TMS320C6726

The TMS320C6726 is the next generation of Texas Instruments' C67x(TM) family of high-performance 32-/64-bit floating-point digital signal processors. The TMS320C672x includes the TMS320C6727,(1) TMS320C6726, and TMS320C6722 devices.

The memory controller TMS320C6726 supports single-cycle data accesses from the C67x+ CPU to the RAM and ROM. Up to three parallel accesses to the internal RAM and ROM from three of the following four sources aresupported:
* Two 64-bit data accesses from the C67x+ CPU
* One 256-bit program fetch from the core and program cache
* One 32-bit data access from the peripheral system (either dMAX or UHPI)

The large (32K-byte) program cache translates to a high hit rate for most applications. This TMS320C6726 prevents most program/data access conflicts to the on-chip memory. It also enables effective program execution from an off-chip memory such as an SDRAM.

The dMAX TMS320C6726 is given highest-priority since it is responsible for the most time-critical I/O transfers, followed next by the UHPI, and finally by the CPU.

dMAX Dual Data Movement Accelerator. The dMAX TMS320C6726 is a module designed to perform Data Movement Acceleration. The Data Movement Accelerator (dMAX) controller handles user-programmed data transfers between the internal data memory controller and the device peripherals on the C672x DSPs. The dMAX allows movement of data to/from any addressable memory space including internal memory, peripherals, and external memory.

The dMAX controller TMS320C6726 includes features such as the capability to perform three-dimensional data transfers for advanced data sorting, and the capability to manage a section of the memory as a circular buffer/FIFO with delay-tap based reading and writing of data. The dMAX controller is capable of concurrently processing two transfer requests (provided that they are to/from different source/destinations).

SDRAM support includes x16 and x32 SDRAM devices with 1, 2, or 4 banks.

The C6726 and TMS320C6726 support SDRAM devices up to 128M bits.

The TMS320C6726 extends SDRAM support to 256M-bit and 512M-bit devices.