Toradex Verdin - Page 8

Verdin Carrier Board Design Guide
Preliminary – Subject to Change
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Abbreviation
Explanation
GND
Ground
GPI
General Purpose Input
GPIO
General Purpose Input/Output, pin that can be configured being an input or output
GPO
General Purpose Output
GSM
Global System for Mobile Communications
HDA
High Definition Audio (HD Audio), digital audio interface between CPU and audio codec
HDCP
High-Bandwidth Digital content Protection, copy protection system that is used by HDMI beside others
HDMI
High-Definition Multimedia Interface, combines audio and video signal for connecting monitors, TV sets or
Projectors, electrical compatible with DVI-D
I
2
C
Inter-Integrated Circuit, two-wire interface for connecting low-speed peripherals
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 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.
MAC
Medium Access Control, is part of the second layer (data link layer) in the Ethernet stack
MII
Media-Independent Interface, interface between Ethernet MAC and PHY for up to 100Mb/s
MIPI
Mobile Industry Processor Interface Alliance
MDI
Medium Dependent Interface, physical interface between Ethernet PHY and cable connector
MDIO
Management Data Input/Output, an interface that is used for controlling the Ethernet PHY. The bus
consists of the MDC clock and the MDIO bidirectional data signal.
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 analog 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
QSPI
Quad SPI, SPI interface with four bidirectional data signals
RGB
Red Green Blue, color channels in common display interfaces
RGMII
Reduced Gigabit Media-Independent Interface, interface between Ethernet MAC and PHY for up to 1Gb/s
RJ45
Registered Jack, common name for the 8P8C modular connector that is used for Ethernet wiring
RMII
Reduced Media-Independent Interface, interface between Ethernet MAC and PHY for up to 100Mb/s