Texas Instruments – Fixed-point DSPs designed for low active and standby power consumption needs (C5000)

Texas Instruments' C5000 fixed-point digital signal processor (DSP) generates a CPU processor core based on the TMS320C55x DSP, designed to reduce active and standby power consumption. The C55x DSP architecture achieves high performance and low power consumption by increasing parallelism and working hard to save power. The CPU supports an internal bus structure consisting of a program bus, a 32-bit data read bus and two 16-bit data read buses, two 16-bit data write buses, and additional buses dedicated to peripheral and DMA activities . These buses provide the ability to perform up to four 16-bit data reads and two 16-bit data writes in a cycle. The device also includes four DMA controllers, each with 4 channels, allowing data movement in the context of 16 independent channels without CPU intervention. Each DMA controller can perform a 32-bit data transfer in parallel in each cycle and is independent of CPU activity.