Key facts
- Brand
- Analog Devices
- Model
- ADSP-21990
- Industry
- Industrial
- Documents
- 6
- Languages
- EN
- Last added
- 2012-08-03
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Analog Devices ADSP-21990 EZ-KIT Lite Evaluation System User Manual
This manual guides users through installing the software and hardware for the ADSP‑21990 EZ‑KIT Lite evaluation system, a board built around the ADSP‑21990 fixed‑point digital signal processor. It includes warranty information, safety notices, and contact details for Analog Devices support.
Key sections cover PC configuration, VisualDSP++ installation, board jumper settings, connector descriptions, system architecture, and example programs. Appendices provide schematics and reference tables for quick troubleshooting and development.
Analog Devices ADSP-21990 specifications
| DSP Core Type | 16-bit, fixed-point |
|---|---|
| Sustained Performance | up to 160 MIPS |
| On-Chip RAM | 8K words |
| ADC Channels | 8-channel |
| ADC Resolution | 14-bit |
| ADC Sampling Rate | up to 20 MSPS |
| PWM Phases | 3-phase |
| PWM Resolution | 12.5 ns |
| Operating Temperature | -40°C to +85°C |
| Package Types | 196-ball CSP_BGA and 176-lead LQFP |
Source: Analog Devices ADSP-21990 Mixed-Signal DSP Controller Datasheet
All Analog Devices ADSP-21990 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
- Analog Devices ADSP-21990 Implementation of PI Controllers Application Note 11 p
- Analog Devices ADSP-21990 ADC Utilization Application Note 7 p
- Analog Devices ADSP-21990 Generation of Three-phase Sine-wave PWM Patterns Application Note 7 p
- Analog Devices ADSP-21990 Reference Frame Conversions Application Note 14 p
Questions answered in these manuals
What is the maximum sustained performance of the ADSP-21990?
The ADSP-21990 provides up to 160 MIPS sustained performance.
From: Analog Devices ADSP-21990 Mixed-Signal DSP Controller Datasheet
Does the ADSP-21990 include an on-chip memory?
Yes, it integrates 8K words of on-chip RAM configured as 4K words of program RAM and 4K words of data RAM.
From: Analog Devices ADSP-21990 Mixed-Signal DSP Controller Datasheet
What format are coefficients and signals scaled to for correct operation on the ADSP-21990?
All coefficients and signals must be scaled to the common 1.15 fixed-point representation.
From: Analog Devices ADSP-21990 Implementation of PI Controllers Application Note
How is wind-up in the integral part avoided?
Wind-up is avoided by saturating the current sum whenever it exceeds +1 or is less than -1.
From: Analog Devices ADSP-21990 Implementation of PI Controllers Application Note
What library routines are defined for initializing and reading the ADC block?
The library defines two routines: ADC_Init for initialization and configuring interrupts, and ADC_Read for reading channel values with offset adjustments.
From: Analog Devices ADSP-21990 ADC Utilization Application Note
How is the amplitude of the PWM waveform controlled in the software example?
The amplitude is controlled by the ADC channel value, which acts as an amplitude factor.
From: Analog Devices ADSP-21990 ADC Utilization Application Note