Method to digitize analog signals in a system utilizing dynamic analog test multiplexer for diagnostics

An analog test module comprising:

• an analog test multiplexer operable to receive a plurality of selection bits and a plurality of analog voltage inputs, and operable to output an analog output, each of the plurality of analog voltage inputs coupled to a corresponding analog voltage inside an analog block;
• and
• an analog monitor state machine having a digital logic circuit, wherein the digital logic circuit is operable to generate an address associated with an analog voltage inside the analog block and operable to generate the plurality of selection bits from the address, the analog monitor state machine is operable to transmit the plurality of selection bits to the analog test multiplexer, the plurality of selection bits is operable to select which of the plurality of analog voltage inputs is transmitted to the analog output and the plurality of selection bits is operable to provide selective access to any of the plurality of analog voltages inside the analog test block, wherein the analog state machine is operable to compare the analog output to a predetermined value and wherein the analog state machine is operable to generate an error message when a value of the analog output is outside the pre-determined value.