at42qt2100 ATMEL Corporation, at42qt2100 Datasheet - Page 28

• Manufacturer Part Number: at42qt2100
• Description: Qtouch Touch Sensor Ic
• Manufacturer: ATMEL Corporation

5.4.3
28
AT42QT2100
QT2100 Data
Byte 2
During this exchange, the QT2100 returns the data requested on the previous exchange
(Normal Data by default), and at the next exchange the requested debug data is returned.
Table 5-11.
Byte 0
Table 5-12.
Byte 1
Byte 2
QT2100
Byte
Always set to 0.
State of Channel: Indicates the current state of the channel.
LSB Delta/LSB Reference: The least significant 8 bits (LSB) of the Reference/Delta
signal.
MSB Delta/MSB Reference: The most significant 8 bits (MSB) of the Reference/Delta
signal.
0
1
2
State Code
0x01
0x02
0x04
0x08
0x10
0x20
0x40
“Send Debug Data” Command Mode – Return Bytes
Sensor States
7
Sensor States
Calibration
No Detect (no touch)
Filter In (to confirm touch)
Detect (touched)
Filter out (to confirm release)
Recal (positive error recalibration)
Fault Check
6
5
MSB Delta/MSB Reference
LSB Delta/LSB Reference
State of Channel
4
Bit
3
2
1
9554CX–AT42–11/11
0