Connector descriptions and jumper settings – Digilent 410-173-KIT User Manual
Page 14
Cerebot 32MX4 Reference Manual
www.digilentinc.com
page 14 of 15
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
Connector Descriptions and Jumper Settings
Label
Function
J1
SPI port #1 connector
Because of multiple uses for the pins, the signals for SPI port #1 are scattered across
multiple Pmod connectors. This connector provides all of the SPI port #1 signals on a single
connector. All of the signal pins on this connector are shared with pins on various Pmod
connectors.
J2
I2C port #2 daisy chain connector
This connector provides access to the I2C signals, power and ground for I2C port #2.
J3 &
J4
Pull-up enable for I2C port #2
These two jumpers are used to enable/disable the pull-up resistors on I2C port #2. Insert
shorting blocks on these two jumpers for enable the pull-up resistors. Remove the shorting
blocks to disable the pull-up resistors. Only a single device on the I2C bus should have the
pull-up resistors enabled.
J5
Servo bus power connector
This connector is used to provide power to the servo power bus, VS.
J6
I2C port #1 daisy chain connector
This connector provides access to the I2C signals, power and ground for I2C port #1.
J10
DAC output
The analog output voltage of IC3, the MCP4725 Digital to Analog converter, is available at
this connector.
J12
Power supply source select
This jumper is used to select the source of main board power.
Place a shorting block in the upper, “USB Device Port” position to have the board powered
from the USB device connector, J15.
Place a shorting block in the center, “External Power” position to have the board powered
from one of the external power connectors, J13, J14, or J18.
Place a shorting block in the lower, “USB Debug Port” position to have the board powered
from the debug USB connector, J11.
J16
PIC32 pin 20 function select
Pin 20 on the PIC32MX460 microcontroller has multiple functions. It functions as the
VBUSON control pin when acting as a USB host. It can be used as an analog input for the
A/D converter or one of the analog comparators. It can also be used as a pin change
interrupt input or as a general digital i/o. This jumper is used to route pin 20 to one of three
places on the board:
Place a shorting block in the upper, VBUSON, position when acting as a USB host to control
the USB power supplied to the connected device.