Ooopss:
(3b) correction:
3b) Even if my FPGA deserializer is not OK, then the analogue input finger touching should not toggle any of the FPGA (11:0) outputs when I switch the device into the test mode (2a). However, when I touch a finger the analogue input of the AD9272, perform any SPI write operation, required changes makes no effect. A "finger noice" is still visible on scope, it means that the device has not been switched into the test mode. Please Help !!
Regards, Mariusz