Toradex Apalis Series - Page 8

Apalis Carrier Board Design Guide
Toradex AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l info@toradex.com
Page | 8
Abbreviation
Explanation
I
2
S
Integrated Interchip Sound, serial bus for connecting PCM audio data between two devices
IrDA
Infrared Data Association, infrared interface for connecting peripherals
JTAG
Joint Test Action Group, widely used debug interface
LCD
Liquid Crystal Display
LSB
Least Significant Bit
LVDS
Low-Voltage Differential Signaling, electrical interface standard that can transport very high-speed signals
over twisted-pair cables. Many interfaces like PCIe or SATA use this interface. Since the first successful
application was the Flat Panel Display Link, LVDS became a synonymous for this interface. In this
document, the term LVDS is used for the FPD-Link interface.
MIPI
Mobile Industry Processor Interface Alliance
MDI
Medium Dependent Interface, physical interface between Ethernet PHY and cable connector
MDIX
Medium Dependent Interface Crossed, an MDI interface with crossed RX and TX interfaces
mini PCIe
PCI Express Mini Card, card form factor for internal peripherals. The interface features PCIe and USB 2.0
connectivity
MMC
MultiMediaCard, flash memory card
MSB
Most Significant Bit
mSATA
Mini-SATA, a standardized form factor for small solid state drive, similar dimensions as mini PCIe
MXM3
Mobile PCI Express Module (second generation), graphic card standard for mobile device, the Apalis form
factor uses the physical connector but not the pin-out and the PCB dimensions of the MXM3 standard.
N/A
Not Available
N/C
Not Connected
OD
Open Drain
OTG
USB On-The-Go, a USB host interface that can also act as USB client when connected to another host
interface
OWR
One Wire (1-Wire), low-speed interface which needs just one data wire plus ground
PCB
Printed Circuit Board
PCI
Peripheral Component Interconnect, parallel computer expansion bus for connecting peripherals
PCIe
PCI Express, high-speed serial computer expansion bus, replaces the PCI bus
PCM
Pulse-Code Modulation, digitally representation of analogue signals, standard interface for digital audio
PD
Pull-Down Resistor
PHY
Physical Layer of the OSI model
PMIC
Power Management IC, integrated circuit that manages amongst others the power sequence of a system
PU
Pull-up Resistor
PWM
Pulse-Width Modulation
RGB
Red Green Blue, color channels in common display interfaces
RJ45
Registered Jack, common name for the 8P8C modular connector that is used for Ethernet wiring
RS232
Single ended serial port interface
RS422
Differential signaling serial port interface, full duplex
RS485
Differential signaling serial port interface, half duplex, multi drop configuration possible
R-UIM
Removable User Identity Module, identifications card for CDMA phones and networks, an extension of the
GSM SIM card
S/PDIF
Sony/Philips Digital Interconnect Format, optical or coaxial interface for audio signals
SATA
Serial ATA, high-speed differential signaling interface for hard drives and SSD
SD
Secure Digital, flash memory card
SDIO
Secure Digital Input Output, an external bus for peripherals that uses the SD interface
SIM
Subscriber Identification Module, identification card for GSM phones
SMBus
System Management Bus (SMB), two wire bus based on the I
2
C specifications, used specially in x86
design for system management.
SoC
System on a Chip, IC which integrates the main component of a computer on a single chip
SPI
Serial Peripheral Interface Bus, synchronous four wire full duplex bus for peripherals
TIM
Thermal Interface Material, thermal conductive material between CPU and heat spreader or heat sink
TMDS
Transition-Minimized Differential Signaling, serial high-speed transmitting technology that is used by DVI
and HDMI
TVS Diode
Transient-Voltage-Suppression Diode, diode that is used to protect interfaces against voltage spikes