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Fujitsu MHV2080AH, MHV2100AH, MHV2060AH, MHV2040AH manual Logical Interface, Dmarq

Models: MHV2040AH MHV2080AH MHV2060AH MHV2100AH

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Interface

[Signal]

[I/O]

[Description]

DMARQ

O

This signal is used for DMA transfer between the host system and

 

 

the device. The device asserts this signal when the device

 

 

completes the preparation of DMA data transfer to the host system

 

 

(at reading) or from the host system (at writing).

 

 

The direction of data transfer is controlled by the DIOR and

 

 

DIOW signals. This signal hand shakes with the DMACK-signal.

 

 

In other words, the device negates the DMARQ signal after the

 

 

host system asserts the DMACK signal. When there is other data

 

 

to be transferred, the device asserts the DMARQ signal again.

 

 

When the DMA data transfer is performed, IOCS16-, CS0- and

 

 

CS1- signals are not asserted. The DMA data transfer is a 16-bit

 

 

data transfer.

+5 VDC

I

+5 VDC power supplying to the device.

GND

-

Grounded signal at each signal wire.

Note:

 

 

“I” indicates input signal from the host to the device.

“O” indicates output signal from the device to the host.

“I/O” indicates common output or bi-directional signal between the host and the device.

5.2 Logical Interface

The device can operate for command execution in either address-specified mode; cylinder-head-sector (CHS) or Logical block address (LBA) mode. The IDENTIFY DEVICE information indicates whether the device supports the LBA mode. When the host system specifies the LBA mode by setting bit 6 in the Device/Head register to 1, HS3 to HS0 bits of the Device/Head register indicates the head No. under the LBA mode, and all bits of the Cylinder High, Cylinder Low, and Sector Number registers are LBA bits.

The sector No. under the LBA mode proceeds in the ascending order with the start point of LBA0 (defined as follows).

LBA0 = [Cylinder 0, Head 0, Sector 1]

Even if the host system changes the assignment of the CHS mode by the INITIALIZE DEVICE PARAMETER command, the sector LBA address is not changed.

LBA = [((Cylinder No.) ⋅ (Number of head) + (Head No.)) ⋅ (Number of sector/track)] + (Sector No.) − 1

5-6

C141-E217

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Fujitsu MHV2080AH, MHV2100AH, MHV2060AH, MHV2040AH manual Logical Interface, Dmarq
Page 81 Page 83

MHV2040AH, MHV2080AH, MHV2060AH, MHV2100AH specifications

The Fujitsu MHV series of hard disk drives, specifically the MHV2060AH, MHV2080AH, MHV2100AH, and MHV2040AH, are renowned for their reliability and performance in the mobile HDD segment. Designed primarily for use in laptops and other portable devices, these drives integrate cutting-edge technologies to meet the demands of today's data-intensive applications.

One of the hallmark features of the MHV series is its high data density, allowing for substantial storage capabilities in compact sizes. The MHV2060AH offers a storage capacity of 60 GB, while the MHV2080AH and MHV2100AH offer 80 GB and 100 GB respectively. The MHV2040AH provides a slightly more modest but still robust 40 GB of storage. This range of capacities ensures that users can select the model that best fits their storage needs.

The drives utilize the latest perpendicular magnetic recording (PMR) technology, which enhances recording efficiency and increases data storage densities. This technology significantly optimizes the use of disk surface area, providing better performance and more reliable data access. Additionally, the MHV series incorporates an advanced actuator system that ensures precision head positioning, enhancing data integrity and reducing error rates during read and write operations.

In terms of performance, the MHV series maintains a revolutions per minute (RPM) rating of 5400, which strikes a balance between speed and energy efficiency, making these drives suitable for low-power applications. The drives are also designed with a low acoustic level, generating minimal noise during operation—a crucial factor for mobile users who prefer quieter devices.

Furthermore, the Fujitsu MHV series features a robust shock resistance design, allowing them to withstand the rigors of mobile computing. This makes them suitable for use in portable environments subject to vibration and physical movement, thus ensuring data security and drive longevity.

Overall, the Fujitsu MHV2060AH, MHV2080AH, MHV2100AH, and MHV2040AH represent a formidable selection of mobile hard disk drives filled with advanced technologies and features, making them well-suited for a wide range of applications in today's fast-paced digital world. With their combination of storage capacity, performance, and durability, these drives continue to serve as reliable solutions for users seeking efficient data storage in portable formats.