TMS320F28386S: Register in TMS320F28379D does not exist in the 386S

Ed,

            Both TMS320F28379D and TMS320F28386S devices have LS0-LS5 RAM banks and hence the DC18 register. I confirmed that the respective device TRMs do mention this register.

Ed Sanders said:

In the initialization of the 379D, we use the DC18 register, among others, to initialize the LSRAM.

This is a read-only register. Not sure exactly how you use it in your application.

Ed Sanders said:

Those registers no longer exist, and I can’t find a replacement for them in the DEV_CFG_REGS. 

I checked the F2837xS_sysctrl.h file in C:\ti\c2000\C2000Ware_5_00_00_00\device_support\f2837xs\headers\include and it correctly includes the DC18.

Ed Sanders said:

Is there an equivalent register somewhere else, or is it simply no longer needed?

There is no equivalent register somewhere else. If you indeed used that register for some purpose in 379D, you need to use it in 386S as well.

Ed,

            I am extremely sorry. I was looking at the wrong device. I looked at TMS320F28376S, not the TMS320F28386S. The DCx registers were originally conceived to be for TI internal use. Hence they were removed from the documentation for TMS320F28386S device (and the C2000ware header files).