Certain settings on the device control card are needed to communicate over JTAG and use the isolated UART port. The settings also provide a correct ADC reference voltage. The following are the settings required on revision 1.1 of the F28379D control card.
See also the information sheet located inside
C2000Ware at
<sdk_install_path>\c2000ware\boards\controlCARDs\TMDSCNCD28379D:
- A:SW1 on the control card must be set on both
ends to ON (up) position to enable the JTAG connection to the device and the
UART connection for SFRA GUI. If this switch is OFF (down), the built-in,
isolated JTAG on the control card cannot be used and the SFRA GUI cannot
communicate to the device.
- A:J1 is the connector for the USB cable that is
used to communicate to the device from a host PC on which the Code Composer
Studio (CCS) runs. Use a USB isolator to connect to the laptop, as previously
discussed.
- A 3.3-V reference is desired for the control loop
tuning on this design; therefore, set the appropriate jumpers to provide a 3.3-V
reference externally to the on-chip ADC. For version 1.3 of the F28379D control
card, this means SW3 and SW2 are moved to the end with "." that is, to the left
as defined, which puts 3.3-V VDDA as the reference for the ADC. See the information sheet for more information.
- On jumper connector J3, connect together pin 2
and pin 3 by using a jumper.