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AT42QT2100 Datasheet(PDF) 26 Page - ATMEL Corporation |
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AT42QT2100 Datasheet(HTML) 26 Page - ATMEL Corporation |
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26 / 44 page  26 AT42QT2100 [DATASHEET] 9554E–AT42–01/13 5.4 Send Debug Data 5.4.1 Introduction In a Send Debug Data exchange (Req = 001) the host requests the QT2100 to send 16-bit debug data on the next 3-byte exchange. 5.4.2 Host Data In Send Debug Data command mode the host sends the 3-byte data in Table 5-9. Byte 0 Debug Data: 1 bit, specifying the debug data that should be returned. Either of two 16-bit debug data states may be requested: Debug Data = 0: Reference – the reference level used by the QT2100 for comparison with the current measurements to detect touch. The reference value is a 16-bit unsigned integer. Debug Data = 1: Delta – the difference between the reference level and the current level, indicating how close the channel is to detecting touch. The delta value is a 16-bit signed integer. Req: Set to 001 to indicate Send Debug Data command mode. Byte 1 Channel: 4 bits indicating the measurement channel for which the Send Debug Data is requested. Channels are mapped to keys or slider/wheel electrodes, as in Table 5-10. Table 5-9. Send Debug Data Command Mode – Host Command Bytes Host Byte Bit 7 6 5 4 3 2 1 0 0 Req = 001 0 0 0 0 Debug Data 1 0 0 0 0 Channel 2 0 0 0 0 0 0 0 0 Note: Bits labelled 0 should not be altered Table 5-10. Channel Mappings Channel Sensing Object 0 Key B1 1 Key B2 2 Key B3 3 Key B4 4 Key B5 5 Key B6 6 Key B7 |
Similar Part No. - AT42QT2100_14 |
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Similar Description - AT42QT2100_14 |
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