AD7143 Analog Devices, AD7143 Datasheet - Page 37

• Manufacturer Part Number: AD7143
• Description: Programmable Controller for Capacitance Touch Sensors
• Manufacturer: Analog Devices

Specifications of AD7143

• Resolution (bits): 16bit
• # Chan: 8
• Sample Rate: n/a
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: n/a
• Ain Range: ± 2 pF (Delta C)
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

Table 18. AMB_COMP_CTRL0 Register
Address
0x002
Table 19. AMB_COMP_CTRL1 Register
Address
0x003
Table 20. 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
0
F
F
0
0
0
Default
64
1
0
Default
3FF
3F
Type
R/W
Type
R/W
Type
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 37 of 56
Description
Fast filter skip control (N+1)
0000 = no sequence of results are 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
Full power mode proximity period
Low power mode proximity period
Full power to low power mode time out 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 back to STAGE0
Description
Proximity recalibration level
Proximity detection rate
Slow filter update level
Description
Full power mode proximity recalibration time control
Low power mode proximity recalibration time control
AD7143