Versal ACAP System Monitor Architecture Manual (AM006)

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1.3 English

To minimize the package pins required to sample an external channel, the auxiliary analog inputs can support single-pin sampling. Typically useful when measuring several channels with a common reference, VAUXN pins can be used as a reference for multiple VAUXP channels, known as shared-N. When using the shared-N mode, the number of package pins required to support 16 auxiliary analog inputs can be reduced from 32 package pins to 17. Any pin used in VAUXN in an auxiliary channel can be used as a VAUXN reference for any other channel in the same bank. There are no restrictions on how many channels can share a VAUXN channel or how many VAUXN channels can be shared.