CapSense Express Controllers Registers TRM, Document No. 001-91082 Rev. *E 91
DEVICE_CFG2
0x4f
1.5.60 DEVICE_CFG2
Address = 0x4f
Global sensing and processing configuration
Address: 0x4f
Bits 76543210
Host Access RW RW RW RW RW RW
Device Access RW RW RW RW RW RW
Bit Name PROXIMITY_ARST BUTTON_SLD_ARST ATH_EN EMC_EN
GUARD_E
N
SHIELD_E
N
Bits Name Description
7 : 6 PROXIMITY_ARST Proximity auto-reset configuration
0: Auto-reset disabled
1: Auto-reset enabled; timeout = 5 seconds
2: Auto-reset enabled; timeout = 20 seconds
5 : 4 BUTTON_SLD_ARST Button and slider auto-reset configuration. Refer CY8CMBR3xxx CapSense Design Guide for
details on Auto-reset feature.
0: Auto-reset disabled
1: Auto-reset enabled; timeout = 5 seconds
2: Auto-reset enabled; timeout = 20 seconds
3 ATH_EN Automatic threshold enable/disable configuration. Note that automatic thresholds can only be
enabled if EMC solution is disabled. If EMC_EN bit is set, automatic thresholds get disabled.
0: Automatic thresholds are disabled i.e. finger thresholds identified in BASE_THRESHOLDx/
FINGER_THRESHOLDx registers will be used for determining sensors' status.
1: Automatic thresholds are enabled i.e. finger thresholds are automatically determined
2 EMC_EN EMC solution enable (improves noise mitigation). This feature should not be simultaneously en-
abled along with buzzer (see BUZZER_CFG.BUZZER_EN). For CY8CMBR3116 this solution
also requires that sensors CS10-CS15(as applicable) are disabled via the SENSOR_EN regis-
ter. If any sensor in the range CS10-CS15 is enabled, the EMC solution is disabled regardless
of the EMC_EN setting. For CY8CMBR3106S, any type of button filtering (IIR or Median Filter;
see DEVICE_CFG0.MED_EN and DEVICE_CFG0.IIR_EN) should not be simultaneously en-
abled with the EMC solution. Operation is undefined when button filtering and EMC solution are
simultaneously enabled on CY8CMBR3106S.For CY8CMBR3106S, EMC solution is applicable
only to buttons and proximity sensors, not to slider segments.
0: EMC solution disabled
1: EMC solution enabled
1 GUARD_EN Capacitive sensing guard sensor function enable. This bit field is not applicable for part
CY8CMBR3102.
0: Guard sensor function disabled
1: Guard sensor function enabled
0 SHIELD_EN Capacitive sensing driven shield enable
0: Driven shield disabled
1: Driven shield enabled
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