I just purchase the SSM2604 EVKit. I would like to know If i want to bypass the USB MCU on the board (the TI USB MCU).
Shall I simply plug out the JP1 or any other modification shall be done?
Thanks in advance.
Please consult the User Guide for the SSM2604 eval board:
In order to bypass the onboard MCU, please remove R20, R21, R31, and R32. Normally, I would recommend that you apply your I2C control lines to TP25 and TP26, for SCLK and SDIN respectively and connect a ground reference as close as possible, however it appears that TP25 and TP26 did not make it onto the board. I hope that you have facility to solder small wires onto some of the open pads from the vacated resistors. Please note that there are 4k7 pullups on the eval board and that the DVDD voltage is 3.3 V. Your control source might also have pullups, in parallel, the pullups should be no smaller (stronger) than 2k0 ohms. Also, the reference voltage of your outside control should match the 3.3 V DVDD here.
I am unfamiliar with the SSM2604 evaluation board, but I see that the SSM2604 has an I2C control interface. So, you can simply connect the SDA and SCL (I2C data and clock lines) from the MCU to the proper pins on the SSM2604 and you should be able to communicate with it.
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