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68 Threads found on edaboard.com: Memory Mapped
Hi, I have an existing design where an SRAM is being used. I would like to know if it is possible to replace it with another part number? Both specs are mostly matching. The row and column decoders are but mapped differently to address lines.But total memory size is same.I think the aspect ratios are different. But i think even if the addr
The "AXI4-Stream FIFO" is used to communicate with some other block that has an AXI4 stream interface. The "AXI memory mapped to Stream Mapper" must be used in pairs. They communicate between each other with an AXI4 stream interface but the interface to other blocks is memory mapped in both ends. It is only an "extension".
I am so much confused while configuring the "axi memory mapped to PCIe" core in vivado design suite. how to decide the no of bars in the tab: pcie: bars and also in AXI: BARS. please look in the figure128681 please be more specific, Dumb is sitting here if possible give some notes, other than the xilinx pdf.
Depending on the device you are using, EEPROMs can be mapped into the program space (e.g. the PIC24F08KL402 family of devices) and the commands to put data into the EEPROM space are the same as to write to the FLASH memory normally used for program instructions. (The main difference is that the FLASH memory is intended to have a limited (...)
100 cores of what? Nios relies on the Avalon Bus - usually with the Nios acting as the master and other units connected via a memory mapped avalon interface. This way you can have any existing IP or any other IP you chose to design yourself (as avalon is a straight forward interface, very similar to AXI). NoC is usually a term used for Asic, not
I need to write only numbers (every second) in string on display (memory mapped on 0x8001 adress) which are divding with 2 . I must use counter not delay () for interrupt ... Below is code which i imagine but dont work correctly... PLEASE HELP #include #include typedef unsigned char byte; byte a= {
What is memory mapped IO and Port mapped IO with example?
EMIF ist just a general term for memory mapped (date and address lines) interface, not related to a specific processor, I believe. In most cases we implement an ansynchronous memory mapped interface when connecting a microcprocessor to a FPGA. It refers to SRAM mode of the ARM FSMC. ARM also supports synchronous PSRAM (...)
Most compilers have specific storage class qualifiers for variables mapped to flash, and also require a respective pointer definition. Usually the keyword const or rom qualifies programm memory variables. Technically this required by the processor architecture with separate busses and instructions for data and programm memory.
Hi, For example a processor has 11 address lines. so I connect 1k byte of RAM or ROM. but for 11 address lines,its maximum range is 2k bytes of memory. but what happens if processor sends 11bit address means more than 10 bit address(more than 1k byte access). & what it receives.
While reading dsPIC33F/PIC24H Family Reference Manual i face following problem. The upper 32 Kbytes of the data space memory map can optionally be mapped into program space at any 16K program word boundary defined by the 8-bit Program Space Visibility Page (PSVPAG) register. The Program-to-Data-Space Mapping feature allows any instruction
How Operating system kernel know how and where physical memory and I/O devices like VGA PCI and USB host interface are connected to cpu ? How a kernel developer knows everything that ? There will be different kernels for different mother boards ? How the discipline is followed.
hi. i want to write to sdram of the fpga from my sdcard. i have done the tutorial on writing a text file to sdcard provided by altera and i was able to do it. now, i have a .bmp image in my sdcard and i want to write the data to sdram. my questions are: 1. what memory should i use for my instruction? the on-chip memory or sram? 2. about the timin
I work on a system based on the 8051-family 80C320 processor. It has a 16 address bit 8 data bit bus, plus read/write etc. The IO is all memory mapped. I now want to replace or augment the processor with a new modern processor (an ARM or similar). I still need to use the existing memory mapped peripherals. Ideally I would (...)
differenc between memory mapped IO and Address mapped IO. memory mapped IO uses the same address space for memory and IO devices addressing. What I would like to ask is memory space inside the processor is dedicated for both memory and IO access, Is my (...)
Hi, To write data to a FIFO on FPGA from host through PCIE in DMA mode, by using Terasic PCIE IP, I need to specify the 'memory FIFO ID', how can I find the corresponding ID of a certain FIFO on FPGA architecture? Similarly, if this time the data is written to a memory-mapped memory, how to find the MM-address of the (...)
Hi ALL, Suggest whether CPLD or FPGA....and which vendor requirements are here under: 1) memory mapped IO interface with host controller. 2) interface with DRAM memory 3) parallel and SPI interface with micro controller on board. 4) user Io count of about 140. 5) preferable non volatile version with less power.
Hello , What does memory mapped buses means in general ....??? does any one have any idea ??? With Regard Mohit
What is difference between *memory mapped I/O *I/O mapped I/O *memory mapped memory *I/O mapped memory memory-mapped I/O uses the same address bus to address both memory and I/O devices. (...)
Two options: - Ignore the upper 8 bits of PC, which will make the same ROM appear at every 256 bytes. - Decode the upper 8 bits of PC and only enable your ROM when the correct value (e.g. zero) is matched. If you have any other memories or memory mapped devices connected to the address bus, I presume you'll already have a MUX that could be used fo