Hi!
I have ADC16DX370EVM, and i connect LMK04828 spi (3-wire mode) to the MCU, but no responce from it. JP2 is shorted for disable bus transceiver sn74AVC4T774, so A and B ports in Hi-Z state, but write and read operations was ignored by LMK04828. Can you say, what's wrong in my spi transaction. When spi line in read mode, line in pull up state.
Hi,
1. Have you verified that you can program the LMK using the ADC16DX370EVM GUI and board as is to make sure the part (LMK) works?
2. In addition to shorting JP2, can you DNI the following resistors so that the translator chip doesn't interfere:
3. Are the waveforms in your post from the SPI pins on the LMK side. Please confirm if it meets the expected voltage levels.
4. Can you write to the PDN register (0x002) and see if the current consumption goes down. Writing a "1" will power down the chip. This will be an easy verification to ascertain SPI functionality.
Regards,
satish.
