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AD4032-24 SDO output always zero

Category: Hardware
Product Number: AD4032-24

REFIN is tied to GND, 

REF is tied to 5.0Vref, 

VDD_5V is 5.4 VDC

I used default settings, also 4 lane SDOs, all four SDO always output zero.  (all 0 on scope) 

I did configure the 0x20 register for 4 lane and 32bit access, all zero

I skip configure registers and use the default setting, still all zero.