Sigma DE2-70 manual Fpga

DE2-70 User Manual

Configuring the FPGA in JTAG Mode

Figure 5.1 illustrates the JTAG configuration setup. To download a configuration bit stream into the Cyclone II FPGA, perform the following steps:

•Ensure that power is applied to the DE2-70 board

•Connect the supplied USB cable to the USB Blaster port on the DE2-70 board (see Figure 2.1)

•Configure the JTAG programming circuit by setting the RUN/PROG switch (on the left side of the board) to the RUN position.

•The FPGA can now be programmed by using the Quartus II Programmer module to select a configuration bit stream file with the .sof filename extension

USB Blaster Circuit

Quartus II	USB	MAX	PROG/RUN		JTAG Config Signals
Programmer		3128			JTAG UART	JTAG Config Port
				"RUN"
					Auto

Power-on Config

EPCS16

Serial

Configuration

Device

FPGA

Figure 5.1. The JTAG configuration scheme.

Configuring the EPCS16 in AS Mode

Figure 5.2 illustrates the AS configuration set up. To download a configuration bit stream into the EPCS16 serial EEPROM device, perform the following steps:

•Ensure that power is applied to the DE2-70 board

•Connect the supplied USB cable to the USB Blaster port on the DE2-70 board (see Figure 2.1)

•Configure the JTAG programming circuit by setting the RUN/PROG switch (on the left side of the board) to the PROG position.

•The EPCS16 chip can now be programmed by using the Quartus II Programmer module to select a configuration bit stream file with the .pof filename extension

•Once the programming operation is finished, set the RUN/PROG switch back to the RUN

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