Experimentation Software; Special Notes; Xds110 Emulator And Sci (Uart) Connectivity; Clocking Methodology - Texas Instruments controlCARD TMDSCNCD2800137 User Manual

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4.5 Experimentation Software

Code Composer Studio (CCS) Integrated Development Environment (IDE)
and debugging software for the C2000 series of MCUs. The CCS IDE is free to download and use with the
controlCARD. Introductory videos for CCS are available at training.ti.com.
C2000Ware contains a full suite of example software designed to work with the F280013x controlCARD.
This software package includes many example projects that allow the user to experiment with the ADC, PWM,
and other C2000 peripherals.
Support files for both register-level and driver-level programming are included with C2000Ware:
• Register header files are located at: \ti\c2000\C2000Ware_XXXX\device_support\F280013x\examples
• Driverlib programming examples are located at: \ti\c2000\C2000Ware_XXXX\driverlib\F280013x\examples
For users new to C2000's F280013x series of devices and CCS, TI's
follow training modules and hands-on lab exercises to help users get started quickly.

5 Special Notes

5.1 XDS110 Emulator and SCI (UART) Connectivity

The F2800137 controlCARD provides emulation and USB-to-UART adapter functionality on the controlCARD.
This allows for a convenient method to debug and demonstrate the F280013x MCU.
Note that the MSP432 chip, its support circuitry, and associated components are placed in Macro A (the left
section of the controlCARD). Each of these components contains an additional ":A" within the component
reference designator (that is, R2:A for resistor 2 in Macro A) (see
The configuration of the switches on S1:A determine if either the on-board emulator or an external emulator is
connected to the MCU, and if the SCI (UART) pins on the MCU are connected to the COM port on the USB-C
connector (see Table 4-1).

5.2 Clocking Methodology

This controlCARD is required to support a broad range of TI's baseboards. Several designs rely on GPIO18
and GPIO 19 for EPWM6 , while others require these GPIO to be utilized as a precision clock input source. To
accommodate both of these systems a switch (S2) has been added to the design. This methodology should not
be used in a final system as it increases EMI emissions and creates robustness susceptibilities. It is up to the
system designer to choose the best way to implement the clocking circuity for a given system.

5.3 Evaluation of the Analog-to-Digital Converters (ADCs)

When using the F2800137 on-chip ADCs there are some useful guideline to follow to realize the performance
numbers listed in the device-specific data sheet. This is especially true for the AC parameters such as: SNR,
THD, and SINAD. Furthermore, it can also be shown that there is a direct correlation between the SNR of the
ADC result and the spread of ADC codes seen for a DC input; as such, the tips improve the range and standard
deviation of a DC input as well. Finally, while topics addressed are with respect to the controlCARD, the topics
are applicable to other implementations using the F2800137 MCU as well.
On-board resistors and capacitors: By default all inline resistors to the ADC pins are a simple 0-Ω shunt and
all capacitors to the ground plane are not populated. While this circuit can be used to supply the ADC inputs
with a voltage, likely both the resistor (R) and capacitor (C) are to be populated based on the voltage source's
characteristics. Referring to the ADC Input Model, the ADC input has its own RC network made up of the internal
sample and hold capacitor, switch resistance, and parasitic capacitance. By changing the inline resistance and
parallel capacitor, you can optimize the input circuit to assist with settling time and/or filtering the input signal.
Finally, it is recommended in general to use Negative-Positive 0 PPM/°C (NP0/C0G) capacitors as these have
better stability over temperature and across input frequencies than other types of capacitors.
Voltage source and drive circuitry: While the on-chip ADCs are 12-bit architecture (4096 distinct output codes
when converting an analog signal to the digital domain); the translation is only as precise as the input provided to
the ADC. The typical rule of thumb when defining the source resolution to realize the full specification of an ADC
is to have a 1-bit better source than the converter. In this case, that means that ideally the analog input can be
accurate to 13-bits.
SPRUJ15B – NOVEMBER 2021 – REVISED OCTOBER 2022
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Getting Familiar with the controlCARD
is recommended for developing
C2000 Academy provides serveral easy-to-
Figure 6-1 and Figure 6-2).
TMDSCNCD2800137 controlCARD Information Guide 7