ad7147a-1acbz-r Analog Devices, Inc., ad7147a-1acbz-r Datasheet - Page 43

• Manufacturer Part Number: ad7147a-1acbz-r
• Description: Captouch Programmable Controller For Single-electrode Capacitance Sensors
• Manufacturer: Analog Devices, Inc.

Table 23. AMB_COMP_CTRL0 Register
Address
0x002
Table 24. AMB_COMP_CTRL1 Register
Address
0x003
Table 25. AMB_COMP_CTRL2 Register
Address
0x004
Data Bit
[3:0]
[7:4]
[11:8]
[13:12]
[14]
[15]
Data Bit
[7:0]
[13:8]
[15:14]
Data Bit
[9:0]
[15:10]
Default
Value
0
F
F
0
0
0
Default
Value
64
1
0
Default
Value
3FF
3F
Type
R/W
R/W
R/W
R/W
R/W
R/W
Type
R/W
R/W
R/W
Type
R/W
R/W
Name
FF_SKIP_CNT
FP_PROXIMITY_CNT
LP_PROXIMITY_CNT
PWR_DOWN_TIMEOUT
FORCED_CAL
CONV_RESET
Name
PROXIMITY_RECAL_LVL
PROXIMITY_DETECTION_RATE
SLOW_FILTER_UPDATE_LVL
Name
FP_PROXIMITY_RECAL
LP_PROXIMITY_RECAL
Rev. 0 | Page 43 of 68
Description
Fast filter skip control (N + 1)
0000 = no sequence of results is skipped
0001 = one sequence of results is skipped for every one
allowed into fast FIFO
0010 = two sequences of results are skipped for every
one allowed into fast FIFO
1011 = maximum value = 12 sequences of results are
skipped for every one allowed into fast FIFO
Calibration disable period in full power mode =
FP_PROXIMITY_CNT × 16 × time for one conversion
sequence in full power mode
Calibration disable period in low power mode =
LP_PROXIMITY_CNT × 4 × time for one conversion
sequence in low power mode
Full power to low power mode timeout control
00 = 1.25 × (FP_PROXIMITY_CNT)
01 = 1.50 × (FP_PROXIMITY_CNT)
10 = 1.75 × (FP_PROXIMITY_CNT)
11 = 2.00 × (FP_PROXIMITY_CNT)
Forced calibration control
0 = normal operation
1 = forces all conversion stages to recalibrate
Conversion reset control (self-clearing)
0 = normal operation
1 = resets the conversion sequence to STAGE0
Description
Proximity recalibration level. Value is multiplied by 16 to
determine actual recalibration level.
Proximity detection rate. Value is multiplied by 16 to
determine actual detection rate.
Slow filter update level.
Description
Full power mode proximity recalibration time control
Low power mode proximity recalibration time control
AD7147A