Forum Post: RE: SPI INTERFACE IN LM98722
Dear Mr Hooman Hashemi After Power on we are using this code for enabling the external crystal we are using 5 Mhz crystal as the input clock P4OUT&=~SEN; ////Chip Select __delay_cycles(100);/// 6...
View ArticleForum Post: RE: Ultrasound Imaging using 40-100KHz transducer array
Hello Yuan, You are correct and I apologize for not reading your post more carefully. The lowest output frequency of the LM96570 is 625KHz (page 19 of the datasheet). The PLL output frequency is 160MHz...
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
Hi Gokul, Please make sure you are waiting at least 50ms or longer, if not already? From page 86: "After either starting or stopping INCLK, or after Software Reset (Register Page 0, Address 1, [4:3]),...
View ArticleForum Post: RE: Are there any ways to faciliate the AFE5809 configurations?
Hi, Chuck: Now i have downloaded the software from the above link, and successfully installed it. Upon the AFE5809EVM GUI opened, the software pops up "Device Not Found" and "Handle In Use", After OK...
View ArticleForum Post: RE: Ultrasound Imaging using 40-100KHz transducer array
Hi Hooman, Thanks for the answer. So do you know any ICs that can work at the frequency I have specified? They do not necessary need to be highly integrated, but do need to serve the purpose. Regards.
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
Dear Hooman we have waited for more than 1 sec but the crystal is not loading here with i am attaching the circuit pls let us know if there is any issues in the circuit
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
The inclk from uC line has been isolated there is no connection between the LM98722 and the uC
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
Hi Gokul, Can you please also supply your board layout image around the area of the XTAL? Regards, Hooman
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
Hi Hooman C17 and C18 are Loading Capacitors , 18pF , and Y1 is 5 Mhz
View ArticleForum Post: RE: LM96530 RX switch RREF voltage?
I know that its output. I want to change this current in full system - for analyze changes. And connect digital potentiometer to this pin, for example AD5274. I need to know maximum voltage at this...
View ArticleForum Post: RE: LM96530 RX switch RREF voltage?
Hi Roman, The RREF pin is a bandgap voltage, about 1.2V. Let’s say max is 1.5V. Regards, Hooman
View ArticleForum Post: RE: Ultrasound Imaging using 40-100KHz transducer array
Hi Yuan, For the devices I'm familiar with (LMxxxx Part Numbers), we don't have a suitable solution. I'd have to defer the answer to other E2E participants to see if they can offer a solution to your...
View ArticleForum Post: RE: Ultrasound Imaging using 40-100KHz transducer array
Hi Hooman, That would be very helpful. If there is any suggestion, let me know. Thank you.
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
Hi Gokul, The layout / schematic look fine. Any chance you can try a higher frequency XTAL or some sort of external differential clock source to debug the board otherwise? How are you looking for the...
View ArticleForum Post: How to Enter into AFE5809EVM GUI simulation mode without real...
Hi, guys: Upon the AFE5809EVM GUI opened, the software pops up "Device Not Found" and "Handle In Use", After OK pressed, the software shut itself down. I guess it's searching for the EVM board, while i...
View ArticleForum Post: RE: TX-SDK-V2 EVM Power problem at banana connector cable
Yes, In TX-SDK-V2 board, short circuit is there betwee ground and 1.8V pins. And the lm96550 pulser IC's gold color is turned into white color. Why?
View ArticleForum Post: TX-SDK-V2 EVM has problem
In TX-SDK-V2 board, short circuit is there betwee ground and 1.8V pin. And the lm96550 pulser IC's gold color is turned into white color. Why?
View ArticleForum Post: RE: SPI INTERFACE IN LM98722
Dear Hooman We have not tried the higher frequency XTAL oscillation we will try it and let you know in a short while Gokul
View ArticleForum Post: AFE5818 EVM GUI
AFE5818 EVM GUI has VCA block configuration, but there is no LPF and ADC configuration block. How to configure these block?
View ArticleForum Post: RE: TX-SDK-V2 EVM has problem
Hi Subash, Sounds like you are saying the LM96550 on your board is damaged. The cautions for power supply sequencing in the User Guide (within the zip file below) should be followed strictly to avoid...
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