4.4.8LED Indications

The ODD notifies the operator of a serious error by turning on or blinking the LED lamp. Table 4.17 lists indication modes and operation.

Table 4.17 LED indications

 

 

LED blink cycle

Operation

 

 

Off

Command wait state

 

 

On

Command processing

 

 

 

Seek operation

 

 

 

Read/write processing (including cache processing)

 

 

 

Formatting

 

 

 

Power-on diagnostics

 

 

 

Spinning up (Including return from standby mode)

 

 

 

Spinning down (Including shifting to standby mode)

 

 

Blinking (on for a second and off for a

Starting the download only firmware (*1)

second repeatedly)

 

 

 

Blinking (on for 0.25 second and off

A power-on diagnostics error occurred.

for 0.25 second repeatedly)

 

 

 

Blinking (on for 0.5 second and off for

A thermal alarm occurred.

0.5 second repeatedly)

 

 

 

*1 The ODD control firmware is stored on the flash ROM and can be downloaded from the host with the WRITE BUFFER command. However, if any problem occurs during downloading, such as power failure, downloading is interrupted and the microcodes in the control firmware may be damaged. To download microcode data again in such a case, the ODD starts the emergency download firmware that simply supports only the WRITE BUFFER command and other basic commands.

4 - 20

C156-E142-02EN

Page 88
Image 88
Fujitsu MCE3064AP, MCF3064AP, MCE3130AP manual LED Indications, LED indications

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.