StrichLux/CORE
From Hackstrich
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
- 2012-05-06: Schematic complete, checklist still needs to be run.
- 2012-05-05: Started working on the schematic.
- 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
