12
Interfaces
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.
3.3
Camera CSI
The LEC-BTS brings out signals for two MIPI-CSI 2.0 (serial) camera interfaces, the first with
clock and one data lane, the second with clock and up to four data lanes supporting up to 800
Mbit/s of actual pixels.
3.4
Audio (HDA)
The SoC provides an HDA controller, which communicates with internal or external CODECs
over the Intel HDA serial link. HDA signals are brought out through the I2S2 pins on the SMARC
connector and are multiplexed with LPE_I2S audio signals. When HDA is active, LPE audio is
disabled.
3.5
PCI Express (PCIe)
The CPU features four PCIe x1 ports, and the LEC-BTS module uses three of them for the PCIe
interface and one of them for the Gigabit Ethernet interface. The PCIe interface supports the
PCIe Base Specification 2.0 with a maximum signal rate of 5 GT/s and can be configured to sup-
port PCIe edge cards or Express Cards.
3.6
Gigabit Ethernet
The on-board Intel I210IT Ethernet controller uses PCIe x1 (v2.1) bus signals from the CPU to
enable 10T/100TX/1000T operation through integrated MAC, PHY, and SGMII/SerDes inter-
faces.
3.7
USB Ports
The USB interface originates from two host controllers on the SoC that provide four USB 2.0
ports and one USB 3.0 port.
3.7.1
USB2.0
Three of the four USB 2.0 ports use the USB 0-2 pins on the SMARC connector. The fourth USB
2.0 port is routed through the AFB-DIFF2 pins on the SMARC connector, which map to the
USB_DP/N [0] pins on the SoC.
3.7.2
USB 3.0
The USB 3.0 port uses the AFB_DIFF 0-1 pins on the SMARC connector, which map to the
USB3_TX/RX pins on the SoC. See Table 3-2.
3.8
SATA
The SATA interface provides one port through the SATA0 pins on the SMARC connector. The
interface supports 1.5Gb/s and 3.0Gb/s. The LEC-BTS supports a second SATA port through
the AFB Diff 3 and AFB Diff 4 signals on the SMARC connector (pins S71-S72 and S74-S75.)
