N2HET is connected as a clock source for counter 1 in DCC1. This allows the application to measure the frequency of the pulse-width modulated (PWM) signal on N2HET.
N2HET can be configured to be an internal-only channel. That is, the connection to the DCC module is made directly from the output of the N2HET module (from the input of the output buffer).
For more information on DCC, see Section 6.6.3.