Forums Search for: SDRAM
EMIF read and SDRAM
inHi All I'm trying to interface a 8-bit camera to the C6711 by using the EMIF. I'm wondering if anyone can help me to get EMIF,...
Hi All I'm trying to interface a 8-bit camera to the C6711 by using the EMIF. I'm wondering if anyone can help me to get EMIF, SDRAM and interrupts to work together. As soon as an interrupt occurs I set a flag, and then return to main. In main there is a while loo
SDRAM Interface problem
inHi, this may be board related problem but i was clue less on this. needed help. I am using 6711, code running internally. CE0 space is ...
Hi, this may be board related problem but i was clue less on this. needed help. I am using 6711, code running internally. CE0 space is used for SDRAM, CE1 for Flash, CE2 for SRAM and CE3 with a 3to8 decoder for interfacing i/o. In i/o devices like UART, ADC are interfaced parallally, it inclueds some other leds and digital sensing inputs. And th
QDMA and Cache C6713
inHi, I'm using the QDMA on the C6713 - It seems that I have to do a Cache_clean() of the SDRAM before each copy with the QDMA. (The...
Hi, I'm using the QDMA on the C6713 - It seems that I have to do a Cache_clean() of the SDRAM before each copy with the QDMA. (The copy is done from the IRAM to the cachable SDRAM) Does it make sense ? I couldn't find it in TI manuals. Thanks Meir.
Memory problems
inHello all: I have been observing very random memory errors in the data I am writing out of a 6711-DSP's (external) SDRAM....
Hello all: I have been observing very random memory errors in the data I am writing out of a 6711-DSP's (external) SDRAM. The few culprits that I can shortlist are: * EDMA transfers into circular buffer (in SDRAM) holding data for the PCI bus to take * Board
SDRAM corruption
inWorking on bringing up a TMS320DM6446 custom board. SDRAM is MT47H64M16HR-3 which are the new versions of the MT47H64M16BT-37E chips on the TI...
Working on bringing up a TMS320DM6446 custom board. SDRAM is MT47H64M16HR-3 which are the new versions of the MT47H64M16BT-37E chips on the TI DaVinci Eval boards. When we perform writes, the value gets written into a 16 byte range but the bytes appear transposed within the 16 byte range. A write of 0xFFFFFFFF might be displayed as 0x00FF00FF 0x00000000 0xFF00FF00 Hav...
Reading from SDRAM in c6711DSK
Hello, I'm a student doing a project (an MP3 decoder) on a dsk6711 TI Board with the audio daughtercard A/D converter. ...
Hello, I'm a student doing a project (an MP3 decoder) on a dsk6711 TI Board with the audio daughtercard A/D converter. I'm having problems with loading an .mp3 file to the SDRAM memory... what should i use to send a .mp3 file directly from CodeComposer
Re: c6711 DSP/BIOS bootloader problem
Hi, I have a clue about what may be wrong. I suppose the problem is that the SDRAM is not stable at the time when the second level bootloader...
Hi, I have a clue about what may be wrong. I suppose the problem is that the SDRAM is not stable at the time when the second level bootloader transfers the data from the FLASH to the SDRAM. All the necessary settings are properly done, but there are some minor errors sometimes. After a detailed analysis over the working NON/BIOS bootloader I have identified the line after which the RAM becomes...
6713 Flash/SDRAM
inHello, I am very new to DSP and the C6713, but I seem to be picking it up pretty fast. I have a question regarding the...
Hello, I am very new to DSP and the C6713, but I seem to be picking it up pretty fast. I have a question regarding the connection of SDRAM and a Flash chip to the C6713. The Spectrum Digital DSK board uses an Altera PLD as the glue logic. I am designing a board that uses
Re: Re: How to allocate a buffer in SDRAM with compound linker command file or DSP/BIOS Configuration Tool
Fab- Thanks for documenting your solution, that's helpful for the group. Yep, Richard is pretty good. -Jeff f...@yahoo.it wrote: > > ...
Fab- Thanks for documenting your solution, that's helpful for the group. Yep, Richard is pretty good. -Jeff f...@yahoo.it wrote: > > Hi to all. > > I am a student and I am trying to learn using DSP with th eDSKBoard 6713. > > I have a problem when I declare an array ( buffer1 ) in SDRAM, i.e. in the section ? .my_section ?. > > What I have done is: > > > > #pragma DATA_SECTION
Declare large array in SDRAM
inHi I am using C6713 and need to declare a large 2D array, about 300 x 400 Uint32. How can I declare this array in SDRAM or other space which...
Hi I am using C6713 and need to declare a large 2D array, about 300 x 400 Uint32. How can I declare this array in SDRAM or other space which can store it, instead of internal ram? Thank you for any help on this simple question !
cannot allocate .image in SDRAM (page 0)
inHi all, Can anyone tell me how can I solve this: TMS320C6x COFF Linker Version 4.00 Copyright (c) 1996-2000 Texas...
Hi all, Can anyone tell me how can I solve this: TMS320C6x COFF Linker Version 4.00 Copyright (c) 1996-2000 Texas Instruments Incorporated >> cannot allocate .image in SDRAM (page 0) >> errors in input - img_proc.out not built Build Complete,
memcpy vs. EDMA
inHi, I'm working with a 6713B. I have a situation where src and dst of memcpy point to ext. SDRAM. When I simulate this and do assembly-single...
Hi, I'm working with a 6713B. I have a situation where src and dst of memcpy point to ext. SDRAM. When I simulate this and do assembly-single steps through memcpy I see that every step a data transfer is made. What if a EDMA wants to access ext. SDRAM at the same time? Which one is stalled: EDMA or CPU? TIA Gustl _____________________________________
Accessing SDRAM in Boot Flash Mode
Hi, I am working on the development of a system using C6713 DSP that has to boot from Boot Flash. I am intending to run the DSP for couple of...
Hi, I am working on the development of a system using C6713 DSP that has to boot from Boot Flash. I am intending to run the DSP for couple of hours and saving the data in SDRAM. I am wondering how would I retrieve the data to analyse them in Matlab ? I would appreciate any help dealing with that. -BAS
cmd file and library problem
inHi guys, We are working on a prototype platform with an C6414 DSP which has 1MB of heap, and our platform addionally has 16MB of external...
Hi guys, We are working on a prototype platform with an C6414 DSP which has 1MB of heap, and our platform addionally has 16MB of external SDRAM. By now I've written programs which are small enough to fit into the range reserved for the program and I mainly used the SDRAM for swapping in and out of larger memory blocks - that works fine. Now I want to upload a program which includes two library...
The Full Monty - Accessing 256MB of SDRAM per CE space on 6x11?
Hey folks! Wondering if anyone has any experience here... The datasheets for the 6211/6711 have this footnote in them on the...
Hey folks! Wondering if anyone has any experience here... The datasheets for the 6211/6711 have this footnote in them on the Memory Map Summary: "The number of EMIF address pins (EA[21:2]) limits the maximum addressable memory (SDRAM) to 128MB per CE space.
Slow Runing in SDRAM
inHi all I am using a DM640 based board. when I run my simple program(LED Blink) in SDRAM(MT48LC4M32B2 16Mbyte) it is around 100...
Hi all I am using a DM640 based board. when I run my simple program(LED Blink) in SDRAM(MT48LC4M32B2 16Mbyte) it is around 100 times slower than when in internal SRAM(l2 cache). (the amount 100 is gathered with the aid of oscilloscope) my simple program consists of two loops one in another. if I define loop variables as "register type" the result is about %20 persen...
SDRAM
Hi to all... I got n serious accident 15 days back. so could not explain my problem last few days.. sorry... I checked my setup today again.....
Hi to all... I got n serious accident 15 days back. so could not explain my problem last few days.. sorry... I checked my setup today again.. the problem is still as it is... I did many experiments that I am going to explain, please suggest me some thing from these experiments Step:-1 I powered on my Target Board.. and run the program for SDRAM test... Step:2 I got the data mismatch ...
regarding edma in dm642 evaluation board
Hi, I am trying to set up a frame synchronised edma from video port to SDRAM. For the time being, i have to do it using a dsp initiated...
Hi, I am trying to set up a frame synchronised edma from video port to SDRAM. For the time being, i have to do it using a dsp initiated event. Acc to memory map, 0x80000000 to 0x9000000 is SDRAM. But when the destination address is anywhere between 0x80000000 and 0x80010000, the dma stops after 170 byte tranfer. The rest is tranfered incompletely. When we map any other destination from
RE: EDMA - EMIF ---IMP transfer issue
Dear All, I am trying to transfer bits (no frame buffer) straight from an 8pin digital output of a CMOS camera to the external SDRAM of on the...
Dear All, I am trying to transfer bits (no frame buffer) straight from an 8pin digital output of a CMOS camera to the external SDRAM of on the 6713DSK. I understand that I have to go via the EMIF of the DSK, but can someone explain to me how i can do the transfers from the camera to the SDRAM using EDMA controls... I am currently sending 8 bit YUV out of the camera (res 160x120) any help i...
Re: PCI data transfer (dm642 DSP)
Geckook Xu- > Thank you for your idea. > I try internal mem in this time, I can read the data from PC (host). Ok that's good...
Geckook Xu- > Thank you for your idea. > I try internal mem in this time, I can read the data from PC (host). Ok that's good progress. > But when I use SDRAM to read data, It is not work. > I still can write data from SDRAM to PC (use API PCI_xfrStart(PCI_WRITE);). > I try to init the emif, but didn't succeed. > > Do you have any advice? First you have to verify EMIF init and SDR