GENERAL DESCRIPTION

The ADSP-21990 is a mixed-signal DSP controller based on the ADSP-2199x DSP core, suitable for a variety of high performance industrial motor control and signal processing applications that require the combination of a high performance DSP and the mixed-signal integration of embedded control peripherals such as analog-to-digital conversion. Target applications include: industrial motor drives, uninterruptible power supplies, optical networking control, data acquisition systems, test and measurement systems, and portable instrumentation.

FEATURES

ADSP-2199x, 16-bit, fixed-point DSP core with up to 160 MIPS sustained performance

8K words of on-chip RAM, configured as 4K words on-chip, 24-bit program RAM and 4K words on-chip, 16-bit data RAM

External memory interface

Dedicated memory DMA controller for data/instruction transfer between internal/external memory

Programmable PLL and flexible clock generation circuitry enables full speed operation from low speed input clocks

IEEE JTAG Standard 1149.1 test access port supports on-chip emulation and system debugging

8-channel, 14-bit analog-to-digital converter system, with up to 20 MSPS sampling rate (at 160 MHz core clock rate)

3-phase, 16-bit, center-based PWM generation unit with 12.5 ns resolution at 160 MHz core clock (CCLK) rate

Dedicated 32-bit encoder interface unit with companion encoder event timer

Dual 16-bit auxiliary PWM outputs

16 general-purpose flag I/O pins

3 programmable 32-bit interval timers

SPI communications port with master or slave operation

Synchronous serial communications port (SPORT) capable of software UART emulation

Integrated watchdog timer

Dedicated peripheral interrupt controller with software priority control

Multiple boot modes

Precision 1.0 V voltage reference

Integrated power-on-reset (POR) generator

Flexible power management with selectable power-down and idle modes

2.5 V internal operation with 3.3 V I/O

Operating temperature range of –40℃ to +85℃

196-ball CSP_BGA and 176-lead LQFP package