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Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Analog Devices, Inc., 2002ADMCF341
DashDSP
28-Lead Flash Mixed-Signal DSP
with Enhanced Analog Front End
FUNCTIONAL BLOCK DIAGRAM
MEMORY BLOCK
PROGRAM
ROM
4K x 24
PROGRAM
FLASH
4K x 24
PROGRAM
RAM
512 x 24
DATA
MEMORY
512 x 16
V
REF
2.5V
ANALOG
INPUTS
16-BIT
THREE-
PHASE
PWM
POR
TIMER
SERIAL PORT
SPORT 0
PIO
2 x 16-BIT
AUX
PWM
WATCH-
DOG
TIMER
ADSP-21xx BASE
ARCHITECTURE
DATA
ADDRESS
GENERATORS
DAG 1 DAG 2
PROGRAM
SEQUENCER
ARITHMETIC UNITS
SHIFTER
MAC
ALU
PROGRAM MEMORY ADDRESS
DATA MEMORY ADDRESS
PROGRAM MEMORY DATA
DATA MEMORY DATA
SPORT 1
MOTOR CONTROL PERIPHERALS
ADC SUBSYSTEM
I
SENSE
AMP
AND TRIP
SHA
3
TIMERS
MULTIPLEXED ON EXTERNAL PINS
3
6
9
7
2
DashDSP is a trademark of Analog Devices, Inc.
FEATURES
20 MHz Fixed-Point DSP Core
Single-Cycle Instruction Execution (50 ns)
ADSP-21xx Family Code Compatibility
Independent Computational Units
ALU, Multiplier/Accumulator, Barrel Shifter
Multifunction Instructions
Single-Cycle Context Switch
Powerful Program Sequencer
Zero Overhead Looping
Conditional Instruction Execution
Two Independent Data Address Generators
Memory Configuration
512 16-Bit Data Memory RAM
512 24-Bit Program Memory RAM
4K 24-Bit Program Memory ROM
4K 24-Bit Program Flash Memory
Three Independent Flash Memory Sectors
3584 24-Bit, 256 24-Bit, 256 24-Bit
Low-Cost Pin-Compatible ROM Option
16-Bit Watchdog Timer
Programmable 16-Bit Internal Timer with Prescaler
Two Double Buffered Serial Ports with SPI Mode Support
Integrated Power-On Reset Function
Three-Phase 16-Bit PWM Generation Unit:
16-Bit Center-Based PWM Generator
Programmable PWM Pulsewidth
Edge Resolution to 50 ns
153 Hz Minimum Switching Frequency
Double/Single Duty Cycle Update Mode Control
Individual Enable and Disable for Each PWM Output
High-Frequency Chopping Mode for Transformer
Coupled Gate Drives
External PWMTRIP Pin
Integrated 6-Channel ADC Subsystem
Three Bipolar I
SENSE
Inputs with Programmable
Sample-and-Hold Amplifier and Overcurrent Pro-
tection (Usable as Three Dedicated Analog Inputs)
Muxed Auxiliary Analog Inputs
Internal Voltage Reference (2.5 V)
Acquisition Synchronized to PWM Switching
Frequency
9-Pin Digital I/O Port
Bit Configurable as Input or Output
Change of State Interrupt Support
Two 16-Bit Auxiliary PWM Timers
Synthesized Analog Output
Programmable Frequency
0% to 100% Duty Cycle
Two Programmable Operational Modes
Independent Mode/Offset Mode
Motor Types
Permanent Magnet Synchronous Motors (PMSM)
Brushless DC Motors (BDCM)
AC Induction Motors (ACIM)
APPLICATIONS
Refrigerator and Air Conditioner Compressor
Washing Machines
Industrial Variable Speed Drives
HVAC