Differential Pair Net Connection Polarity Inversed

This compiler hint appears when the polarity of a differential pair net is not the same as that of the differential pair pin to which it is connected. For example, the positive net is connected to the negative pin, or vice-versa. The message is displayed in the Messages panel in the following format:

Inversed connection on differential pair PairName: net NetName is connected to pin PinDesignator (Polarity),

where

PairName is the name of the differential pair (e.g. V_TX1)

NetName is the name of the offending net (e.g. V_TX1_P)

PinDesignator is the designator of the device pin to which the offending net is connected (e.g. E6)

Polarity is the polarity of the pin (e.g. negative).

Default Report Mode

Warning

Recommendation

Use the Compile Errors dialog to quickly cross probe to the differential pair pin to which the connection has been made. Ensure that the net label attached to the connected wire is the same polarity as that of the pin. For example if the pin name is IO_L02N_0 and the net label is V_TX1_P, change the net label to V_TX1_N.

If a pair of violation messages of this type appears - one for the positive net of the pair attached to the negative pin of the device and one for the negative net of the same pair attached to the positive pin - simply swap the attached net labels around.