PyroElectro.com

ThePyroElectro · Posted: Tue Feb 19, 2008 7:17 am Post subject: Build A CPLD Dev Board

Kevin · Newbie Pyro Joined: 23 Nov 2007 Posts: 17

The large size image of the schematic at http://www.pyroelectro.com/tutorials/cpld_board/schematic.html doesn't work Crying or Very sad

ThePyroElectro · Posted: Thu Feb 21, 2008 7:16 pm Post subject:

Hey Kevin,

Thanks, I fixed it for you! Cool

jiaohai777 · Newbie Pyro Joined: 28 Jul 2008 Posts: 2

i want to add a clock signal to the board, can you tell me how to do it?

ThePyroElectro · Posted: Mon Jul 28, 2008 4:05 pm Post subject:

Hi jiaohai,

Sure I can tell you how to do that. Pin 83 is the 'GCLK1' (global clock input), connect your clock signal to that pin. You can use a 555-timer, crystal, ceramic...etc oscillator to create the clock signal for input.

Then in your VHDL/Verilog code you'll define that pin as a clock and you have a clock. Make sure to define the pin as a clock in the floorplanner.

jiaohai777 · Newbie Pyro Joined: 28 Jul 2008 Posts: 2

thanks a lot!

sreeram_shankar · Newbie Pyro Joined: 03 Oct 2008 Posts: 6

Hi,

sorry for stealing the thread !!!!!!!!!

Is there any way to get the CPLD samples to get the design started ?

Do altera support in this front ?

An other question regarding the clock what is the clock rate that is supported by the device that is mentioned so that we could get the crystal for that readily.

regards,
SreeramShankar

ThePyroElectro · Posted: Sun Oct 05, 2008 3:31 pm Post subject:

Hey,

You can buy the PLD from Altera. They should be cheap, like $10. Maybe if you tell them you are a student and working on a project they will give it to you for free.

Any clock up to 100 MHz is supported by the device. This should be written somewhere in the datasheet.

sreeram_shankar · Newbie Pyro Joined: 03 Oct 2008 Posts: 6

Hey,

i am through developing a CPLD board with your designs and i would like to have a USB based blaster since most of the laptops now dont have a Parallel port facility. How can we go about it.

Can u please post in a project that shows how we could make a USB blaster ?

Regards,
Sreeram

ThePyroElectro · Posted: Sun Nov 16, 2008 2:07 am Post subject:

Hey sreeram,

There's no easy way to make a USB byte blaster. Altera hasn't released the schematic for their USB byte blaster as they have for the Serial versions of it. You might have more luck looking at 3rd party designs for USB byte blasters. But to this day, I have not seen one.

Sorry!

sreeram_shankar · Newbie Pyro Joined: 03 Oct 2008 Posts: 6

hi,

I ws wondering as to how to make the CPLD board more fascinating to developers and took liberty to sketch out this mail.

How about developing some some small pyro modules that could fit the pyro CPLD development boards that we have built.

Can we go ahead to create some tutors. I would be glad if we could work something on it to contibute to the pyro's forum.

peripherals that i am currently tetsing include RGB LEDs and its control using PWM signals.

And i am also interested to go about interfacing Graphic LCDs , sensors to the CPLD board that i constructed using the Pyroelectro tutors.

Regards,

Sreeram

Sreeram

ThePyroElectro · Posted: Fri Jan 02, 2009 7:33 am Post subject:

Hey Sreeram,

The CPLD board is just a means for getting people started. It's ripe and prime for any application you'd like to stick it into. Unfortunately, I won't be able to write a few more tutorials for it until later on this year.

Is there something particular you'd like to see it do?