dspblok 21489 - Analog Devices ADSP-21489 SHARC DSP Module

The dspblok™ 21489 is a highly integrated DSP module that incorporates an Analog Devices’ ADSP-21489 SHARC DSP operating at 400 MHz, flash, EEProm, and a switching power supply to support the core voltage requirements. All the connections are brought out to standard 2mm dual row header footprints. The board is only 60mm x 60mm (2.36" x 2.36").

The dspblok 21489 also includes a high-speed USB transceiver. You can use the USB to upload DSP code via Danville's dspBootloader™.

The dspblok 21489 is a low-cost version of our fourth generation SHARC based products. It is compatible with the dspblok 21469. It is a good choice when you need processing power, but don't need external memory.

The dspblok 21489 brings out the lower 8 bits of external data bus including all address lines with the exception of MS0#. Since the data bus is primarily used for I/O expansion, we elected to ignore the upper data lines (D15-D8) to maintain compatibility with the ADSP-21469.

Development couldn't be easier. You can connect to an Analog Devices ICE using a Danville JTAG Adapter. Analog Devices has two development packages available: CrossCore Embedded Studio or Visual DSP++. If you are starting a new project or designing your own target, you may want to use the dspblok Development Board. This board is convenient as a starting place to connect other development boards (data converters and I/O). It includes a power supply and computer connections to get you started.


Key Components:

  • Analog Devices ADSP-21489 (176 pin)
  • Adesto AT25SF161 16Mb Serial Flash
  • Microchip 25AA02E48 Serial EEProm with MAC Address
  • FTDI FT232H

Exposed I/O (3.3V):

  • DAI 20-DAI 1
  • DPI 14-DPI 7, DPI 4, DPI 3-DPI 1  (Assigned as SCK, MISO, & MOSI)
  • FLG1, FLG0, RESET# (Open Drain)
  • DATABUS: D7-D0, A23-A0, RD#, WR#, ACK, MS3#-MS1#


  • 60mm x 60mm
  • Height: 4mm above PCB, 2mm + 4.3mm (mating header) below PCB
  • PCB Thickness: 1.6mm


  • Dual Row 2mm Headers

Power Requirements:

  • 3.3V-400mA, Largely dependent on core clock, operating temperature and computational load.

(See User Manual for more details.)

Ordering Information:



JTAG Adapter

dspblok Development Board


400 MHz, 0 to +70 °C

2mm to ADI 14 pin

Power Supply, Connectors and Expansion

Part Number:

P/N: A.08489D

P/N: A.08153

P/N: A.08102B