TMS320F28377S: 7segment-LED control circuit

Can you please specify your question? What is LED control circuit A and B stand for?

Thank you.

I revise question contents.

By using TMS320F28377Ss and ICM7228(or ICM7218), I want to design the circuit that control 7segment-LED.
Please tell me the circuit to connect TMS320F28377Ss and ICM7228(or ICM7218) to,  when using GPIO, and when using the Line Decoder like a SN74LS138.

Best Regards, Okada

Hi Naoki, 

Please study the material provided in this excellent training material: https://training.ti.com/c2000-f2837xd-microcontroller-workshop?context=1137755-1139641-1137781 

If you have not looked at C2000Ware yet, you can download it here:  http://www.ti.com/tool/C2000WARE?keyMatch=C2000WARE%20DOWNLOAD&tisearch=Search-EN-everything  

Let us know if this helps you and if you have any further questions. 

Cheers!

Krishna