Forum Discussion
Altera_Forum
Honored Contributor
9 years agoHow to Interface 10M04SCU169 with Host processor
Hello All,
I am new in this forum and FPGA device exp. I would like to know how we can interface MAX10 series FPGA to External MCU/ Processor How can we decide the IO lines at FPGA side for interfacing I want to interface FPGA using 16-bit Data, 7-bit address and control signals But I don't know what are and how many control signals required for interfacing? (RD/ WR..?) and Where to connect all 16-bit data, 7-bit address and the control signal at FPGA side please, guide us for interfacing pin mapping at FPGA side? I tried to use pin planner but I don't know how to use it? please reply to my quires as soon as possible Thanks in advance16 Replies
- Altera_Forum
Honored Contributor
--- Quote Start --- What micro are you using? How many I/O lines does it have for memory mapped peripherals? Yes - you will be able to connect the micro to any GPIO on the FPGA. There are no specific pins on the FPGA that you must use. Cheers, Alex --- Quote End --- Micro is RX631 from Renesas make and 169 BGA package Could you please explain with example -that how to connect FPGA 10M01SCU to RX631 Micro pls share the other links also Do we required Wait signal for the interface? How many address and data requried ? - Altera_Forum
Honored Contributor
--- Quote Start --- Within limits, however. If the micro has 3.3V I/O, and the FPGA has multiple I/O banks, you must the I/Os populated in a compatible voltage bank. You may be using 1.8V or 2.5V I/O for some other interfaces, so those banks may not be compatible with a 3.3V I/O CPU interface requirement. So some planning will be necessary to choose where you connect the I/Os, but as indicated you will have a lot of flexibility of choice within an I/O bank. --- Quote End --- Thanks a Lot Micro is RX631 169 BGA package from Renesas, Working on 3.3V VDD FPGA is also working on single supply 3.3V voltage RX631 is having 2 WAIT signal, 6 Chip Select, Write and Read signals and 24 address and 16 data linesWe have LAN9252 ESC interfaced to RX631 Micro by 4 address line and 15 Data Line So, please guide us about How to interface FPGA to Micro and LAN9252 to FPGA using address and data line i have attached pin mapping connection diagram
pls. revert back with suggestion and comments
- Altera_Forum
Honored Contributor
--- Quote Start --- What micro are you using? How many I/O lines does it have for memory mapped peripherals? Yes - you will be able to connect the micro to any GPIO on the FPGA. There are no specific pins on the FPGA that you must use. Cheers, Alex --- Quote End --- Within limits, however. If the micro has 3.3V I/O, and the FPGA has multiple I/O banks, you must the I/Os populated in a compatible voltage bank. You may be using 1.8V or 2.5V I/O for some other interfaces, so those banks may not be compatible with a 3.3V I/O CPU interface requirement. So some planning will be necessary to choose where you connect the I/Os, but as indicated you will have a lot of flexibility of choice within an I/O bank. - Altera_Forum
Honored Contributor
What micro are you using? How many I/O lines does it have for memory mapped peripherals?
Yes - you will be able to connect the micro to any GPIO on the FPGA. There are no specific pins on the FPGA that you must use. Cheers, Alex - Altera_Forum
Honored Contributor
Thank you,
But still, i am not clear about the number of minimum I/O line Could you please let me know minimum I/O pins required to interface FPGA and Microcontroller Can I connect any I/O pin to MCU for address, data and control lines OR is there any specific pin for the MCU and FPGA interface? I am not able to run or check pin planner because of not aware and time limit if any sample document with of 10M04SCU169 pls. share link at least share minimum control lines required for interface - Altera_Forum
Honored Contributor
Put the FPGA design together and let Quartus help you.
How many control signals is up to you and the constraints of the processor - i.e. what control signals it has to offer. You mention RD and WR. Fine. If this interface is to be shared with other peripherals then a dedicate chip select (CS) for the FPGA will be required too. If it's not shared then you can do without CS. Once you have an FPGA design Quartus will/can select I/O for you. Depending on any other requirements you have you're probably best guiding it through the pin planner. Keeping the Micro interface to one bank of the FPGA may be advantageous, for example. See this "my first fpga tutorial (https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/tt/tt_my_first_fpga.pdf)" for help with the Pin Planner - although there is plenty of other online help out there too. Cheers, Alex