Difference between revisions of "StrichLux/CORE"

From Hackstrich
(Initial thoughts.)
 
(Upgrading to the 8 series FPGA, as it has 4 sysDSP blocks instead of 3 (and a bit more room gate-wise))
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** Split into 4 channels, so each block would be 8kbit/1kbyte
 
** Split into 4 channels, so each block would be 8kbit/1kbyte
 
** Reading/writing needs to happen in parallel for each block
 
** Reading/writing needs to happen in parallel for each block
* Looking at using the LFXP2-5E-5TN144C FPGA
+
* Looking at using the LFXP2-8E-5TN144C FPGA
 +
** 5 series is ~$5 cheaper but only has 3 sysDSP blocks, given the 4 channel system, 4 blocks seems a better fit
  
 
[[Category:Projects]]
 
[[Category:Projects]]
 
[[Category:Current Projects]]
 
[[Category:Current Projects]]
 
[[Category:Status/Initial Design]]
 
[[Category:Status/Initial Design]]

Revision as of 17:26, 4 May 2012

The StrichLux Core is the "motherboard" of the system, that holds the framebuffers and lets the I/O modules talk to each other. It also holds the "transform engine", which is the FPGA that can do various transforms between the input and output.

Project Log

  • 2012-05-04: Started putting together specs/BOM.

Project Ideas

  • Required I/O
    • 4 Input modules (one SPI slave transceiver and one I2C master transceiver each)
    • 4 output modules (one SPI slave transceiver and one I2C master transceiver each)
    • RS232 and USB for troubleshooting and configuring the core board itself
    • 1 Power module (one I2C master transceiver)
  • Local framebuffer memory
    • Dual-port memory would be best so the output and input sections can both deal with it independently
    • 8 bits per frame * 512 channels per universe * 4 universes = 16kbit (2kbyte) of framebuffer memory required
      • Twice that for double-buffering would be awesome, so 32kbit/4kbyte of dual-port memory wanted
    • Split into 4 channels, so each block would be 8kbit/1kbyte
    • Reading/writing needs to happen in parallel for each block
  • Looking at using the LFXP2-8E-5TN144C FPGA
    • 5 series is ~$5 cheaper but only has 3 sysDSP blocks, given the 4 channel system, 4 blocks seems a better fit