Make sure that the selected power supply between the V-USB and EXT VDD and the
board jumper configuration are combined, as shown in the image below.
Header
INPUT SUPPLY = VUSD
INPUT SUPPLY = EXTVDD
J2 PIN 1-2
Short
Open
J2 PIN 2-3
Open
Short
J4 PIN 3-4
Short
Open
Power Supply Selection
USB Powered Bridge and Target
External Supply Powered Bridge and Target
When powering the MTB from a USB source, insert JS1 between J2 header
Pin1-2 and insert JS2 between J4 header Pin 3-4
When powering the MTB from an external source (with a supply voltage
of 1.8-5V), feed to J4 Pin:3 and supply GND to Pin:19. Do not place
jumper JS2.
USB Supply to Bridge and Target Board
External Supply to Bridge and Target
Board
USB Supply to Bridge and External Supply to Target
Board
Jumper J2
Short PIN 1-2
Short PIN 2-3
Short PIN 1-2
Jumper J4
Short PIN 3-4
Open PIN 3-4
Open PIN 3-4
EXTVDD
-
EXTVDD to J4 Pin 3 and GND Pin 19
EXTVDD to J4 Pin 3 and GND Pin 19
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
