arm v7AR debug architecture DCC register access

Dear sirs, The ARM v7ar manual says that DCC data registers DBGDTRTX and DBGDTRRX have RW attributes from external view. It confuses me why DBGDTRTX can be written from external debugger. what is the...
arm v7AR debug architecture DCC register access

Dear sirs, The ARM v7ar manual says that DCC data registers DBGDTRTX and DBGDTRRX have RW attributes from external view. It confuses me why DBGDTRTX can be written from external debugger. what is the...
Port pins too slow

Hi.. I have a problem with the xc167ci. Its I/O-Pins toggle too slowly. If I have e.g. pin 4^0 toggeling, it only works with 2,85 MHz instead of 40 MHz (system clock). I use the following sourcecode...
Port pins too slow

Hi.. I have a problem with the xc167ci. Its I/O-Pins toggle too slowly. If I have e.g. pin 4^0 toggeling, it only works with 2,85 MHz instead of 40 MHz (system clock). I use the following sourcecode...
SPI communication is too slow.

Hi, I have written code for communication between C8051F120 and C8051F350 using SPI. C8051F120 is running at 100 MHz and C8051F350 running at 50 MHz - which is maximum possible for both. SPI clock...