ITCHIN is a read-only register. This register enables the values of signal inputs to be read when bit  of the Integration Mode Control Register is set to 1. Figure 15.21 shows the bit arrangement of the ITCHIN Register.
Table 15.24 shows how the bit values correspond with the ITCHIN Register functions.
|[3:0]||CTCHIN||Reads the values of the CTCHIN inputs|