IEI Integration IEM-9452 - Manual (Page 143)

IEM-9452 ETX Module
Page 127
expansion devices. The serial port on a personal computer is usually a
male DB-9 connector.
DAC The Digital-to-Analog Converter (DAC) converts digital signals to analog
signals.
DDR Double Data Rate refers to a data bus transferring data on both the rising
and falling edges of the clock signal.
DMA Direct Memory Access (DMA) enables some peripheral devices to
bypass the system processor and communicate directly with the system
memory.
DIMM Dual Inline Memory Modules are a type of RAM that offer a 64-bit data
bus and have separate electrical contacts on each side of the module.
DIO The digital inputs and digital outputs are general control signals that
control the on/off circuit of external devices or TTL devices. Data can be
read or written to the selected address to enable the DIO functions.
EHCI The Enhanced Host Controller Interface (EHCI) specification is a
register-level interface description for USB 2.0 Host Controllers.
EIDE Enhanced IDE (EIDE) is a newer IDE interface standard that has data
transfer rates between 4.0 MBps and 16.6 MBps.
FSB The Front Side Bus (FSB) is the bi-directional communication channel
between the processor and the Northbridge chipset.
GPIO General purpose input
HDD Hard disk drive (HDD) is a type of magnetic, non-volatile computer
storage device that stores digitally encoded data.
ICH The Input/Ouput Controll Hub (ICH) is an Intel® Southbridge chipset.
IrDA Infrared Data Association (IrDA) specify infrared data transmission
protocols used to enable electronic devices to wirelessly communicate