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VIA SOM-6X80 User Manual
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A.4.5. Micro SD Card Slot
The SOMDB3 carrier board comes with a Micro SD card slot located on the back panel with support for a
maximum storage capacity of 32GB. The pinouts of the Micro SD card slot are shown below.
Table 26: Micro SD card slot pinouts
A.4.6. USB 2.0 Ports
The SOMDB3 carrier board is equipped with two USB 2.0 ports located on the right panel. Each USB 2.0 port
offers 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. The pinouts of the USB 2.0 ports are shown below.
Table 27: USB 2.0 ports pinouts
Pin
Signal
1
SD0DATA2
2
SD0DATA3
3
SD0CMD
4
VCC33
5
SD0CLK
6
GND
7
SD0DATA0
8
SD0DATA1
9
SD0CD
Figure 45: USB 2.0 port diagram
Figure 44: Micro SD card slot diagram
USB 2.0 Port 1 (J2)
Pin
Signal
1
VBUS01
2
USBHA-
3
USBHA+
4
GND
USB 2.0 Port 2 (J4)
Pin
Signal
1
VBUS01
2
USBHB-
3
USBHB+
4
GND