Datasheet

chipKIT™ Pro MX7 Board Reference Manual
Copyright Digilent, Inc. All rights reserved.
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Page 24 of 35
This connector is used to connect the on-board programming and debug circuit to the PC for use with the
MPLAB IDE.
J17
External Power Connector
This is a 2.5mm x 5.5mm, center positive, coax power connector used to provide external power to the board.
The optional Digilent 5V Switching Power Supply is connected here.
J18
External Power Connector
This is a screw terminal connector used to provide external power to the board. Be sure to observe proper
polarity (marked near the connector) when providing power via this connector, or damage to the board
and/or connected devices may result.
J19
USB Device / OTG Connector
This is a USB micro-AB connector. It is used when using the PIC32MX795 microcontroller to implement a USB
device or OTG Host/Device.
J20
USB Host Connector
This is a standard sized USB type A connector. This connector is used to connect USB devices to the board
when using the PIC32MX795 microcontroller to implement an embedded USB host.
JP1 &
JP2
CAN or Pmod Select
These jumpers select microcontroller signals RF12 and RF13 for use with CAN #1 or Pmod connector JF. Place
these jumpers in the CAN position to use CAN #1. Place the jumpers in the PMOD position to use then with
Pmod connector JF.
JP3 &
JP4
Pull-up enable for I2C1
These two jumpers are used to enable/disable the pull-up resistors on I2C1. Insert shorting blocks on these
two jumpers to enable the pull-up resistors. Remove the shorting blocks to disable the pull-up resistors. Only
a single device on the I
2
C bus should have the pull-up resistors enabled.
JP5
CAN #1 Termination
This jumper is used to enable/disable the 120 ohm termination resistor for CAN #1. Insert the shorting block
to enable the termination resistor, remove it to disable the termination resistor.
JP6
CAN #1 5V0 Enable
This jumper is used to enable/disable providing 5V to the CAN #1 connector. Insert the shorting block to
connect the board 5V0 supply to pins 9 & 10 of CAN #1 connector. Remove the shorting block to disconnect
the 5V0 supply.
JP7
CAN #2 Termination
This jumper is used to enable/disable the 120 ohm termination resistor for CAN #2. Insert the shorting block
to enable the termination resistor, remove it to disable the termination resistor.
JP8
CAN #1 5V0 Enable
This jumper is used to enable/disable providing 5V to the CAN #1 connector. Insert the shorting block to
connect the board 5V0 supply to pins 9 & 10 of CAN #1 connector. Remove the shorting block to disconnect
the 5V0 supply.
JP9
Do Not Use.
JP10
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 "MICRO" position to supply power to the USB micro-AB OTG Connector, J19. Place the shorting
block in the "A" position to supply power to the USB type A Host Connector, J20.