Datasheet

931
42023E–SAM–07/2013
ATSAM4L8/L4/L2
34.7.3 Sensor Idle Level
Name:
IDLE
Access Type: Read/Write
Offset: 0x08
Reset Value: 0x00000000
This register value is subtracted from initial measurement data in order to determine the relative capacitance. The IDLE value is
updated as a moving exponential weighted average of previous measurements, with the time-constant given in TIMING.TIDLE.
This register value is updated when ISR.SAMPLE is set.
• RIDLE: Integer Sensor Idle
This field contains the integer part of the measured idle-signal value.
• FIDLE: Fractional Sensor Idle
This field contains the fractional part of the measured idle-signal value. Note that some of the LSB’s of the fractional part might
not be implemented. Refer to the Module Configuration section.
31 30 29 28 27 26 25 24
- - - - RIDLE[15:12]
23 22 21 20 19 18 17 16
RIDLE[11:4]
15 14 13 12 11 10 9 8
RIDLE[3:0] FIDLE[11:8]
76543210
FIDLE[7:0]