GENERAL DESCRIPTION
The ADSP-2185 is a single-chip microcomputer optimized for digital signal processing (DSP) and other high speed numeric processing applications.

FEATURES
PERFORMANCE
    30 ns Instruction Cycle Time 33 MIPS Sustained Performance
    Single-Cycle Instruction Execution
    Single-Cycle Context Switch
    3-Bus Architecture Allows Dual Operand Fetches in Every Instruction Cycle
    Multifunction Instructions
    Power-Down Mode Featuring Low CMOS Standby
        Power Dissipation with 100 Cycle Recovery from Power-Down Condition
    Low Power Dissipation in Idle Mode

INTEGRATION
    ADSP-2100 Family Code Compatible, with Instruction Set Extensions
    80K Bytes of On-Chip RAM, Configured as
        16K Words On-Chip Program Memory RAM and
        16K Words On-Chip Data Memory RAM
    Dual Purpose Program Memory for Both Instruction and Data Storage
    Independent ALU, Multiplier/Accumulator and Barrel Shifter Computational Units
    Two Independent Data Address Generators
    Powerful Program Sequencer Provides
        Zero Overhead Looping Conditional Instruction Execution
    Programmable 16-Bit Interval Timer with Prescaler
    100-Lead TQFP

SYSTEM INTERFACE
    16-Bit Internal DMA Port for High Speed Access to On-Chip Memory (Mode Selectable)
    4 MByte Byte Memory Interface for Storage of Data Tables & Program Overlays
    8-Bit DMA to Byte Memory for Transparent Program and Data Memory Transfers (Mode Selectable)
    I/O Memory Interface with 2048 Locations Supports Parallel Peripherals (Mode Selectable)
    Programmable Memory Strobe & Separate I/O Memory Space Permits “Glueless” System Design (Mode Selectable)
    Programmable Wait State Generation
    Two Double-Buffered Serial Ports with Companding Hardware and Automatic Data Buffering
    Automatic Booting of On-Chip Program Memory from Byte-Wide External Memory, e.g., EPROM, or Through Internal DMA Port
    Six External Interrupts
    13 Programmable Flag Pins Provide Flexible System Signaling
    UART Emulation through Software SPORT Reconfiguration
    ICE-Port™* Emulator Interface Supports Debugging in Final Systems