Please could anyone tell me what sets of conditions could force the ADM1064 to enter the 'Reserved' state?
My apologies for the incredibly long delay in posting any further detail on this problem.
The issue was discovered to be due to excessive loading of the REFOUT
The device block diagram shows that this same reference is also used for the internal ADC, so overloading would affect the sequencing function.
As a note, there is an error in the datasheet, regarding REFOUT loading, as it shows a source/sink current capability of +/-0.25mV. This is assumed to actually require interpretation as +/-0.25mA (+/-250uA).
Retrieving data ...