Emerson COM Express Carrier Design Manual page 14

GBE Gigabit Ethernet
HD Audio High Definition Audio
2
I C Inter Integrated Circuit
A signaling scheme that uses two wires to allow communication between integrated
circuits. This reads and loads register values.
IDE Integrated Device Electronics
IDE is synonymous with PATA and is a hard-disk standard that uses a single-ended,
parallel-bus interconnect.
JEDEC Industry standards organization (originally known as the Joint Electron Device
Engineering Council)
JEDEC standards cover memory modules, memory sockets, IC packaging, memory chip
organizations, and more.
Legacy Free A system without a PS2 keyboard/mouse controller. The keyboard and mouse, if used,
are plugged into USB ports.
LPC Low Pin Count
An Intel-defined standard for attaching low-bandwidth peripherals such as serial ports,
keyboard controllers, and Super I/Os to a computer system. As the name implies, few
pins are involved, making LPC easy to implement.
LVDS Low Voltage Differential Signaling
Many modern high-speed interfaces, such as PCIe and SATA, are LVDS interfaces.
However, the term LVDS commonly refers to a serialized differential interface, which is
used for flat-panel interfacing. In this document and in the COM Express Specification,
LVDS refers primarily to a flat-panel interface
MAC Media Access Controller
The digital hardware control section of a LAN implementation.
MicroATX An Intel-defined form factor size for motherboards: 9.6 in x 9.6 in
Microstrip A constant-width PCB trace on an outer PCB layer that is a fixed height above a
reference plane.
PATA Parallel AT Attachment
A hard disk standard (synonymous with IDE) that uses a single-ended parallel bus
interconnect.
PHY Physical layer interface of a LAN implementation.
The physical layer drives physical media such as the twisted pair cable.
PICMG PCI Industrial Computer Manufacturing Group
A non-profit industry trade group that issues and maintains technical standards to
manufacturers of embedded and industrial computer boards and systems.
SATA Serial AT Attachment
A high-speed serial-interconnect standard for hard disks. SATA is electrically quite
Page 14 of 103 COM Express Carrier Type 2
Design Guide