Ata/133 Supported - AOpen AX4C Max II Online Manual

A X 4 C M a x I I
A X 4 C M a x I I
A T A / 1 3 3 S u p p o
A T A / 1 3 3 S u p p o
This motherboard supports
modes. The IDE bus is 16-bit, which means every transfer is two bytes. As the hard drive industry introduces faster and higher
capacity hard drives, the current Ultra ATA/100 interface causes a data bottleneck between the drive and the host computer.
To avoid this problem, hard disk manufacturers have introduced the new Ultra ATA-133 interface technology. Compared to
traditional ATA/100, ATA/133 has up to 33 percent increase in interface speed with transfer rate of 133MB/s. ATA/133
performance is ideal for new operating systems, such as Window XP, that demand more storage space and faster data transfer
rates from more responsive computing experiences.
To make good use of this new technology and enjoy its best performance, we recommend you to pair your system with a hard
disk equipped with ATA/133 technology so that your system's need for speeding on this motherboard can be satisfied.
Mode Clock Period Clock Count Cycle Time Data Transfer Rate
PIO mode 0 30ns
PIO mode 1 30ns
PIO mode 2 30ns
PIO mode 3 30ns
PIO mode 4 30ns
DMA mode 0 30ns
DMA mode 1 30ns
DMA mode 2 30ns
ATA33 30ns
ATA66 30ns
ATA100 20ns
ATA133 15ns
r t e d
r t e d
ATA66 , ATA100 or ATA133
20 600ns
13 383ns
8 240ns
6 180ns
4 120ns
16 480ns
5 150ns
4 120ns
4 120ns
2 60ns
2 40ns
2 30ns
IDE devices. Following table lists the transfer rate of IDE PIO and DMA
(1/600ns) x 2byte = 3.3MB/s
(1/383ns) x 2byte = 5.2MB/s
(1/240ns) x 2byte = 8.3MB/s
(1/180ns) x 2byte = 11.1MB/s
(1/120ns) x 2byte = 16.6MB/s
(1/480ns) x 2byte = 4.16MB/s
(1/150ns) x 2byte = 13.3MB/s
(1/120ns) x 2byte = 16.6MB/s
(1/120ns) x 2byte x 2 = 33MB/s
(1/60ns) x 2byte x 2 = 66MB/s
(1/40ns) x 2byte x 2 = 100MB/s
(1/30ns) x 2byte x 2 = 133MB/s
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O n l i n e M a n u a l
O n l i n e M a n u a l