I found a very interesting picture from a Emu Board.
Look it here:
http://www.netzmarkt.de/thomann/emu_1820m_digital_audio_system_prodinfo.html#fpix
-Push the 360 degree button
-make the windows big
-change view to rear
-And zoom to the small board the left chip, that Chip looks familiar ;D
The right Chip is a FPGA or a CPLD from XILINX.
On the main Board is a big FPGA SPARTAN CHIP left from the EMU DPS chip.
PS:
That is my next Soundcard! ;D
(Emulator X Studio with CD-Bundle)
Jack