TDA4VL-Q1: Halt the DSP C7x

Tool/software:

Hi,

I would like to know how I can halt the DSP C7x core in a TDA4VL device. I have successfully released the core from reset which can be observed from the DBG_STAT register at address 0x91400014 via APB bus, which has value 0x20AE0000 (CPU is running). Now I would like to halt that core by writing into DBG_CNTL register (at address 0x91400010), but it seems that the CPU ignores the writes and despite writing the HALT bit, the core is still running.

Does anyone have any ideas what needs to be done to gain the debug access to DSP C7x core.

Best regards