The datasheet has very little data on this protocol.
It does not seem to mention the inactive clock polarity.
I have assumed that it is low (from the very vague spi protocol image)
The MISO data should be read on the rising edge.
I assume to read register 0x402d I would:
clock the enable low three times (with a 1 msec delay on edge changes)
pull the enable low
send 0x01 //the address plus the read bit
drive the master with a dummy write and read the slave.
drive enable high
So when I do this the ada1961 pulls the MISO data line low just after the 0x2d and that's all I get.
I know this register defaults to 0xAA from the data sheet.
Any help would be appreciated!