Epcs Serial Flash Controller Qsys Serial Flash Controller

Epcs Serial Flash Controller Qsys Serial Flash Controller

When you compile the Qsys system in the QuartusII software, the EPCS serial flash controller core signals are routedautomatically to the device pins for the EPCS device.

Please reportthis problem to the public mailing list cygwincygwin.com cygwin.

You can find voltage supplies details from the File:Cyclone-IV-Device-Handbook.pdf.

Noting that EP2C5 requires 1.0V1.2V for Internal core supply voltage (VCCINT) and IO banks power supply VCCO can be connected to 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V to supply each area with different voltage standards.

So for normal operation, the power supply of the board is designed for converting input voltage 5V to multiple voltages 3.3V, 1.2V.

Meanwhile, a PWR LED is connected to 3.3V output, to meet the needs of checking power operation status.

The FPGA has dedicated global clock pin, which is connected to each register of the device.

A 50MHz crystal oscillator on board is used for supply accurate clock.

RST reset Circuit is a RC reset Circuit with RESET button switch, which is pressed to generate a Reset-signal, active-low.

FPGA will be reconfigured without reboot when the nCONFIG key is pressed.

FPGA reconfigured at each reboot is a feature of SRAM-based FPGA.

Within the FPGA, many programmable multiplexers, logic, interconnect nodes and RAM initialization, etc.

Meanwhile, JTAG has more priority than other configuration method.

File to be programmed to EPCS should be converted to.jic file by Quartus.

That is, Set it as JTAG Indirect Configuration File and then uses the JTAG interface to program the EPCS device.

EPCS16 is one of advanced Configuration Device, 16Mbit density.

When a low level inputs to LED pin, the corresponding LED turns on.

On the one hand, users can easily design extension circuit according to their needs, On the other hand, the interfaces of core board and extension board are fully considered about the compatible to other FPGA boards, make update easier.

The onboard JTAG interface is used for programming with dedicated programmer USB Blaster, as shown in the following figure.

The PTF file directory depends on where you placed the Nios II processors in step 1.

When download completed, the demo code should starts to run automatically.

Verilog, VHDL and NIOS are used in the following demos, please download the corresponding one.

If there are differences on any example, they will be special explained.

It is possible to config the written data by shorting the pins 3-4, 5-6, 7-8,9-10 respectively using jumper caps.