Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
21611 Diskussionen

GPIO pins problem in Cyclone III kit

Altera_Forum
Geehrter Beitragender II
1.404Aufrufe

Dear Guys 

 

I bought an altera cyclone III Fpga kit 

and it has 8 GPIO(General Purpose I\O) pins only :( 

and we need more GPIO pins 

 

So, Does anyone know how i can get more GPIO pins??? 

 

and thank you in advace
0 Kudos
8 Antworten
Altera_Forum
Geehrter Beitragender II
675Aufrufe

Which kit?

Altera_Forum
Geehrter Beitragender II
675Aufrufe

it is called 

 

Nios II Embedded Evaluation Kit (NEEK), Cyclone III Edition
Altera_Forum
Geehrter Beitragender II
675Aufrufe

As far as I'm aware of, the only GP I/Os of the 3C25 starter board are provided through the HSMC connector, which is interfacing the LCD Multimedia daughtercard in NEEK. So I wonder, which 8 signals you are counting as GPIO with this kit? According to the block diagram, there are none. But may be I missed something?

Altera_Forum
Geehrter Beitragender II
675Aufrufe

the demo board has some keys and LEDs , this components' pins may be used as input or output pins.  

if you need more pins, you can design a daughter PCB with 180 pins HSMC connector. connect them, then the daughter PCB will extends the GPIO pins number.
Altera_Forum
Geehrter Beitragender II
675Aufrufe

 

--- Quote Start ---  

As far as I'm aware of, the only GP I/Os of the 3C25 starter board are provided through the HSMC connector, which is interfacing the LCD Multimedia daughtercard in NEEK. So I wonder, which 8 signals you are counting as GPIO with this kit? According to the block diagram, there are none. But may be I missed something? 

--- Quote End ---  

 

 

 

it actually has a debug connector (10 pins) on the LCD Multimedia HSMC board , 2 of them are Vcc and Gnd, so the remaining is 8 pins only :( 

 

 

@ johnboat 

Thank you for your help, but i don't know how to use the HSMC bus, it is connected to the LCD Multimedia HSMC board physically
Altera_Forum
Geehrter Beitragender II
675Aufrufe

john is suggesting that you disconnect the LCD daughter board from the C3 board and design a new daugher board with the GPIOs you need. 

 

The HSMC pin out is described by an Altera spec and the Cyclone III starter kit's documentation. 

http://www.altera.com/literature/ds/hsmc_spec.pdf 

 

There a couple of boards that may suit you, though. 

http://www.bitec-dsp.com/hsmc_proto.html 

http://www.nialstewartdevelopments.co.uk/products.htm 

 

 

 

Altera_Forum
Geehrter Beitragender II
675Aufrufe

@rbugalho and johnboat  

thank you for your help
Altera_Forum
Geehrter Beitragender II
675Aufrufe

 

--- Quote Start ---  

it actually has a debug connector (10 pins) on the LCD Multimedia HSMC board 

--- Quote End ---  

 

I don't see any. There's a 10-pin-JTAG connector. It's only purpose is to reprogram the MAX II logic device, if neccessary.
Antworten