3.11 USB(J7,J9)
The SBC-SAM9G20 Single Board Computer is shipped with 2 USB host port(J7) on
standard USB type-A double deck connector.
The SBC-SAM9G20 Single Board Computer is shipped with one USB device port J9.
The USB device port signal assignment is listed in the following table.
Table J7(
USB Host)
Pin Signal Name Function
1
VDD5V
Power supply (+5V)
2
D+
USB1 signal
3
D-
USB1 signal
4
GND
Power supply (GND)
5
VDD5V
Power supply (+5V)
6
D+
USB1 signal
7
D-
USB1 signal
8
GND
Power supply (GND)
Table J9(
USB device )
Pin Signal Name Function
1
VBUS
Power supply (+5V)
2
D+
USB signal
3
D-
USB signal
4
GND
Power supply (GND)
3.12 SD Card
SD ( Security Digital ) card is a kind of widely applied card. A specified interface
circuit on platform supports reading and writing function of SD card. AT91SAM9G20
integrates SD module in itself.
3.13 Character LCD interface
We can use the GPIO interface to extended LCD interface, it support resolution:
320*240.
More interface info, refer to the
3.14 GPIO(J10)
3.14 SPI, GPIO, ADC(J3, J10, J13)
The AT91SAM9G20 contains very rich set of peripherals that are multiplex into 2
groups, Peripheral A and Peripheral B, with individually programmable pins. The SPI
bus, A/D and GPIO are provided together with other functions on the I/O expansion
port. The I/O expansion port is a 2x10 2.54mm spacing header. The following table
lists signals available on the I/O expansion connector with their corresponding
SBC-SAM9G20 User manual
www.armdevs.com
