
DE1 User Manual
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2.2 Block Diagram of the DE1 Board
Figure 2.2 gives the block diagram of the DE1 board. To provide maximum flexibility for the user,
all connections are made through the Cyclone II FPGA device. Thus, the user can configure the
FPGA to implement any system design.
Figure 2.2. Block diagram of the DE1 board.
Following is more detailed information about the blocks in Figure 2.2:
Cyclone II 2C20 FPGA
• 18,752 LEs
• 52 M4K RAM blocks
• 240K total RAM bits
• 26 embedded multipliers
• 4 PLLs
• 315 user I/O pins
• FineLine BGA 484-pin package
Serial Configuration device and USB Blaster circuit
• Altera’s EPCS4 Serial Configuration device
• On-board USB Blaster for programming and user API control
• JTAG and AS programming modes are supported
SRAM
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