Core Transfer from IDP_FIFO
Hello I'm using an ADSP-21369 EZ-KIT Lite, trying to understand how to make the core transfer from the idp fifo.While with dma I've found the right registers and settings (ram addressing, count,...
View ArticleAD8475 introduces too much noise, any suggestions?
I'm driving an LTC2440 24 bit sigma delta ADC with an AD8475 funnel amplifier. If I short the ADC inputs together I measure about 7 counts RMS noise, which is about 2uV RMS. This matches my expectation...
View ArticleSplit Screen observed while capturing PAL M using ADV7181C
Hi,I am facing split screen issue in the captured video, when my input resolution is PAL M. (Composite video standard Used in Brazil).I am using ADv7181C chip. To brief about this issue: I was...
View ArticleRe: ADV7623 OSD ypos limited in 1080P?
Hi Chris, You can add reference to vertical offset since this can be used to adjust the display area of both top and bottom position to have only a few rows in top and bottom that are not used.Refer...
View ArticleAD5933 impedance measurement without DC offset over the impedance
Dear, we would like to measure an impedance between 100 KOhm and 500 KOhm butit is not allowed to have a DC voltage over it. Is it possible implement a DC less measurement with/without extra external...
View Articleadv7612 configuration for 720p60
Using custom board with adv7612 which gets 720p60 1. How to make sure that adv7612 outputs correct video?Reading HDMI reg 07 gives x85 where DE is not kocked. 2. The laptop which is my HDMI source not...
View ArticleRe: AD8475 introduces too much noise, any suggestions?
Hello Oliver, Perhaps you could try throttling down the AD8475's bandwidth with a cap directly across the ADC differential input (after the 47 ohm resistors). 0.1uF might be a good starting...
View ArticleRe: SS 3.9!!!
Hi Skfir, Thanks, it's a pleasure to help with your applications since you're always so appreciative. Actually I'm quite ordinary. Bob
View ArticleRe: Camera interface to HDMI port
HI Guenter, Well the update is we could see some activity on clock and data lines at HDMI port pins of ADV7513. But there is no video display on LCD TV. We have YUV422 output from camera and want to...
View ArticleHow could I do a pulse count in ADUCM360?
Hi All, Could I do a pulse count in ADUCM360? Thanks.
View ArticleRe: ADV7393 usage
1) Keep 1.8V <= 3.3V as the power rises. If you look at our reference designs you will notice that the 3.3V and 1.8V come up at the same time 2) I am not sure what the exact question you are trying...
View ArticleRe: LINUX WITH HDMI VIDEO OUTPUT ON ZC702 BOARDS booting stucked
Hi, Lars, When I build the devicetree, I use the command: make zynq-zc702-adv7511.dtbReference is download form...
View ArticleRe: ADV7842：In using Auto Graphic Mode, Vsync output was stopped at Freerun.
Hi Aimpoint, Can you confirm if syncs completely stop?Does this happen with more than one source?If you try using a standard 1080i script do you see the same affect ? Ray
View ArticleRe: Bottom Black bar problem(22lines) of ADV7179 Output
Hello, Did you set VFORMAT to 4? Have you looked to see if the V-Sync moved in relation to F to confirm if the settings changed? Dave
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Re: Audio and encrypted problems about ADV7623
Question 1ADV7623 SPI interface is used for OSD function, how can I use SPI interface to configure E - EDID, and could you please tell me the E - EDID SPI interface details of the order. Question 2Have...
View ArticleRe: Split Screen observed while capturing PAL M using ADV7181C
HI Saurabh, Unless I'm reading your schematic wrong it looks like the CVBS in is routing to two different devices and you've no stuffed the tie to ground of the CVBS connector. This makes me wonder if...
View ArticleAD5755-1 vout and iout
Hello all.I am currently working with AD5755-1 and i would like to ask if it is possible to tie Vout and Iout.This way i would not need jumpers to sell voltage output or current. thanks in advance.
View ArticleAD7763 Filter Download Question
Hi, I am having problems downloading filters to the AD7763. I have tried the example in the datasheet (in Table 16) so that I know the checksum is correct but I am not getting the FILTER_OK or DL_OK...
View ArticleRe: AD8553
I am attaching a circuit design schematic that I am trying to implement. The problem seems to be getting the gain that I set and linearity is suspect. Could I get your analysis, please? My objective...
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