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ADSP-2184
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1999
DSP Microcomputer
FUNCTIONAL BLOCK DIAGRAM
FEATURES
PERFORMANCE
25 ns Instruction Cycle Time 40 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 200 Cycle Recovery from
Power-Down Condition
Low Power Dissipation in Idle Mode
INTEGRATION
ADSP-2100 Family Code Compatible, with Instruction
Set Extensions
20K Bytes of On-Chip RAM, Configured as
4K Words On-Chip Program Memory RAM and
4K 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 LQFP
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 and Program Overlays (Made Selectable)
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 and 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
GENERAL DESCRIPTION
The ADSP-2184 is a single-chip microcomputer optimized for
digital signal processing (DSP) and other high speed numeric
processing applications.
The ADSP-2184 combines the ADSP-2100 family base archi-
tecture (three computational units, data address generators and
a program sequencer) 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 ADSP-2184 integrates 20K bytes of on-chip memory con-
figured as 4K words (24-bit) of program RAM and 4K words
(16-bit) of data RAM. Power-down circuitry is also provided to
meet the low power needs of battery operated portable equip-
ment. The ADSP-2184 is available in 100-lead LQFP package.
In addition, the ADSP-2184 supports instructions that include
bit manipulations—bit set, bit clear, bit toggle, bit test— ALU
constants, multiplication instruction (x squared), biased round-
ing, result free ALU operations, I/O memory transfers, and
global interrupt masking for increased flexibility.
Fabricated in a high speed, double metal, low power, CMOS
process, the ADSP-2184 operates with a 25 ns instruction cycle
time. Every instruction can execute in a single processor cycle.
ICE-Port is a trademark of Analog Devices, Inc.
All trademarks are the property of their respective holders.
SERIAL PORTS
SPORT 1SPORT 0
MEMORY
PROGRAMMABLE
I/O
AND
FLAGS
BYTE DMA
CONTROLLER
4K 3 24
PROGRAM
MEMORY
4K 3 16
DATA
MEMORY
TIMER
ADSP-2100 BASE
ARCHITECTURE
SHIFTER
MAC
ALU
ARITHMETIC UNITS
POWER-DOWN
CONTROL
PROGRAM
SEQUENCER
DAG 2DAG 1
DATA ADDRESS
GENERATORS
PROGRAM MEMORY ADDRESS
DATA MEMORY ADDRESS
PROGRAM MEMORY DATA
DATA MEMORY DATA
EXTERNAL
DATA
BUS
EXTERNAL
ADDRESS
BUS
INTERNAL
DMA
PORT
EXTERNAL
DATA
BUS
OR
FULL MEMORY
MODE
HOST MODE
