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Thank you for the link.
It looks easy and fine, even though cannot be designed without any test on prototypes before...
Do you have anything else?
Thank you once more.
antenna detector
Hi,
Does anyone know how it is possible to implement a low-cost effective antenna detector circuit for GSM, UMTS and GPS technologies?
I need material, whitepapers, and possibily reference designs.
Thank you in advance.
N.
pcm codec pdm
Hi,
does anyone is aware about the possibility to implement an audio low-cost solution by means of a simple pulse-density modulation (PDM) followed by a LC pass band filter (it could even be implemented by the loudspeaker itself)?
I am interested in avoiding buying a PCM codec...
Re: battery charger
Could someone suggest me a relevant application note or description document for a valid and commonly used implementation of circuit of which at point b?
Thank you.
N.
battery charger
Hi,
Simple question.
I am designing a battery charger circuit for a system whose power consumption is around 400mA peak and 300mA average.
The battery charger (for Li-Ion) is able to provide a current (during the constant current phase of charging procedure) which is 250mA.
To...
Hi all,
Does anyone know some vendors which provide for black/white screens?
I am looking for a small screen which can work with ARM9 processors, the same kind of screen mounted on mobile phones or even cheaper as I am looking for a black/white one.
Thank you for your helpfulness.
Regards,
N.
Hi all,
Does anyone know whether it is possible or not to address the issue in subject?
I have read something in RMII documentation and some components datasheet, but actually I cannot find anything detailed.
Could anyone help me?
Thank you for your cooperation.
N.
Hi all,
Does anyone know whether it is possible or not to address the issue in subject?
I have read something in RMII documentation and some components datasheet, but actually I cannot find anything detailed.
Could anyone help me?
Thank you for your cooperation.
N.
Hi,
From what I understand you are looking for a module which has MAC+PHY (RF front end) already implemented. If that is the case, I can help you and suggest something.
Please, could you specify your system architecture and business? Which company are you from and what is the forecast of the...
Re: JTAG PROBLEM
Hi,
if it is a problem of TDO or TDI, it depends on components/layout: they could be bad mounted or broken.
Actually, sometimes I experience problems in VIO compatibility between host processor and JTAG adaptor. I am used to inserting diodes in NTRST and RESET signal lines in...
Hi,
In my application, I would like to have a USB interface for a device which uses a SDIO one. I was thinking to put a FTDI chip in the middle and programme it but actually I do not know if it is possible. With UART and SPI buses, it is possible to have a FTDI which works as a USB adapter...
Hi,
Is someone able to solve any doubt I have about the circuitry which must be set between the LAN PHY chip and the RJ45 connector?
I know it is necessary to set a transformer, and I guess it works as an isolation protector against voltage peak coming from the RJ45 connector, but actually I...
lan phy transformer
Thank you.
But let me understand the purpose of those resistor:
Is 150 Ohm differential impedance due to any constraint of LAN protocol?
Why exactly 150 Ohm? Any relation with PoE?
Thank you in advance.
N.
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