Texas Instruments C2000 LAUNCHXL-F280049C, Руководство пользователя

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Hardware Description
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10 SPRUII7 – June 2018
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C2000™ Piccolo™ F28004x Series LaunchPad™ Development Kit
Table 3 summarizes the available PGA signals and connections. For the full connection details, see Sheet
4 of the board schematic.
Table 3. PGA Signals and Associated Connections
BoosterPack
Site
Pin
Position
PGA Signal ADC Input Signal Note
1
J3.27 PGA1_IN ADCINB2 Populate RC filter if required
J3.28 PGA3_IN ADCINC0 Populate RC filter if required
J3.29 PGA5_IN ADCINA9 Populate RC filter if required
J1.2 PGA1/3/5_GND –
Connected to PCB GND by default. Remove R26 is
PGA_GND isolation is required
2
J7.29 (69) PGA2_IN ADCINA3 Populate RC filter if required
J5.6 (46) PGA2_OF ADCINA4 Remove R19 if PGA output filter is required
J7.27 (67) PGA4_IN ADCINC3 Populate RC filter if required
J5.5 (45) PGA4_OF ADCINB4 Remove R22 if PGA output filter is required
J7.28 (68) PGA6_IN ADCINC5 Populate RC filter if required
J5.8 (48) PGA6_OF ADCINA8 Remove R25 if PGA output filter is required
J5.2 (42) PGA2/4/6_GND –
Connected to PCB GND by default. Remove R27 is
PGA_GND isolation is required
2.2 Debug Interface
2.2.1 XDS110 Debug Probe
The F28004x LaunchPad includes an on-board XDS110 Debug Probe. The XDS110 allows for the
programming and debugging of the F280049C using Code Composer Studio™ or any other supported tool
chains. In the current configuration, the XDS110 is only wired to support 2-pin cJTAG mode. This uses
only the TMS and TCK JTAG pins and allows for TDI and TDO to be reallocated for application needs.
TDI and TDO are available on GPIO35 and GPIO37. Though these pins are not routed to the debug
probe, by default, they are available at the BoosterPack connector. GPIO35 and GPIO37 can also be
routed to J101 using a combination of S3 and S4. For the proper configuration, see
Section 2.3 .
2.2.2 XDS110 Output
The connector J102 is provided to debug an external target with the on-board XDS110 debug probe. This
connector allows the LaunchPad to be used as a stand-alone XDS110 debug probe. If the LaunchPad is
being used in this manner, ensure that all of the shunts are removed from J101. This isolates the JTAG
signals from going to the F280049C MCU.
2.2.3 Virtual COM Port
When plugged into a USB host, the XDS110 enumerates as both a debugger and a virtual COM port.
J101 allows the user to connect the SCI UART from the F280049C to the debug probe to be passed on to
the USB host. By default, SCIA maps to the virtual COM port of the XDS110 using GPIO28 and GPIO29.
Alternately, GPIO35 and GPIO37 can be used for SCIA. This is accomplished by manipulating S3, S4,
and S8. For the appropriate switch settings, see the
Section 2.3 .