Digilent 410-173-KIT - Manual (Page 15)

Cerebot 32MX4 Reference Manual
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Place a shorting block in the middle, DAC, position to connect the output of the MCP4725
digital to analog converter to pin 20. This allows the use of the DAC output as an input to
analog comparator #1.
Place a shorting block in the lower, JJ, position to connect pin 20 to Pmod connector JJ, pin
8. This allows access to pin 20 from this Pmod connector.
JP1 Connect VS bus to VU bus
This jumper is used to connect the VS bus to the VU bus. The VS bus provides power to the
servo connectors, S1-S8. The VU bus is the main board power bus. Install a shorting block
on this jumper to have the servo power bus powered from the main power bus. Remove the
shorting block from this jumper to separate the two power busses. When using a separate
servo power bus, the VS bus is powered from screw terminal connector J5.
JP2 VS bus voltage monitor
This jumper is used to enable monitoring of the VS bus voltage. When a shorting block is
installed on this jumper, the VS bus is connected via a voltage divider to analog input AN9.
This can be used, for example, to monitor the state of a battery supply being used to power
servos.
JP4 VU bus voltage monitor
This jumper is used to enable monitoring of the VU bus voltage. When a shorting block is
installed on this jumper, the VU bus is connected via a voltage divider to analog input AN8.
This can be used, for example, to monitor the state of a battery supply being used to power
the board.
JP5 USB over-current detect
This jumper is used to enable monitoring of the over-current detect capability of the USB bus
power switch, IC6. When a shorting block is installed on this jumper, the over-current output
pin of IC6 is connected to the INT2/RE9 pin of the PIC32MX460 microcontroller.
JP6 USB host power select
This jumper is used to select which host connector is powered when host power is enabled.
Place the shorting block in the “OTG” position to supply power to the USB OTG Connector,
J15. Place the shorting block in the “HOST” position to supply power to the USB Host
Connector, J17.
S1-S8 Servo connectors
These provide connection for up to 8 RC hobby servos. Each of these connectors provides a
control signal: labeled S; servo power: labeled VS, and a ground connection: labeled G. The
signal pins on these connectors are shared with the signal pins on Pmod connector JC.
JPA –
JPF &
JPH-
JPK Pmod header power select
Any of the Pmod headers can be connected to use either regulated or unregulated power. To
use regulated power, place the jumper block over the center pin and the pin marked VCC. To
use unregulated power, place the jumper block over the center pin and the pin marked VU.