VIA SOM-6X80 User Manual
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A.4. SOMDB3 External I/O
The SOMDB3 carrier board has a wide selection of interfaces. It includes a selection of frequently used ports as
part of the external I/O coastline.
A.4.1. HDMI
®
Port
The SOMDB3 carrier board has an HDMI port on the left panel. The HDMI port uses a Type A receptacle
connector to connect high definition video and digital audio using a single cable. The pinouts of the HDMI port
are shown below.
Table 22: HDMI port pinouts
A.4.2. Micro USB 2.0 OTG Port
The SOMDB3 carrier board is equipped with a Micro USB 2.0 OTG port on the right panel which gives complete
Plug and Play and hot swap capability for external devices. The USB interface complies with USB Universal
Host Controller Interface (UHCI) Rev. 2.0 with OTG functionality. The pinouts of the Micro USB 2.0 OTG port are
shown below.
Table 23: Micro USB 2.0 OTG port pinouts
Pin
Signal
Pin
Signal
1
2 GND
3 HDMID2-
4
5 GND
6 HDMID1-
7
8 GND
9 HDMID0-
10
11 GND
12 HDMICLK-
13 HDMI_CECIN 14 NC
15 HDMIDDCSCL 16 HDMIDDCSDA
17 GND
18 5V_HDMI
19 HDMIHPD
Pin
Signal
1
USB_VBUS
2
USBD0-
3
USBD0+
4
USBID0
5
GND
Figure 40: HDMI port diagram
Figure 41: Micro USB 2.0 OTG port diagram