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AD9552: PIN-Config for SPI

Question asked by DanielM on Nov 13, 2012
Latest reply on Nov 13, 2012 by DanielM

hi,

 

In Rev.D is a note, that A[2:0] and Y[5:0] have all to be logic 1 to enable the SCP (3-wire SPI).

 

In Rev.E (11/2012) this note is missing.

 

I intend to use the chip in SCP-Mode for driving a GTP of a Xilinx Spartan 6.

 

How do i realize a clock < 160MHz before reconfiguration? If i have to set all pins to 1, the resulting clock is above 800MHz.

 

according to Rev.E, i would set Y="000111", but then is the SCP usable?

 

many thanks

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