MP6631H Communication Issue with EVKT-USBI2C-02 and Test Mode Questions

I received the EV6631H-L-00A board and purchased the EVKT-USBI2C-02 (which I believed to be a universal tool). However, I cannot establish I2C communication.

Background:

  • I previously used the MP6631H chip alone but was told it cannot communicate via I2C without additional hardware.
  • The EV6631H-L-00A board has SCL/SDA pins, so I assumed it included a dedicated I2C interface chip. Was this a misunderstanding?

Key Questions:

  1. EVKT-USBI2C-02 Compatibility
  • The MP6631H datasheet mentions using a “communication kit” to connect to a PC. Is the EVKT-USBI2C-02 the correct kit?
  • I connected the SCL/SDA pins directly but observed no monitoring. Are there specific wiring requirements or limitations?
  1. Test Mode and Register Configuration
  • The datasheet references a “test mode” for register adjustments. How do I enter this mode?
  • If I accidentally press “programming” in test mode, could this permanently disable the chip?
  1. 3-Hall Sensor Configuration
  • For 3-Hall sensor operation, must registers be modified in test mode? If so, can these changes be reversed?

Details:

  • The SCL/SDA pins on the EV6631H-L-00A are labeled but do not behave like standard I2C pins.
  • The MP6631H bench software (GUI) does not detect the board via EVKT-USBI2C-02.

Request:

  • Clarify whether the EVKT-USBI2C-02 is compatible with the EV6631H-L-00A/MP6631H.
  • Provide guidance on test mode activation and risks of accidental programming.

Hi Sefini,

Welcome to the MPS forum community!

Ideally, it should communicate with the MPS dongle. The I2C not connecting might be a GUI firmware update issue. The dongle version should be above 1.2
May I know what version GUI you are using? It can be viewed from the ‘Help’ section of the GUI when the USB is connected to the EVB.,

Also, were you able to use the EVB without the communication kit?

I will take a look at your other questions and will get back to you on this soon.

Regards,
Adhish

hi
When I connect it… the message “usb is connected” appears…
But the dongle version does not show up.


Is the dongle really supposed to be the EVKT-USBI2C-02?
Mps4
I doubt if this is correct because the dongle’s model name is not in the manual.
And the manual says to connect to CN2… but the pin map doesn’t match, so I connected SDA and SCL to CN1…
In the case of SCL, it is being output as Low from the EV6631H board… so the dongle’s SCL also gets pulled down to Low.

When I rotate the motor using only the EVB board without the communication kit… it rotates at first, then suddenly vibrates and stops.
No matter how many times I change the Hall sensors, that problem is not resolved…
And… ultimately, by using 3 Hall sensors, I want to generate maximum torque at startup (there is considerable load).

Regards,
Sefini