User manual

AM335xStarterKitHardwareUsersGuide
10
For optimal throughput we recomend using an external Antenna as describe in the link:<ECO for using external
antenna>
[2]
Warning: To minimize risks of potential radiation hazards associated with handling and/or moving the
energized EVM including compliance with the wireless radio grant licensing provisions, always maintain a
minimum distance of 20cm measured between EVM user(s) and the EVM antenna.
User LEDs
The Four User LEDs implemented are D1-D4 in the user panel area. These are driven by the GPIOs from the
AM335x.
All the user LEDs are green in color.
User Keys
This design has 4 user keys SW1,SW2,SW3 & SW4, three of them connected directly to the GPIO bank2 of the
processor (Keys 2,3 & 4) and one of them (Key 1) connected to the GPIO bank0 of the processor.
Apart from the above four user keys, the design also has a button to interrupt the processor via the non maskable
interrupt pin.
Accelerometer
The LIS331DLH is an ultra low-power high performance three axes linear accelerometer used in TMDSSK3358
board. The accelerometer is mounted closer to the center of the board as to allow the most useful/dynamic data. The
accelerometer is connected via I2C0 of the processor. The I2C(0) address is 0011000b.
Pin Use Description
The Pin use description file provides us the information on the pin functionality mode selected. The pin mux utility
file is found here Pin Mux Data File
[3]
GPIO Definitions
See the updated pinmux document Pin Mux Description
[4]
which shows the use case columns for GPIOs.
Board Expansion Connectors
The SPI0 and the I2C0 ports are extended through the connectors J11 and J8 respectively. SPI0 Expansion header
pinout is provided below.