On p.40 of the datasheet, address 0x60 bit 4 is described as using the SYNCINB- pin when in single-ended CMOS mode. We mistakenly have connected to the SYNCINB+ pin, and have bypassed the SYNCINB- pin to ground. Will the part still work correctly in this manner?
We always seem to have connectivity. I guess that proves that SYNCIN is functional.