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CDCE62002 SPI Read Operation

Other Parts Discussed in Thread: CDCE62002

Hi,

Not sure if this has been answered in a previous post by another person.

I have scanned the latest (March 2011) CDCE62002 data sheet and i do not believe the answer is there.

For a READ command to the CDCE62002 does the IC send all 32 bits or just the 28 data bits ?

The SPI_MISO shows Bit0, Bit1, Bit2 sent etc., so are these SPI BITS such that the 28 Data bits are sent after SPI BIT3 ??.

Thanks and regards,

Richard.

  • From bit0 to bit3 is the address of each register, bytes from 4 to 31 is the data of the register.

    For that reason there are two columns, one called SPI BIT and the other one RAM bit.

    When writing/reading any register, please send in the SPI protocol all 31 bits (including bits 0 to 3 that indicates the address of the register)

    Hope this solved the question,

    Best regards,

    Mariajose

  • Hi Maria,

    Thanks. So all 32 bits are sent by the CDCE62002 when a READ operation is performed using the SPI control, starting with SPI Bit 0 ending with DATA Bit 27 . Thanks.

    Regards,

    Richard.