanism.

Command

An input-output instruction to the target. Described as CDB.

Control track

A track used to store media parameters and format information required to record and read data to or from the optical disk.

Defect management

In real time, an automatic program used to change the power, focus, tracking of reading and recording if an error is detected and to decide if

many error sectors should be discarded. In batch mode, a guideline used to re-record or save the disk.

Disk reference surface

An ideal flat ring surface of an ideal spindle that is in contact with the clamp area on the disk. It is perpendicular to the rotation axis.

Error correction code

An error correction code designed to correct specific errors in data.

Error detection and correction

A series of data by adding a redundant code to data in the existing format. In read mode, the decoder removes a redundant code and detects and corrects errors using redundant information.

Interleaving section

A process that physically arranges data units so that data resists burst errors.

LUN (Logical Unit Number)

A device address used to identify a logical unit.

Recording layer

A layer on the disk on which data is recorded at production or recording .

Recording power

An incidence power specified on the incidence surface. Used to form marks.

Sense code

A single-byte code set in sense data. This information is used to determine the type of error detected.

Sense data

Information generated by the target to report detailed error information if any error information is contained in the command end status.

C156-E142-02EN

GL - 1

Page 166
Image 166
Fujitsu MCE3064AP Axial acceleration, Axial displacement, Case, CDB Command Descriptor Block, Clamp area, Control track

MCE3130AP, MCE3064AP, MCF3064AP specifications

The Fujitsu MCF3064AP, MCE3064AP, and MCE3130AP are notable models in the realm of semiconductor technology and memory solutions. Each of these integrated circuits brings distinct features, technologies, and capabilities to various applications in modern electronics.

Starting with the MCF3064AP, this dynamic RAM device is built to provide efficient memory management and performance. It has a capacity of 64 kilobits, making it an ideal solution for early computer systems, embedded applications, and industrial electronics. The key characteristic of this chip is its fast access time, which facilitates quicker data retrieval and enhances overall system performance. The MCF3064AP supports a standard 16-pin DIP package, making it compatible with a variety of circuit designs, simplifying integration into existing systems.

On the other hand, the MCE3064AP also offers a 64 kilobit memory capacity but comes with enhanced features aimed at improving power efficiency and performance stability. This version is well suited for battery-operated devices where power consumption is a critical consideration. With its advanced static RAM architecture, the MCE3064AP ensures lower power usage while maintaining high-speed performance. Its operational characteristics allow it to function seamlessly over various temperature ranges, making it suitable for diverse application environments.

Lastly, the MCE3130AP distinguishes itself by offering an increased memory capacity of 128 kilobits. This model is tailored for applications that require higher data storage, such as telecommunications and networking equipment. The MCE3130AP employs sophisticated memory technology that not only optimizes data transfer rates but also enhances durability and reliability. It features an optimized pin configuration allowing easy integration into modern systems, along with advanced error detection and correction functionalities, ensuring data integrity across critical applications.

Collectively, the Fujitsu MCF3064AP, MCE3064AP, and MCE3130AP exemplify innovations in memory technology, catering to a wide range of electronic applications. Their distinctive features, varying capacities, and high-performance characteristics make them essential components in the advancement of computing systems and electronic devices. As technology continues to evolve, these semiconductor solutions from Fujitsu pave the way for more efficient, reliable, and powerful electronic systems.