Re: HDL descriptions of AD9467FMC reference design
yes i have calculated the coefficients from matlab fdatools. now i need to implement a FIR algorithm on FPGA, i have searched about this implementation and found one more thing that i can use FIR...
View ArticleRe: BF537 bfin_reset() in reboot.c hangs after a cmdline reboot
Hi Steven, As you can see from the history of this thread, we are unable to reproduce the reboot issue reported by the original owner of this thread, and I believe your situation may be different from...
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Re: Re: 7816 Reactive Energy measurements with nasty loads.
Hi hmani, Actually, my spreadsheet multiplied the 7 current harmonics by the fundamental voltage, which I agree is not what the IEEE definition of Reactive Power calls for. Your latest question...
View ArticleRe: High-speed DAC for 8-bits
Danf, Thank you for the help. I have been looking at the AD9748, for which there is an evaluation board (EVB) available described in the datasheet. However, there is not enough information about the...
View ArticleRe: Libraries instances being created in all the processes while using FDPIC ABI
Hi Lalitha, I would advise you to open a discussion in GNU Toolchain for Blackfin too to get more expert comments from our toolchain team.
View ArticleRe: AD73360L - Offset
Hi Quintin, I'll move this thread to the Energy monitoring and metering community. Someone here should be able to respond to your inquiry. Regards,Jonathan
View ArticleADV7604 power sequence
Hi, I has one question about ADV7604 power sequence. From the hardware manual of ADV7604, it mentioned that "there should be a 400ms delay between 3.3V supplies being enabled and 1.8V supplies being...
View ArticleIs it necessary to load the contents of DATA RAM while initializing ADAU1761?
In our current design, an MCU is there to initialize ADAU1761 through I2C, with all the necessary register contents. We found the following 2 questions: 1/ In the current DSP initialization table, a...
View ArticleRe: AD9833 Vout voltage
Hello Liam,I am using AD9833, now I have a question about how to set VOUT, I got the equation, VOUT= VREF× 18 × RLOAD/ RSET× (1 + (SIN (2π (FREQREG ×fMCLK×t/228+ PHASEREG / 212)))) from DS at page 18...
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Re: ADE 7758: 41 bit energy register
Hi hmani,I understand that LSBs won't improve accuracy. (2^41)-1 = 2.199e12 and (2^24)-1=16777215. So obviously LSBs won't affect the value. But suppose I want to test an energy metering circuit made...
View ArticleRe: [ADV7511W] How much time does it take from video/audio input to output TMDS?
Hello, Thank you very much. I understand as follows:Video delay is 12-50 pixel clocks in ADV7511W.Audio delay is at most one horizontal line in it. Doesn't the delay depend on the format 720p or 480p?...
View ArticleRe: ADV7280-M Driver
we have developed the Linux driver for ADV7280M on TI OMAP4 platform, the operating system running on OMAP4 is Ubuntu 12.04. The demo is avaiable here:capturing cvbs data on omap4 | XFengCheWe provide...
View ArticleADV7626(5) powersaving ...
Dear, Sir,We now use ADV7626 for three projects, 8x8matrix, hdmi extender, 4x4matrix. We have several questions here,1. Is there some way to get a more powersaving application for ADV7626? For ADV7626,...
View ArticleRe: How to calculate the parameters for "RMS compressor"?
Hi John, As you said,I have noticed this problem.So,instead of getting the max over the samples in a block,I am tending to detect the RMS value of the samples in a block.Whether this way is available...
View ArticleAnonymous memory being created without any dynamic memory allocation
Hi I was running the following code in BF609 with buildroot distribution. When I see the maps of this process, I found 3 regions of anonymous memory. I haven't done any dynamic memory allocation in my...
View ArticleRe: AD7609 requires 100ns delay for every conversion of 8-channels?
Hi Lakshmi, Thank you for the inputs. On the AD7609 dataheet, Table 3 p.8, there is a timing for the Data Access Time after /RD falling edge, which vary according to the level of Vdrive. This...
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Re: Libraries instances being created in all the processes while using FDPIC ABI
I'm sorry for not attaching the maps. Attachment is made here. I also wanted to know why anonymous memory mapping is created when I don't do any dynamic memory allocation. Following is my code. I ran...
View ArticleRe: How to communicate with ADE7754 to make an energy meter with PIC18F2520
Hi MARS I can fill-in for DLath and help you further with this thread. One correction in the formula that I would suggest is that you use LVAENERGY instead of VAENERGY. For computing the PF using...
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