User`s manual

6.2.Debug LCD Module

A debug LCD module is supplied on the RDK. The debug LCD module uses an SPI interface to reduce the pin allocation.

Software contrast control is also provided. The module supplied with the RDK uses 3.3v. The display is a 96 x 64

graphics display and uses a white LED backlight. Note there is a footprint, LCD1, for a 2 x 8 character display. This

display is not populated – but can be used in a standard 4 bit nibble configuration if desired.

Table 6-2 shows the pin allocation and signal names used for the graphics LCD connector.

J11

Pin Circuit Net Name Device

1 +5V Backlight Positive Anode - 2 GND -

3 GND - 4

GND

5 GND - 6

LCD-CS

7 RSTOUT# (Inverted RESET_IO Pin 49) 49 inv 8 LCD-RS 43

9 +3.3V - 10 +3.3V -

SCK

MOSI

+3.3V

- 16

+3.3V

- 18

+3.3V

GND

- 20

+3.3V

Table 6-2: Debug LCD Module Connections

6.3. LEDs

There are 17 LEDs on the RDK board. The green ‘POWER’ LED (LED3) lights when the board is powered. The Segger

J-Link Lite Debugger Interface has an LED (LED16) that illuminates when the Debugger USB Interface is connected to a

host PC. There are12 user LEDs (see table 6-3) that are connected to IO ports and will light when their corresponding

port pin is set low. The 12 user LEDs are arranged to show the winding phases of a motor control circuit. The remaining

2 LED’s (LED2 and LED1) are Ethernet specific, and are not accessed directly from the MCU.