MIDI Matrix-Router for 1024 channels with FPGA

*MIDI Matrix Router*
	MIDI ROUTER MATRIX	To transport data with low latency a 16MHz bus mixer is implemented in the workstation. To mix from outside the workstation a 32 input / output MIDI board was created performing with 200 MBit of bandwidth and transports data with only low latency. The mixer is the same wich already was used in the S/PDIF Mix Matrix. 32 x 32 channel - mixer / router: The FPGA can easily handle 32x32 virtual MIDI channels and route them from and to any source and destination nearly no latency. To handle 2x2 times the mixer's capabilities, 16 sub mixers are used running on 16 MHz each. Thus 8x8 x n paths operate at 31,250bps. 4 classic MIDI channels are grouped together and mixed into one of 4 S/PDIF channels by using a 32 x 4 word input buffer and four switch lanes at 32 MHz raw bandwidth. Unlike in the former switch version, all channels can be routed to all outputs performing like an Ethernet-router. Therefore all inputs are registered with a 2-word input buffer and eventually switch to a 8 word output buffer. So 8 MIDI-input channels can drive the same output at the same point of time without overloading it. Currently there is no commercial studio device which can do this. 32 channel - IO - PCB: A new Cyclone II FPGA from Altera is used using Quartus Design Software. The Design has been done with CadSoft-EAGLE. Development has been done with a evaluation board system: real time signal test A test of the signal including latency measurement is performed by a usb-based logic analyser from Intronix. It is able to measure signal delays with a precision downto 4ns effectively Intronix GUI Read about the former version: MIDI switch 32x32
	full transmission of all channels within one clock cycle 16MHz x 8 Bits 32 x 32 channels full routing
	96 kHz Audio DSP