Digilent 410-280P-KIT - Manual (Page 3)

chipKIT DP32
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5. JP1 – USBID Jumper for use with USB OTG
This jumper allows Digital I/O pin 0 (RB5) to be disconnected from the USBID line on the USB
Port. If JP1 is shorted, pin 0 may not operate as expected. Some users may wish to keep JP1
shorted for USB operations.
6. JP2 and JP3 – D+ and D- USB Signals
These jumpers are shipped unloaded. The trace between the two terminals may be cut if USB
functionality is required to be permanently disabled. Once the traces have been cut, it is
possible to solder jumper pins in these locations to re-enable the D+ and D- signals as
desired.
7. IC4 – SPI EEPROM Device (Microchip 25LC256) Loading Point
This 8-pin DIP footprint is designed so that a SPI controlled EEPROM device could be added
at a later time if desired. It is intended that an 8-pin DIP socket or a Microchip 25LC256 device
would be soldered into this location.
8. VR1 – Analog Potentiometer
An analog potentiometer connected to chipKIT analog pin A2. When rotated fully counter
clockwise, 0V is read on the pin. When rotated fully clockwise, 3.3V is read on the pin.
9. User LEDs
Four LEDs connected to digital signal pins 11, 12, 13, and 14.
10. Reset Button
When pressed, the microcontroller resets the currently loaded sketch. If Button 2 (BTN2/PGM)
is held down while pressing the reset button, the microcontroller will start from the boot loader,
allowing a new sketch to be loaded.
11. BTN2/PGM and BTN3 User Buttons
These user buttons are connected to digital signal pins 1 and 17. They produce a logic high
signal when depressed, and a logic low signal when released.
12. JP4/JP5 – Pullup/Pulldown jumpers
These jumpers are used to add pullups or pulldowns to the digital signal pins 2 and 3. Pullups
are necessary when utilizing I
2 C on these two pins. These two jumpers can be used as
settable logic states either pulled high or pulled low depending on the jumper settings. In
addition, if no pullups or pulldowns are desired, the jumper may be safely removed completely,
allowing the pins to be used for other input/output purposes.
13. IC1 PIC32 Microcontroller
The PIC32MX250F128B microcontroller is the main processor for the board.
14. J4 – Digital and Analog I/O Connector #1
The set of Digital I/Os with chipKIT numbers 0 through 8 and Analog pins A0-A2. See table 1
in appendix A for more details.
15. IC3 – Analog Temperature Sensor (Microchip MCP9701A) Loading Point
This 3-pin footprint is intended for an analog temperature sensor to be loaded by the user. It
was designed with the Microchip MCP9701A Linear Active Thermistor in mind. The pin one