Hi everyone.
for 6678EVM,the interface of PUMBus is like this
for USB-TO-GPIO adapter ,the interface will be like this
How to connect computer and 6678EVM PMBus interface?How to configure the UCD9222 on 6678EVM
You will need to make an interface cable to go between the 10-pin header on the USB Interface Adapter's ribbon cable to pins 2 through 6 on the 6678EVM header, do not connect the 3.3V pin on the ribbon cable to the VCC3V3_AUX pin (pin 1) on the 6678EVM. The USB adapter schematic should have all the PMBus lines labeled to determine required connections but if it does not then Table 2-1 in the USB Interface Adapter Evaluation Module User's Guide contains the pin out for the 10 pin header.
The USB Interface Adapter Evaluation Module User's Guide can be found here: http://www.ti.com/lit/ml/sllu093/sllu093.pdf
The UCD9222 should already have a configuration for driving the C6678EVM pre-loaded during its manufacture.
Hi brad
there is a UCD9222 in my project. the 10 pins Header for PMBus on my board should be male or female?
If you want to attach the ribbon cable from the USB-to-GPIO adapter to your baord then the header on your board needs to be male.