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CAP1114 Datasheet(PDF) 56 Page - SMSC Corporation |
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CAP1114 Datasheet(HTML) 56 Page - SMSC Corporation |
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56 / 102 page  Multiple Channel Capacitive Touch Sensor and LED Driver Datasheet Revision 1.1 (02-04-11) 56 SMSC CAP1114 DATASHEET Bits 7 - 4 - MAX_DUR_G [3:0] - (default 1101b) - Determines the maximum time that a button is allowed to be pressed until the Capacitive Touch sensor is recalibrated as shown in Table 6.22. Bits 3 - 0 - RPT_RATE_SL[3:0] - (default 0100b) Determines the time duration between interrupt assertions when auto repeat is enabled. This setting applies when a slide is detected on the Grouped Sensors and acts as the base repeat rate that is adjusted based on the slide speed (see Section 5.5.5). The resolution is 35ms the range is from 35ms to 560ms as shown in Table 6.23. 6.19 Calibration Enable Register The Calibration Enable Register controls whether the indicated Capacitive Touch Sensor input is automatically re-calibrated. If a sensor is not enabled, the corresponding calibration enable bit is ignored. Bit 7- G_CEN - Enables all sensors in the group to be re-calibrated simultaneously. ‘0’ - None of the grouped channels are automatically re-calibrated. They can be re-calibrated manually by setting the G_CAL bit. ‘1’ (default) - All of the grouped channels are automatically re-calibrated as the CAP1114 samples. Bit 6 - S7_CEN - Enables the CS7 input to be re-calibrated automatically. ‘0’ - The CS7 input is not automatically re-calibrated. ‘1’ (default) - The CS7 input is automatically re-calibrated as the CAP1114 samples. Bit 5 - S6_CEN - Enables the CS6 input to be re-calibrated automatically. Bit 4 - S5_CEN - Enables the CS5 input to be re-calibrated automatically. Bit 3 - S4_CEN - Enables the CS4 input to be re-calibrated automatically. Bit 2 - S3_CEN - Enables the CS3 input to be re-calibrated automatically. Bit 1 - S2_CEN - Enables the CS2 input to be re-calibrated automatically. Bit 0 - S1_CEN - Enables the CS1 input to be re-calibrated automatically. 6.20 Calibration Activate Registers Table 6.27 Calibration Enable Register ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 25h R/W Calibration Enable G_ CEN S7_ CEN S6_ CEN S5_ CEN S4_ CEN S3_ CEN S2_ CEN S1_ CEN FFh Table 6.28 Calibration Activate Registers ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 26h R/W Calibration Activate G_ CAL S7_ CAL S6_ CAL S5_ CAL S4_ CAL S3_ CAL S2_ CAL S1_ CAL 00h 46h R/W Grouped Sensor Calibration Activate S14_ CAL S13_ CAL S12_ CAL S11_ CAL S10_ CAL S9_ CAL S8_ CAL 00h |
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