Re: Can I apply voltage to the ADAU1701 SCL/SDA pins when device is powered off?
Hi, I would like to clarify what you are seeing: With the ADAU1701 powered up, you are seeing a 'stuck low' condition on the SCL line. If you swap the ADAU1701 for a new one, the problem is solved....
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Re: A question about the Rising/Falling Sweep Ramp Rate of AD9915
Hi Steve, You are right. But this can be a small issue.Actually at the SW there is a debug option which helps you to see the registers & somehow i have some question marks about this option, but...
View ArticleRe: Will the ADUC7023 init to default settings if the entire Flash is erase?
From this explanation I cannot figure out the problem and cannot give any feedback, it is not detailed enough and also I cannot see the picture attached. Can you provide more accurate details and the...
View ArticleRe: AD-FMComms2 HDL support for Altera FPGAs
That's the one. As far as I know, the LVDS direction on Altera devices is programmable. What I'm running into is that some FMC pins that your board requires to connect to LVDS pairs don't go to LVDS...
View ArticleADP5024: How to connect an unused Buck regulator
Hello, I was unable to find an answer to this in the datasheet... how should I connect the following ADP5024 pins if I do not want to use the second Buck regulator? VIN2, VOUT2, SW2, FB2, PGND2...
View ArticleADV7625 - OSD Enable and Transitioning between OSDs
Hello,We have been users of the ADV7623 for a number of years. We have developed OSD that does not use the ADI OSD Design tool and instead goes directly to the OSD register map and OSD Ram for OSD...
View ArticleRe: ADuC7061 ADC temperature drift and reference resistor temperature drift
There are 5 ADuC7061. In industrial environments with ambient temperature ranges from −40°C to +40°C is necessaryto use anotherADC.
View ArticleRe: How to communicate with ADE7754 to make an energy meter with PIC18F2520
Hi MARS Yes. For voltage channel, 1000:1 attenuation, using resistor divider, is common. So, it is fine. Please make sure that, even when the line voltage is at its absolute maximum value, it doesn't...
View ArticleRe: How to use SIMD to speed up FIR filter with circular buffering
Hi Mahesh, If I understand the code correctly, the first instruction "s0 = dm(i0, m1);" is NOT a dummy read. You need to initialize both r0 and s0 before SIMD mode takes effect. If r0 is not...
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Re: Level meter not showing correct levels.
Hi Miguel, I suspect that your advice above, asking, " Is it possible that you have some DC going through the signal chain that you are not aware of?", may hold the key to a solution. After...
View ArticleRe: AD-FMComms2 HDL support for Altera FPGAs
Ok -here's what's going on1) Altera does support Vita57.1 for FMC. However, your card is uses the "user-definable" pins. Altera did a somewhat arbitrary assignment of their (non-bidirectional) LVDS...
View ArticleRe: ADV7513 and bt.565 (PAL)
To Alexander, Thank you. Good news is the I2S is working now, previously the I2S input is not correct. But I still have one problem with NTSC, could you please take a look at this...
View ArticleRe: ADV7611 questions
Thanks for the quick reply! The $200 board looks great. When it comes to communicating with the chip, are the ADV7611 and ADV7612 the same (except for the dual port configuration etc)? What I'm trying...
View ArticleRe: ADV7611 questions
Yes, they are the same part except for the input count, just ignore Port B on the 7612 and you'll be fine.
View ArticleBF518F DMA Questions
We are experiencing intermittent issues with data integrity when using DMA. Things generally work great and we are releasing to production very soon, but we have an issue with corruption of data and...
View ArticleRe: ADV7511 has problem to output NTSC 480i
Hi Dave, Thanks a lot. I just talked to our hardware guy. He checked the input to ADV7180, and it is clean. Plus the video output of PAL doesn't have such issue. If there is a noise(ie. ground loop) in...
View ArticleRe: AD9228 resetting conditions
Dear Doug-san Thank you very much for prompt reply. I understood the register 0x00 does not make default register settings. So if we try to put default setting then we need to power-up again.or we need...
View ArticleRe: An AD9361 no-OS Driver Issue
Hi Dragos, Thanks for your reply. But I think I have found the reason. That is because I used a wrong SPI baud rate when I ported this no-OS driver into WinCE. When I decrease the baud rate, everything...
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