ALTERA QUARTUS II MANUAL SERIAL

The clock input to the BST circuitry.Д¬onfiguration Circuit An EPCS16, Altera EPCS serial flash devices, is connected to the FPGA for keeping the data without power supplied. Input pin that provides the control signal to determine the transitions of the TAP controller state machine. Serial data output pin for instructions as well as test and programming data. Serial input pin for instructions as well as test and programming data. That is, Set it as 'JTAG Indirect Configuration File' and then uses the JTAG interface to program the EPCS device. File to be programmed to EPCS should be converted to. User can use dedicated Altera programmer USB Blaster to debug and program. Of course this board provides JTAG interface. Meanwhile, JTAG has more priority than other configuration method. Usually All Altera FPGA can be configured via JTAG commands. The configured data of FPGA can be downloaded to target device with 3 methods, FPGA Active, FPGA Passive and JTAG, according to the role played in Configure Circuit. are controlled by configuration data, which is stored in FPGA RAM. Within the FPGA, many programmable multiplexers, logic, interconnect nodes and RAM initialization, etc. FPGA reconfigured at each reboot is a feature of SRAM-based FPGA. The schematic of the circuit:ДЄctive-low Reset, FPGA will be reconfigured, as soon as PROG_B pin restores to high levelД¬onfiguration/Programming Interface Configuration is also known as loading and download. FPGA will be reconfigured without reboot when the nCONFIG key is pressed. While nCONFIG Reset Circuit is triggered by nCONFIG key. RST reset Circuit is a RC reset Circuit with RESET button switch, which is pressed to generate a Reset-signal, active-low. Reset Circuit The Reset Circuit contains RST Reset Circuit and nCONFIG Reconfigure Circuit. A 50MHz crystal oscillator on board is used for supply accurate clock. We use a global clock interface CLK in our design, because it is single clock interface, we consider the use of active crystal clock as an external clock source.

The shortest time span of GCLK can supply is used for delay. The FPGA has dedicated global clock pin, which is connected to each register of the device. The schematic of the circuit:ДЈ.3V voltage, converted from AMS1117-3.3, is generally used to supply the voltage of clock, configure circuit, special features pin high, etc.ДЎ.2V voltage, converted from AMS1117-1.2, is generally used to supply the voltage of VCCINT, VCC_PLL, etc.Д¬lock Circuit The best solution of FPGA clock circuit is: A main clock, which is driven by dedicated global clock input(GCLK), controls each timing device of the design. Meanwhile, a PWR LED is connected to 3.3V output, to meet the needs of checking power operation status. So for normal operation, the power supply of the board is designed for converting input voltage 5V to multiple voltages 3.3V, 1.2V. Noting that EP2C5 requires 1.0V/1.2V for Internal core supply voltage (VCCINT) and I/O 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. You can find voltage supplies details from the File:Cyclone-IV-Device-Handbook.pdf. Power Supply Circuit Power Supply Circuit is the basic circuit for normal operation. Then, how and why do the devices connect together? What are their functions? Framework of the Circuit Core-board-circuit framework is shown in the following figure: There are voltage regulator AMS1117, serial FLASH memory EPCS16, crystal oscillator, JTAG interface, LEDs, buttons, etc., beside main FPGA. Go with you to witness how a chip evolves to a board. Hardware Design This chapter mainly about the basic idea of core-board hardware design. Overview Basic operation and demo user guide of Waveshare FPGA Altera serial board are in the present document for helping you quick start your FPGA development.

2.5 Configuration/Programming Interface.

Altera quartus ii manual