Write Write Extend | Fujitsu MAX3073FC, MAX3036FC, MAX3147FC

3.3 Defect Management

(3)Automatic alternate block allocation

• Automatic alternate block allocation at read operation

If the ARRE flag in the MODE SELECT parameter permits the automatic alternate block allocation, the HDD automatically executes the alternate block allocation and data duplication on the defective data block detected during the READ or READ EXTENDED command. This allocation method is the same as with the REASSIGN BLOCKS command (alternate sector treatment).

•Automatic alternate block allocation at write operation

If AWRE flag in the MODE SELECT parameter permits the automatic alternate block allocation, the HDD executes two kinds of automatic alternate processing during WRITE command processing as described below:

Type 1 (Reassignment of Uncorrectable Read Error)

1)Commands to be applied

-WRITE

-WRITE EXTEND

-WRITE at executing WRITE AND VERIFY

2)Application requirements

When any of the above commands is issued to LBA registered in the uncorrectable error log of the READ command (LBA log of uncorrectable error while the READ command is executed), the AWRE processing is applied.

3)AWRE processing

The following processings are performed when the LBA matches the one in the uncorrectable error log:

a)Primary media check

-Creates an uncorrectable error pattern (invalid LBA pattern) in the position of the error LBA, repeats the primary media check up to three times. If the error still occurs after the check repeated three times, it is judged to be defective. Then, it performs the alternate processing.

b)Alternate processing

-Alternate media check

Writes the data that causes an unrecoverable error into the alternate block, and performs the media check.

(If the alternate block is a defective sector, the block is registered to the G list, another alternate block is allocated.)

c)SA and defect map update processing (on alternate side)

When an error occurs in the alternate processing, this WRITE command terminates with error. When the alternate processing normally terminates, the WRITE command is executed.

C141-E234

3-13

MAX3147FC, MAX3036FC, MAX3073FC specifications

The Fujitsu MAX3036FC, MAX3073FC, and MAX3147FC are advanced integrated circuits that cater to a variety of high-performance applications, predominantly in the realm of communications and data transmission. Each model comes laden with unique features that help in addressing specific requirements in modern electronic systems.

The MAX3036FC, for instance, stands out due to its robust signal processing capabilities. It is particularly optimized for high-speed data communications, making it an excellent choice for applications that demand minimal latency and high data integrity. This featured IC operates within a wide voltage range, ensuring versatility in different circuit environments. It also adopts technology enabling low power consumption, an essential attribute in battery-operated devices.

In contrast, the MAX3073FC brings a distinct set of features suitable for more specialized applications. Its architecture supports a comprehensive serial data communication framework, making it ideal for designs that utilize various communication protocols, including those in industrial automation and automotive systems. The MAX3073FC supports advanced error correction mechanisms which enhance reliability, ensuring more accurate data transmission even over longer distances.

The MAX3147FC, on the other hand, focuses on integrating advanced timing and synchronization technologies. This model is particularly significant in applications that require precise timing signals, such as in telecommunications infrastructure and high-frequency trading systems. The MAX3147FC features integrated oscillators and buffers, streamlining the design process and reducing component count. Additionally, it boasts immunity to electromagnetic interference, a critical factor in maintaining signal integrity in noisy environments.

Common to all three models is Fujitsu's commitment to use cutting-edge manufacturing processes. This ensures the devices are compact, enhancing their suitability for modern designs where space is constrained. The ICs are also designed to handle varying temperature ranges, making them resilient for use in diverse environments.

Each IC is supported by comprehensive documentation and development tools that aid engineers in the rapid prototyping and deployment of their designs. The integration of these advanced features and technologies not only simplifies the design process but also accelerates time-to-market for new products. Whether addressing the demands of communication systems, industrial controls, or consumer electronics, the MAX3036FC, MAX3073FC, and MAX3147FC from Fujitsu represent exceptional flexibility and performance in the landscape of integrated circuit technology.