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CAP1066 Datasheet(PDF) 44 Page - SMSC Corporation |
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CAP1066 Datasheet(HTML) 44 Page - SMSC Corporation |
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44 / 71 page  6 Channel Capacitive Touch Sensor with 6 LED Drivers Datasheet Revision 1.1 (08-05-09) 44 SMSC CAP1066 DATASHEET 5.11 Calibration Activate Registers The Calibration Activate register force the respective sensors to be re-calibrated. When a bit is set, the corresponding Capacitive Touch Sensor will be re-calibrated and the bit will be automatically cleared once the re-calibration routine has finished. During the re-calibration routine, the sensors will not detect a press for up to 600ms and the Sensor Base Count register values will be invalid. During this time, any press on the corresponding sensors will invalidate the re-calibration. Bit 5 - CS6_CAL - When set, the CS6 input is re-calibrated. This bit is automatically cleared once the sensor has been re-calibrated successfully. Bit 4 - CS5_CAL - When set, the CS5 input is re-calibrated. This bit is automatically cleared once the sensor has been re-calibrated successfully. Bit 3 - CS4_CAL - When set, the CS4 input is re-calibrated. This bit is automatically cleared once the sensor has been re-calibrated successfully. Bit 2 - CS3_CAL - When set, the CS3 input is re-calibrated. This bit is automatically cleared once the sensor has been re-calibrated successfully. Bit 1 - CS2_CAL - When set, the CS2 input is re-calibrated. This bit is automatically cleared once the sensor has been re-calibrated successfully. Bit 0 - CS1_CAL - When set, the CS1 input is re-calibrated. This bit is automatically cleared once the sensor has been re-calibrated successfully. 5.12 Interrupt Enable Register The Interrupt Enable registers determine whether a sensor touch or release causes the interrupt pin to be asserted. Bit 5 - CS6_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS6 (associated with the CS6 status bit). ‘0’ - The interrupt pin will not be asserted if a touch is detected on CS6 (associated with the CS6 status bit). ‘1’ (default) - The interrupt pin will be asserted a touch is detected on CS6 (associated with the CS6 status bit). Bit 4 - CS5_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS5 (associated with the CS5 status bit). Bit 3 - CS4_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS4 (associated with the CS4 status bit). Table 5.18 Calibration Activate Registers ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 26h R/W Calibration Activate - - CS6_CAL CS5_CAL CS4_CAL CS3_CAL CS2_CAL CS1_CAL FFh Table 5.19 Interrupt Enable Register ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 27h R/W Interrupt Enable -- CS6_ INT_EN CS5_ INT_EN CS4_ INT_EN CS3_ INT_EN CS2_ INT_EN CS1_ INT_EN 3Fh |
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