Hi Engineers from TI,
ADS7952 with QFN package, we measured SCK CE MISO, all waves right compare with Mercury system, but MOSI signal without channel information.
So could you give us any suggestions?
Thanks
Hongjin
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hi Engineers from TI,
ADS7952 with QFN package, we measured SCK CE MISO, all waves right compare with Mercury system, but MOSI signal without channel information.
So could you give us any suggestions?
Thanks
Hongjin
Hi Hongjin,
Please check the value of DIO4 in the Mode Control Register. If set to 0, you should be getting channel address on DO15-DO12. If it is set to 1, you will get GPIO status.
Hi Tom,
Thanks so much, we double confirmed DIO4 in the Mode Control Register is 0.
Do you have other suggestions or maybe we can book a meeting for detail discuss.
Thanks
Hongjin
Can you send screen shots of your SPI lines so we can double check from our end?
Hongjin,
I would need screen captures that show the actual waveforms associated with /CS, SDI, SDO and SCLK. Can you please provide that? Oscilloscope or Logic Analyzer will do, however, oscilloscope is preferred.
Hi Tom,
Do know the affect of NC pins? now in our design the 4 NC pins do not connect with AGND, they are floating.
I tried to connect them to AGND, but too difficult.
thanks
Hongjin