Hi Analog D.
I used the Ultra librarian to generate the AD9523-1 library part to use with ORCAD Capture 16.6. The part produced has a bit of a discrepancy for Pin 69 and 63.
The data sheet defines Pin 69 as VDD_1.8OUT[0..1] and not VDD1.8_PLL2 as the BXL part makes it.
The data sheet defines Pin 63 as VDD_1.8OUT[2..3] and not VDD1.8OUT_0__3_ as the BXL part makes it.
Both are 1.8volt supply pins so perhaps this not critical but sent me on a bit of a goose chase trying to "find my error" when generating the part.