Each of the device two DSP subsystems - DSP1 and DSP2 is composed of a DSP C66x CorePac coupled with several other submodules that enable its integration in the device architecture. Device DSP subsystem provides :
- a 128-bit master data port (MDMA) on device L3_MAIN with a dedicated DSP subsystem local MMU (MMU0) on the path.
- a 32-bit master configuration port (CFG) on device L3_MAIN through which DSP host configures various device located peripherals (external to the DSP subsystem).
- a 128-bit slave DMA port (SDMA) on device L3_MAIN which allows external initiators (masters) to DSP to manipulate some portion of its config / status registers (those which are mapped in the L3_MAIN space) in the device
- a 128-bit master EDMA port - which allows the DSP_EDMA traffic controllers to initiate transfers on L3_MAIN.
The C66x DSP subsystem is illustrated in the Figure 5-1.