Xilinx Frequency Generator manual PicoBlaze Circuit Diagram, On the LCD

Page 8

PicoBlaze Circuit Diagram

PicoBlaze provides the user interface and performs

the calculations required to generate the 32-bit DDS

‘JTAG_loader’ allows rapid

control word ‘N’ and 5-bit DDS scaling word ‘D’.

PicoBlaze code development.

Hint – The ‘fg_ctrl.psm’ file contains significant

program_rom

comments to explain the operations and calculations

fg_ctrl

that the PicoBlaze program is performing to

proc_reset

JTAG

generate ‘N’ and ‘D’ from the BCD value displayed

instruction

on the LCD.

lcd(7)

reset

clk

address

lcd(6)

kcpsm3_

instruction

lcd(5)

address

lcd(4)

processor

kcpsm3

rotary_press

rotary_press_in

input_ports

instruction

address

out_port

in_port

in_port

out_port

write_strobe

50MHz clock to all items on this page

0

read_strobe

read_strobe

port_id

clk

reset

port_id

interrupt

interrupt

interrupt_ack

clk

clk

rotary_filter & direction

interrupt_control

See reference

rotary_a

design called

rotary_left

‘Rotary Encoder

rotary_b

Interface for

rotary_event

interrupt_ack

Spartan-3E Starter

Kit’ for details of

this section.

Vcc

* StrataFLASH memory

strataflash_oe

*

must be disabled to

prevent interference with

strataflash_ce

*

the LCD display.

strataflash_we

*

Frequency Generator for the Spartan-3E Starter Kit 8

output_ports

7

write_strobe

6

5

4

3

2

1

led(7)

led(6)

led(5)

led(4)

led(3)

led(2)

led(1)

led(0)

bidirectional

LCD data

lcd(7)

lcd(6)

lcd(5) lcd(4)

lcd_rs lcd_rw

lcd_e

[4:0] dds_scaling_word

		D
	[31:24]
	[31:24]
	[23:16]


		dds_control_word
		dds_control_word

	[15:8]	N
	[15:8]	N


	[7:0]

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Contents Frequency Generator Limitations Double click on ‘installfrequencygenerator.bat’ Design OverviewOperating Instructions Edit cursor position modeEdit digit value mode Fpga Editor view PicoBlaze Design SizeMAP report Design Files Direct Digital Synthesis DDS Circuit Diagram ×16PicoBlaze Circuit Diagram On the LCDPhase Accumulator Waveforms Phase Accumulator Spectrum 12.5MHz Harmonic Fundamental 12.4125MHz FundamentalPhase Accumulator Final Output WaveformsFinal Output Spectrum 12.5MHz Fundamental 12.4125MHz Fundamental ±1.3MHzSetting DCM Frequency Aligned Mode Exercises, Experiments and Suggestions

Frequency Generator specifications

The Xilinx Frequency Generator is a versatile and robust solution designed for a variety of applications requiring precise frequency generation and control. This device capitalizes on Xilinx's proven technology in programmable logic, enabling engineers to implement custom frequency generation schemes tailored to specific application needs.

One of the main features of the Xilinx Frequency Generator is its flexible frequency range. It supports a wide spectrum of frequencies, making it suitable for applications in telecommunications, aerospace, automotive, and industrial automation. The ability to generate frequencies from kilohertz to gigahertz opens up possibilities for diverse scenarios, such as clock generation, signal synthesis, and modulation tasks.

Another significant characteristic of this frequency generator is its programmability. Leveraging Xilinx's FPGA architecture, users can easily configure and program the frequency generator to meet changing requirements. This programmability allows for rapid prototyping and design iterations, enabling engineers to achieve optimal configurations with minimal downtime.

The device also employs advanced phase-locked loop (PLL) technology, ensuring excellent stability and low phase noise. PLLs enable the generation of output frequencies that are phase-coherent with an input signal, which is critical for applications requiring precise synchronization. This feature is especially beneficial in communication systems, where accurate timing and frequency stability are essential.

Furthermore, the Xilinx Frequency Generator supports multiple output formats, including sinusoidal, square, and triangle waves. This versatility in signal output enhances its usability across different applications, allowing for easy integration into existing systems.

Another innovative aspect of this frequency generator is its integration with Xilinx's software tools, such as Vivado and ISE. These tools facilitate the design, simulation, and implementation of frequency generation strategies, enhancing productivity and ensuring robustness in design processes.

In addition, the frequency generator's power efficiency is noteworthy. By employing cutting-edge low-power design techniques, it reduces energy consumption without compromising performance, making it an ideal choice for battery-powered or energy-sensitive applications.

All in all, the Xilinx Frequency Generator exemplifies cutting-edge technology in frequency generation, offering flexible configuration, excellent stability, and user-friendly integration, making it a compelling choice for engineers across various industries seeking a reliable frequency generation solution.