What about this as a platform for a SD transport, a USB transport or an ethernet transport http://www.cyantechnology.com/mcu/mcu_eCOG1X.php
• I2S digital audio output
• USB 2.0 480MBit ULPI Interface
• In Built 10/100 Mbps Ethernet MAC
• Dual Smart Card Interface
• External Memory Interface
• 4x32 segment LCD controller
Can use external clock - so low jitter clock could be sent back from an attached DAC
Free compiler & development tools - a number of library modules & applications already available.
Cheap boards - for instance €37 for this http://www.cyantechnology.com/acatalog/Module.html - It has 10/100m ethernet, USB2, SD, LCD interfaces & I2S outputs built-in - so it could be a standalone player using SDH cards
One problem I see is a slow ethernet throughput but I think that's not a limitation of the MCU just the UDP library module. Another problem might be that a MCU radiates more RFI than an FPGA - I don't know how significant this might be.
Any thoughts?
Edit: Oh and it uses C programming language - another plus as far as I'm concerned
• I2S digital audio output
• USB 2.0 480MBit ULPI Interface
• In Built 10/100 Mbps Ethernet MAC
• Dual Smart Card Interface
• External Memory Interface
• 4x32 segment LCD controller
Can use external clock - so low jitter clock could be sent back from an attached DAC
Free compiler & development tools - a number of library modules & applications already available.
Cheap boards - for instance €37 for this http://www.cyantechnology.com/acatalog/Module.html - It has 10/100m ethernet, USB2, SD, LCD interfaces & I2S outputs built-in - so it could be a standalone player using SDH cards
One problem I see is a slow ethernet throughput but I think that's not a limitation of the MCU just the UDP library module. Another problem might be that a MCU radiates more RFI than an FPGA - I don't know how significant this might be.
Any thoughts?
Edit: Oh and it uses C programming language - another plus as far as I'm concerned
And here's another nail in the coffin - a reply from them:
Unfortunately the performance required to handle audio and operate USB or Ethernet simultaneously is beyond what the eCOG1X can provide. A cut-down version (reading of an SD card and output on the I2S port) would still require some analysis before confirming whether this was definitely possible.
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