User Guide

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SMBus is also called I2C bus. It is a two-wire bus developed for component communication (especially for semiconductor IC)
For example, set clock of clock
.
communicate with CPU and many masters and slaves to send/receive message.
generator for jumper-less motherboard. The data transfer rate of SMBus is only 100Kbit/s, it
allows one host to
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SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory module information such as DRAM
timing a
nd chip parameters. SPD can be used by BIOS
to decide best timing for this DIMM or RIMM.
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Ultra DMA (or, more accurately, Ultra DMA 33) is a protocol for transferring data between a hard disk drive through the
te of 33.3MB/s, twice as fast as the previous Direct Access Memory (DMA)
/
computer’s data path (or bus) to the computer’s random access memory (RAM). The Ultra DMA/33 protocol transfers data in
burst mode at a ra
interface. Ultra DMA was
eveloped as a proposed industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset
t in your computer means that it will boot (start) and open new
and applications that require large amounts of access to data on
d
that support computer bus technology. Ultra DMA suppor
applications more quickly. It will help users of graphic-intensive
the hard disk drive. Ultra DMA uses Cyclical Redundancy Checking (CRC), offering a new level of data protection. Ultra DMA
uses the same 40-pin IDE interface cable as PIO and D
MA.
16.6MB/s x2 = 33MB/s
16.6MB/s x4 = 66MB/s
16.6MB/s x6 = 100MB/s