User manual

RSK+RX62N 5. User Circuitry
REJ10J2198-0201 Rev. 2.01 Page 17 of 54
Nov 30, 2011
5.4 LEDs
There are ten LEDs on the RSK board. The function of each LED, its colour, and its connections are shown in
Table 5-3.
LED Colour Function MCU Connection
3V3_PWR Green Indicates the status of the 3.3V power rail. No connection
5V_PWR Green Indicates the status of the 5V power rail. No connection
LED0 Green User operated LED. P02, Pin B1
LED1 Orange User operated LED. P03, Pin C2
LED2 Red User operated LED. P05, Pin C3
LED3 Red User operated LED. P34, Pin J4
LED4 Green Ethernet speed status LED. No connection
LED5 Green Ethernet duplex status LED. No connection
Built into
Ethernet con.
Green Ethernet link status LED. No connection
Built into
Ethernet con.
Yellow Ethernet activity status LED. No connection
Table 5-3: LED Connections
5.5 Potentiometer
A single-turn potentiometer is connected as a potential divider to analogue input AN0, C5. The potentiometer can
be used to create a voltage between AVCC and ground (by default, AVCC is connected to the board 5V supply).
The potentiometer is fitted to offer an easy method of supplying a variable analogue input to the microcontroller. It does
not necessarily reflect the accuracy of the controller’s ADC. Refer to the device hardware manual for further details.
5.6 Debug LCD Module
A debug LCD module is supplied with the RSK, and should be connected to the LCD header, LCD1.
Care should be taken when installing the LCD module to ensure pins are not bent or damaged. The LCD module is
vulnerable to electrostatic discharge (ESD); therefore appropriate ESD protection should be used.
The debug LCD module uses a 4-bit interface to reduce pin allocation. No contrast control is provided, as this is set
by a resistor supplied on the display module. Connection information for the debug LCD is provided in Table 5-4,
overleaf. Connection information for the debug LCD module is provided in Table 5-4 below.
Debug LCD Header
Pin Circuit Net Name MCU Pin Pin Circuit Net Name MCU Pin
1 Ground - 2 Board_5V -
3 No Connection - 4 DLCDRS P84, Pin R9
5 R/W (Pulled to ground) - 6 DLCDE (pulled to ground) P85, Pin P9
7 No Connection - 8 No Connection -
9 No Connection - 10 No Connection -
11 DLCDD4 P94, Pin C8 12 DLCDD5 P95, Pin D8
13 DLCDD6 P96, Pin B8 14 DLCDD7 P97, Pin B9
Table 5-4: LCD Header Connections