Datasheet

CY8C20xx6A/H CapSense Design Guide Doc. No. 001-65973 Rev. *A 16
3.2 User Module Overview
Figure 3-3. User Module Block Diagram
User modules contain an entire CapSense system, from physical sensing to data processing. The behavior of the
user module is defined using a variety of parameters. These parameters affect different parts of the sensing system
and can be separated into low-level and high-level parameters. The parameters communicate with one another using
global arrays.
Low-level parameters define the behavior of the sensing method at the physical layer, and relate to the conversion
from capacitance to Raw Count. These parameters include things like the iDAC's output range and settling time for
the voltage across the C
MOD
CSD User Module Low-Level Parameters
. Low-level parameters are unique to each type of sensing method and are described in
, CSA_EMC User Module Low-Level Parameters, and SmartSense User
Module Parameters.
High-level parameters define the way taw counts are processed to produce information such as sensor ON/OFF state
and estimated finger position on a slider. These parameters include things like debounce counts and noise
thresholds. The high-level parameters are the same for all sensing methods and are described in High-Level
Parameters.