DSP56852 General Description

• 120 MIPS at 120MHz
• 6K x 16-bit Program SRAM
• 4K x 16-bit Data SRAM
• 1K x 16-bit Boot ROM
• 21 External Memory Address lines, 16 data lines and four chip selects
• One (1) Serial Port Interface (SPI) or one (1) Improved Synchronous Serial Interface (ISSI)
• One (1) Serial Communication Interface (SCI)
• Interrupt Controller
• General Purpose 16-bit Quad Timer
• JTAG/Enhanced On-Chip Emulation (OnCE™) for unobtrusive, real-time debugging
• Computer Operating Properly (COP)/Watchdog Timer
• 81-pin MAPBGA package
• Up to 11 GPIO

56852 Features
Core
• Efficient 16-bit engine with dual Harvard architecture
• 120 Million Instructions Per Second (MIPS) at 120MHz core frequency
• Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)
• Four (4) 36-bit accumulators including extension bits
• 16-bit bidirectional shifter
• Parallel instruction set with unique DSP addressing modes
• Hardware DO and REP loops
• Three (3) internal address buses and one (1) external address bus
• Four (4) internal data buses and one (1) external data bus
• Instruction set supports both DSP and controller functions
• Four (4) hardware interrupt levels
• Five (5) software interrupt levels
• Controller-style addressing modes and instructions for compact code
• Efficient C Compiler and local variable support
• Software subroutine and interrupt stack with depth limited only by memory
• JTAG/Enhanced OnCE debug programming interface