Forums Search for: SDRAM
Use of IRAM and SDRAM in DSK6711
Hi everyone, I am developing a real time program with my DSK6711. IRAM is not large enough to locate all my code and data....
Hi everyone, I am developing a real time program with my DSK6711. IRAM is not large enough to locate all my code and data. Therefore I have to make use of SDRAM, which is much slower than IRAM. Can anyone give me some advice about improving performance using SDRAM? Should I co
How to place .lib into SDRAM ??
Hello, First:is there any possibility to put a whole libryry e.g. rts6701.lib into a section in SDRAM, whereas the .text-section...
Hello, First:is there any possibility to put a whole libryry e.g. rts6701.lib into a section in SDRAM, whereas the .text-section remains in IRAM ??? or how can I place at least some less important of the .obj of the library into SDRAM Second: Where (that means in .cmd ??? => on wh
SDRAM memory access with 6711 DSK
inHi, I'm having problems accessing SDRAM in a reasonable time. I read on the periperal guide that consequent access to SDRAM should...
Hi, I'm having problems accessing SDRAM in a reasonable time. I read on the periperal guide that consequent access to SDRAM should happen in bursts of 4 words. I understood they are talking about 32-bit words. Is this correct? Because I tried to look at the signals (Chip enable,
EMIFA conflict on DM642
inHi all, I've a conflict problem on my board, this is the situation: I've a DM642 DSP, SDRAM and FPGA on my board. SDRAM is mapped on EMIFA...
Hi all, I've a conflict problem on my board, this is the situation: I've a DM642 DSP, SDRAM and FPGA on my board. SDRAM is mapped on EMIFA CE0 FPGA is mapped on EMIFA CE1 I use EDMA controller to transfer my data from FPGA to SDRAM, with this configuration: opt: 0x44BE2001h // Block Synchronized 2D-to-2D Transfer src: 0x90000000 // FPGA address cnt: 20 dst: 0x80001000 // SDRAM addr...
SDRAM on 6713DSK
inHi, Simple question: how to send something to SDRAM on DSK6713 board? --nstn--
Hi, Simple question: how to send something to SDRAM on DSK6713 board? --nstn--
how can i allocate a heap in SDRAM using .cdb file
inhello! i'm using TMS320C6416 board doing a project which has to use so much sapce, so ISRAM may not be enough, then i use the SDRAM, but i'm just...
hello! i'm using TMS320C6416 board doing a project which has to use so much sapce, so ISRAM may not be enough, then i use the SDRAM, but i'm just using the .cdb file to configure the pro, no assembly source file. thus , i don't no how to add the section, e.g. "my_sect", to the SDRAM, it's suggested by many friends that when a section is created, lines about it must be added to the .cmd, the comma...
EDMA transfer elment size
Hello all! I have to program data transfers of consecutive blocks between a peripheral and SDRAM using EDMA on 'C6711 (in both...
Hello all! I have to program data transfers of consecutive blocks between a peripheral and SDRAM using EDMA on 'C6711 (in both directions). The peripheral (WIZnet i2Chip W3100A) has an 8-bit async interface, and SDRAM is 32-bit wide. As far as I know, working with SDRAM is mor
Program is slow in SDRAM
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...
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) can anyone guide me where is the fault? some parts of my real program(ndk_1_92_eval) need to run in SDRAM. thanks in advance. regards sha...
Problem in loading the code to SDRAM...
inHello all, I am using CCS2.0 for C6211 based board(our own board) and Spectrum Digital Drivers for XDS510pp PLUS Emulator....
Hello all, I am using CCS2.0 for C6211 based board(our own board) and Spectrum Digital Drivers for XDS510pp PLUS Emulator. I am facing Problem in downloading my code to SDRAM. In Our board SDRAM(4MB) is interfaced to CE2 Space(A0000000 - AFFFFFFF)
using the RS 232 port and SDRAM
hi, I have written a DSP code that accepts data from a file on the PC. However, now i want my code to take data from the SDRAM. The data in the...
hi, I have written a DSP code that accepts data from a file on the PC. However, now i want my code to take data from the SDRAM. The data in the SDRAM will come via the RS 232 port. I dont know much about DSP. Please tell me how i can extract data from the RS 232 port and store it in the SDRAM. Thanking you.
C6722 EMIF error signal
inHI My system is a C6722 DSP with a Micron MT48LC4M16A2-75 SDRAM. Everything works fine now but some problem with the SDRAM, there are sometimes...
HI My system is a C6722 DSP with a Micron MT48LC4M16A2-75 SDRAM. Everything works fine now but some problem with the SDRAM, there are sometimes a undesired bit (or sometimes more than one) appeared when I read the data from SDRAM in the CCS. I inputed a sine wave (1KHz) into the ADC, the dMAX then copy it into the internal memory. My C code then copys the data from the internal memory into t...
how to create data section in IRAM using tms320c6713
inhi,? i am trying to execute a code w.r.t speech recognition on tms320c6713 kit in ccsv3.1 . the following code is a part of it. #define FS...
hi,? i am trying to execute a code w.r.t speech recognition on tms320c6713 kit in ccsv3.1 . the following code is a part of it. #define FS 10000 #define PTS 256 #define PI 3.14159265358979 #pragma DATA_SECTION(x,".SDRAM$heap") ? #pragma DATA_SECTION(spec,".temp")? #pragma DATA_SECTION(nx1,".SDRAM$heap") #pragma DATA_SECTION(nx12,".SDRAM$heap") #pragma DATA_SECTION(win,".SDRAM$heap") #pra...
SDRAM Bandwidth
inHi all, I'm new in DSP. Could you please help me in finding the max SDRAM bandwidth in a C6415 DSP? Something else, I want to connect my DSP...
Hi all, I'm new in DSP. Could you please help me in finding the max SDRAM bandwidth in a C6415 DSP? Something else, I want to connect my DSP to a FPGA through EMIFA and use EMIFB for transfers between DSP and SDRAM. If I use DMA for both transfers, could these transfers be done simultanously? Best Regards, Dakys
SDRAM problem on custom board
inHello All; I have designed my own board around C6713B DSP. I am using all EMIF chip selects to connect, a M48LC4M32B (same chip as the DSK...
Hello All; I have designed my own board around C6713B DSP. I am using all EMIF chip selects to connect, a M48LC4M32B (same chip as the DSK board) SDRAM (CE0), a flash (CE1), two ASRAMs (CE2) and finally a FPGA on CE3. A third party have populated eight of these boards. My problem is that on three of the boards, I cannot run my program in SDRAM, either right away I get the error =E2=80=9CD...
SDRAM doesn't work with c6416
hi,all.I connect c6416 EMIFB(the clock is ECLKOUT1, 50MHZ) with SDRAM MT48LC4M16A2(7.5ns).The question is I cann't read or write the sdram...
hi,all.I connect c6416 EMIFB(the clock is ECLKOUT1, 50MHZ) with SDRAM MT48LC4M16A2(7.5ns).The question is I cann't read or write the sdram absolutely.the data in the address 0x60000000 has not a change.If I write a '0' to the address repeated ,a sawtooth is probed in the data bus ,and all control signals like ce ,oe, we, CAS, RAS, almost have the same wave.why?How to solve the problem?
SDRAM Interface on C6416 DSK
Hi all, I believe many of you have been working with the C6416 DSK which has a 16Mb SDRAM. I want to know the width of the...
Hi all, I believe many of you have been working with the C6416 DSK which has a 16Mb SDRAM. I want to know the width of the SDRAM interface on the DSK, is it 32-bits wide or 64-bits wide? Also, has anyone worked with a 32-bit wide SDRAM interface? What is the performance of the
Problem with single byte access to SDRAM
inDear Experts, I have designed a board which has a DM640 interfaced to Micron SDRAM MT48LC4M32B2. My problem is that if I do a write and...
Dear Experts, I have designed a board which has a DM640 interfaced to Micron SDRAM MT48LC4M32B2. My problem is that if I do a write and readback from my SDRAM using unsigned int pointers, then the readback works ok. If I instead do the readback using unsigned char pointers, then the readback doesn't work. The data is apparently not being written correctly in this case as checked through V...
CACHE in 6713
inHi all I wanted all data in the internal memory and moved the .text section and .data section to SDRAM which in CE0 space. Now when i...
Hi all I wanted all data in the internal memory and moved the .text section and .data section to SDRAM which in CE0 space. Now when i declared a global buffer it got alloted in SDRAM area. My L2 memory configuration is 192K-internal memory and 64-cache. Now coming to the issue, I was trying to EDMA with this SDRAM memory location as the source
SDRAM Solved
Hi to all... My SDRAM is now working... Reason of working now is as follows. I was implementing the Switching using the Digital Switch IC...
Hi to all... My SDRAM is now working... Reason of working now is as follows. I was implementing the Switching using the Digital Switch IC MT8980, that I had tested earlier to the SDRAM on my Master Card (DSP Processor) earlier, whether the switching was taking place but voice samples are not there in time slots, whether small noise was there in the time slots. Today on another same card, I ...
SDRAM access too slow
inHi,All. I need your help about the access speed of a 100M 32-bit SDRAM through EMIF. Currently I'm using the C6727 dsp and the...
Hi,All. I need your help about the access speed of a 100M 32-bit SDRAM through EMIF. Currently I'm using the C6727 dsp and the EMIF input clock (SYSCLK3) is set to 100M. If I want to copy a block of 512 points of 32-bit integer from the internal RAM to my SDRAM address 0x8000 0000, the C code could be like below: int buffer[512]; int * pSDRAM=(i...