This document describes migration from the Texas Instruments TMS320C64x digital signal processor (DSP) to the TMS320C64x+ DSP. The objective of this document is to indicate differences between the two cores and to briefly describe new features. Functionality in the devices that is identical is not included. For detailed information about either device, see the TMS320C64x/C64x+ DSP CPU and Instruction Set Reference Guide (SPRU732). For more detailed information about the internal DMA (IDMA) and interrupts, see the TMS320C64x+ Megamodule Peripherals Reference Guide (SPRU871). For more information about cache operations, see the TMS320C64x+ DSP Cache User’s Guide (SPRU862). For more information about the enhanced DMA (EDMA) version 3.0, see the EDMA v3.0 (EDMA3) Migration Guide for TMS320DM644x DMSoC (SPRAAA6).