FUJITSU MPC3065AH - Manual (Page 28)

C141-E056-01EN 2 - 3
(5) Air circulation system
The disk enclosure (DE) is sealed to prevent dust and dirt from entering. The disk enclosure
features a closed loop air circulation system that relies on the blower effect of the rotating
disk. This system continuously circulates the air through the recirculation filter to maintain
the cleanliness of the air in the disk enclosure.
(6) Read/write circuit
The read/write circuit uses a LSI chip for the read/write preamplifier. It improves data
reliability by preventing errors caused by external noise.
(7) Controller circuit
The controller circuit consists of an LSI chip to improve reliability. The high-speed
microprocessor unit (MPU) achieves a high-performance AT controller.
2.2 System Configuration
2.2.1 ATA interface
Figures 2.3 and 2.4 show the ATA interface system configuration. The drive has a 40-pin PC
AT interface connector and supports the PIO transfer till 16.7 MB/s (ATA-3, Mode 4), the
DMA transfer till 16.7 MB/s (ATA-3, Multiword mode 2), and the ultra DMA transfer till 33.3
MB/s (ATA-4, Ultra DMA mode 2).
2.2.2 1 drive connection
ATA interface AT bus
(Host interface)
Disk drive
HA
(Host adaptor)
Host
Figure 2.3 1 drive system configuration