TIDUF27A February 2025 – March 2025 AMC131M03 , MSPM0G1507
| HEADER OR HEADER OPTION NAME | TYPE | MAIN FUNCTIONALITY | VALID USE CASE | COMMENTS |
|---|---|---|---|---|
| J10, J11, J12 |
2-pin terminal blocks | Phases A, B, and C
voltages (WARNING) |
Voltage inputs for line A, B, and C | Each of these terminal blocks connect with one terminal to the Neutral voltage, while the second terminal is wired to either phase A, B, and C, respectively. |
| J13, J14, J15 |
3-pin terminal blocks | Connect shunts for
line A, B, and C (WARNING) |
Current inputs after the shunt sensors for line A, B, and C | This terminal block is a three-position terminal block but only the leftmost and rightmost positions are used. The center position, which is connected to GND, is not connected to the CT. Before performing any test, verify that this terminal block is securely connected to both output leads of the CT. |
| J1 | 2-pin header | Active energy pulses
(WARNING) |
Probe here for cumulative active energy pulses. This header has two pins: GND and ACT, which is where the active energy pulses are actually output. | This header is not isolated from AC Mains, so do not connect measuring equipment here. See the ISO_ACT pin of J2 instead, which is isolated. If testing the active power pulses is desired, use the ISO_ACT pin of J2 instead since this pin is isolated. |
| J3 | 2-pin header | Reactive energy pulses
(WARNING) |
Probe here for cumulative reactive energy pulses. This header has two pins: GND and REACT, which is where the reactive energy pulses are actually output. | This header is not isolated from AC Mains, so do not connect measuring equipment here. If testing the reactive power pulses is desired, use the ISO_REACT pin of J2 instead since this pin is isolated. |
| J102 | 10-pin, 2-row connector |
Neutral Connection (WARNING) |
Connect the XDS110 Debug Probe to this connector to program and debug the MSPM0G1106 MCU. | The XDS110 Debug Probe is used to program the MSPM0G35073 device. The MSPM0 MCU must be powered externally for programming, XDS110 also provides power. Since this header and the XDS110 are not isolated, do not connect to this header when running off Mains and Mains is not isolated. |
| J7 | 6-pin header | FTDI UART and power (WARNING) |
Use FTDI cable and UART link while debugging with no Mains connected. | Provides UART link through a PC USB port. Since this header is not isolated, do not connect to this header when running off Mains and Mains is not isolated. |
| J4, J5, J6 | 4-pin header | AMC131M03 MSPM0G3507
communication header (WARNING) |
Probe here for connections to the 4-wire SPI signals, RST signal, CLKIN signal, and DRDY signal of the respective AMC131M03 device. | The
RST pin resets the AMC131M03, driven by
MSPM0G3507 during initialization of all ADCs. The
DRDY pin of each AMC131M03 device is used
to alert the MSPM0+ MCU that new current samples are available. The
CLKIN pin is fed from the M0_CLKOUT clock output through the LMK
clock buffer of the MSPM0+ MCU to the AMC131M03 device, which
divides the clock down to produce the used modulator clock. (WARNING)This header is not isolated from AC Mains, so do not connect measuring equipment when running from Mains unless isolators external to the reference design are available. The pin mappings on this header are as follows: ? Pin 1: CS pin ? Pin 2: SPI CLK ? Pin 3: AMC131M03 CLKIN pin ? Pin 4: AMC131M03 DRDY pin |
| J17 | 8-pin header | AMC131M03 MSPM0G3507 full communication
header (WARNING) |
Probe here for connections to the 4-wire SPI signals, RST signal, CLKIN signal, and DRDY signal of the AMC131M03 device. | The Header has the same
functionality like J4, J5 and J6. The header is extended to give
access to the SPI data lines. The pin mappings on this header are as
follows: ? Pin 1: AMC131M03 DIN ? Pin 2: AMC131M03 CS ? Pin 3: AMC131M03 SCLK ? Pin 4: CLKIN ? Pin 5: AMC131M03 DRDY pin ? Pin 6: AMC131M03 DOUT ? Pin 7: AMC131M03 SYNC, RESET pin ? Pin 8: GND |
| J18 | 4-pin terminal block | MCU TDO and TDI |
||
| J2 | 2-pin header |
Reset pin |
||
| J9 | 4-pin terminal block | UART XDS to MSPM0 connection |
Debugging of the UART signal or connection for an external MCU. | If an external MCU is evaluated connect here an external MCU to send the data over the USB Type-C port. |
| J16 | 3-pin terminal block | Neutral Connection (WARNING) |
Current input after the shunt for Neutral line (if Neutral current monitoring is desired). | This terminal block is a three-position terminal block but only the leftmost and rightmost positions are used. The center position, which is connected to GND, is not connected to the shunt. Before performing any test, verify that this terminal block is securely connected to both output leads of the shunt. |
|
J19, J20, J22, J23 |
4-pin terminal block |
Power connection to
mount an external power converter (WARNING) |
Provide the board with
power over the three measured phases. Warning: High-voltage applied. |
|
|
J8 |
6-pin header |
Unused GPIO pins of the MSPM0 |
This header is used to enable further signals from the MSPM0. | Enable these GPIO header pins as desired in the SysConfig tool. |
|
J24 |
4-pin header block |
3V3 header |
Use this header for external power supply. | |
|
J25 |
4-pin header block |
GND header |
Use this header for a ground connection. | |
|
J26 |
4-pin header |
MSP432 JTAG interface |
This is a backup connection to program the MSP432 device. The default is through USB Type-C. | |
|
JP1 |
3-pin jumper header |
Pullup or pulldown through R110 = 47k? for BSL_invoke line on MSPM0G3507 |
Place a jumper at either 1-2 or 2-3 positions depending if BSL_INVOKE is VDD_3V3 or GND, respectively. | |
|
JP2 |
4-pin header block |
5V and 3V3 connections | 5V and 3V3 connections. Place this header to connect the 5V to the board. | |
|
JP5 |
3-pin header |
External 5V connection | ||
|
JP6 |
3-pin header |
External programming connection | Connection (SWDIO) of the debugger to program the MSPM0 or the Bluetooth low energy chip. | |
|
JP7 |
3-pin header |
External programming connector | Connection (SWCLK) of the debugger to program the MSPM0 or the Bluetooth low energy chip. | |
| JP8, JP9 | 3-pin header | MCU or Bluetooth low energy UART RX and TX connector | Send data from the MSP to the Bluetooth low energy chip or module over UART. |