DESCRIPTION

· The ADSP-2186 is a single-chip microcomputer optimized for digital signal processing (DSP) and high-speed numeric processing applications.

· It integrates the ADSP-2100 family base architecture with two serial ports, a 16-bit internal DMA port, a byte DMA port, a programmable timer, Flag I/O, extensive interrupt capabilities, and on-chip program and data memory.

· The device features 40K bytes of on-chip memory, configured as 8K words (24-bit) of program RAM and 8K words (16-bit) of data RAM.

· Power-down circuitry is included to meet low power requirements for battery-operated portable equipment.

· Available in 100-lead LQFP and 144-Ball Mini-BGA packages.

FEATURES

· 25 ns instruction cycle time with 40 MIPS sustained performance.

· Single-cycle instruction execution and context switch.

· 3-bus architecture allows dual operand fetches in every instruction cycle.

· Multifunction instructions and power-down mode with low CMOS standby power dissipation.

· ADSP-2100 family code compatible with instruction set extensions.

· Dual-purpose program memory for both instruction and data storage.

· Independent ALU, multiplier/accumulator, and barrel shifter computational units.

· Two independent data address generators and a powerful program sequencer.

· Programmable 16-bit interval timer with prescaler.

· 16-bit internal DMA port for high-speed access to on-chip memory.

· 4 MByte byte memory interface for data tables and program overlays.

· 8-bit DMA to byte memory for transparent program and data memory transfers.

· I/O memory interface with 2048 locations supporting parallel peripherals.

· Programmable memory strobe and separate I/O memory space for glueless system design.

· Two double-buffered serial ports with companding hardware and automatic data buffering.

· Automatic booting of on-chip program memory from byte-wide external memory.

· Six external interrupts and 13 programmable flag pins for flexible system signaling.

· UART emulation through software SPORT reconfiguration.

· ICE-Port™ emulator interface for debugging in final systems.

APPLICATIONS

· Digital signal processing (DSP) applications.

· High-speed numeric processing.

· Battery-operated portable equipment.

· Systems requiring low power dissipation.

· Applications needing extensive interrupt capabilities and on-chip memory.