About
Schematics are available for download under the GPL.
The PCB layout will not be released due to the time
and expense of prototype production.
Features
Analog Devices Blackfin 532 DSP
- 400MHz
- 32MB SDRAM (up to 128MB with 1Gb parts)
- 1MB flash - can be expanded with SPI flash
- USB 2.0 device using NET2272
- 2 SPORTS (Synchronous serial compatible with many audio ADCs and DACs)
- SPI with 7 chip selects available
- UART
Xilinx Spartan III FPGA
- XC3S400 or XC3S1000
- FT256 BGA package for excellent signal integrity
- 32MB SDR SDRAM 16 bits wide
- Configured by DSP (slave serial)
- 80 IO to header
- 60MHz 8 bit PPI link to DSP
- SPI to DSP
- 1.2V SMPS using LM3475 - optional external 1.2V supply
- 2.5V LDO onboard
General:
- 80x55mm 4 layer PCB with parts on both sides
- 3.3VDC power input
- 2 80 pin Hirose DF17 connectors for expansion
Software:
- DSPCARD should be able to run uCLinux or RTEMS, but I do not support these (or any software for that matter)
- A small RTOS is currently being developed for DSPCARD. This should allow for the entire kernel to reside in
instruction SRAM. This will enable faster operation than uCLinux in SDRAM.
Software used for schematics, board layout:
Downloads
WARNING: preliminary and untested schematics. These may change at
any time.
Progress
6/16/2005 Ordered pcb from ProtoExpress, waiting on parts
6/26/2005 Recieved board, still waiting for FPGA, more flux, LM3475
7/11/2005 Recieved dspdev development and programming board from Advanced Circuits. All parts except the FPGA have arrived.
7/12/2005 Installed DSP, ran first program, a simple LED flasher written in assembly
7/19/2005 FPGA BGA soldering successful
More information
7/20/2005 FPGA bitstream loader written, tested with DAC on dspdev at 80MHz
8/10/2005 USB working at both full and high speed, RTOS getting closer to being finished
Errata:
None yet. Let me know if you find anything wrong.
Copyright Info:
All schematics and software are released under the GNU GPL. See the
COPYING file included with the source for more information. I do not guarantee
the design of the hardware or software to be free of flaws. You are
responsible for ensuring that it is suitable for your application.
If you would be interested in using this design under a different
license, please contact me for more information.
Update: No DSPcards available for purchase:
I did not recieve enough interest in a production run of DSPcards
to proceed. Thanks for your interest.
Related:
Last updated 5/9/2006
If you have any comments or questions feel free to send me an email.
Please us a descriptive subject if you would like your message read.
m-a-i-l at this domain name. Sorry, for having to list the address this way, but the old one got 300 spams per day.
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