22.2.1 Capture Sources
In Capture mode, the CCPx pin may be configured as an input by setting the associated TRIS control bit.
Important: If the CCPx pin is configured as an output, a
         write to the port can cause a Capture condition.
The capture source is selected by configuring the CTS bits as shown in the following table:
| CTS | Source | 
|---|---|
| 111 | CLC4_out | 
| 110 | CLC3_out | 
| 101 | CLC2_out | 
| 100 | CLC1_out | 
| 011 | IOC_interrupt | 
| 010 | C2_out | 
| 001 | C1_out | 
| 000 | Pin selected by CCPxPPS | 
