Abov MC97F6108A - Comparator and OP-AMP Description

12. Analog comparator and OP-AMP MC97F6108A User’s manual
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12.1 Comparator and OP-AMP description
Comparator 0
 "+" and "–" input are external analog port (CMP0_IN_P, CMP0_IN_N).
 Output(CPOUT0) generates interrupt flag(CMP0IF) and comparator flag(C0_FLAG).
 CPOUT0 is connected to the timer 0 event counter source.
 CMP0IF is connected to a capture source of the timer 0.
 C0_FLAG is used to start PPG.
Comparator 1
 "+" input is external analog port (CMP1_IN_P).
 "-" input is internal Vref selected by setting C1NVSL[3:0] register.
 Output(CPOUT1) generates interrupt flag(CMP1IF) and comparator flag(C1_FLAG).
 CPOUT1 is connected to the timer 1 event counter source.
 CMP1IF is connected to a capture source of the timer 1 and PPG.
 C1_FLAG is used to disable PPG output.
Comparator 2
 "+" input is external analog port (CMP2_IN_P).
 "-" input is internal Vref selected by setting C2NVSL[3:0] register.
 Output(CPOUT2) generates interrupt flag(CMP2IF) and comparator flag(C2_FLAG).
 CPOUT2 is connected to the timer 2 event counter source.
 CMP2IF is connected to a capture source of the timer 2.
 CPOUT2 is connected to the PPG to control the period of PPG in auto period mode.