ADLINK Technology LEC-BT, Technical Reference

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10 Interfaces
3 Interfaces
This section provides descriptions of the interfaces and signals within the SMARC P-S (Pri-
mary-Secondary) connector.
Refer to the SMARC specification at:
http://www.sget.org/standards/smarc.html for definitions of the SMARC interfaces. The SMARC
P-S (Primary-Secondary) connector provides the following interfaces:

LVDS
 HDMI

Camera CSIO
 Audio

PCIe
 Gb Ethernet

USB 2.0
 USB 3.0

SATA
 I2C

SPI
 Serial

I2S
 SD/SDIO

eMMC
 GPIO

AFB
 Debug
3.1 18/24 Bit LVDS LCD
The LVDS interface is connected to the DDI0 interface of the SoC, while the translation is made
by a DisplayPort™-to-LVDS converter. (Refer to the Realtek RTD2136R-CG, Display-
Port-to-LVDS converter data sheet.)
3.2 HDMI (High-Definition Multimedia Interface)
The default setup defines the DDI1 port as HDMI and provides the following signals:

1 Clock pair
 3 Data pairs

Service signals
The HDMI interface is compliant with the HDMI 1.4 specification.
NOTE: ADLINK Technology Inc. only supports the features/options tested and listed in this
manual. The main chips used in the LEC-BT may provide more features or options than are
listed for the LEC-BT, but some of these features or options are not supported on the module
and will not function as specified in the chip documentation.
NOTE: Backlight Enable, Display Enable, and PWMOUT are controlled from the BIOS setup.