EVAL-AD7142EB View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

EVAL-AD7142EB

Programmable Capacitance-to-Digital Converter with Environmental Compensation

Analog Devices 

AD7142

Table 21. AMB_COMP_CTRL0 Register

Default

Address Data Bit Value

Type

0x002

[3:0]

0

R/W

Name

FF_SKIP_CNT

[7:4]

F

[11:8]

F

[13:12] 0

[14]

0

[15]

0

FP_PROXIMITY_CNT

LP_PROXIMITY_CNT

PWR_DOWN_TIMEOUT

FORCED_CAL

CONV_RESET

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.

Table 22. AMB_COMP_CTRL1 Register

Default

Address Data Bit Value

Type

0x003

[7:0]

64

R/W

[13:8]

1

[15:14] 0

Name

PROXIMITY_RECAL_LVL

PROXIMITY_DETECTION_RATE

SLOW_FILTER_UPDATE_LVL

Description

Proximity recalibration level

Proximity detection rate

Slow filter update level

Table 23. AMB_COMP_CTRL2 Register

Default

Address Data Bit Value

Type

0x004

[9:0]

3FF

R/W

[15:10] 3F

Name

FP_PROXIMITY_RECAL

LP_PROXIMITY_RECAL

Description

Full power mode proximity recalibration time control

Low power mode proximity recalibration time control

Table 24. STAGE_LOW_INT_EN Register

Address Data Bit

Default

Value

Type

0x005 [0]

0

R/W

Name

STAGE0_LOW_INT_EN

[1]

0

STAGE1_LOW_INT_EN

[2]

0

STAGE2_LOW_INT_EN

[3]

0

STAGE3_LOW_INT_EN

Description

STAGE0 low interrupt enable

0 = interrupt source disabled

1 = INT asserted if STAGE0 low threshold is exceeded

STAGE1 low interrupt enable

0 = interrupt source disabled

1 = INT asserted if STAGE0 low threshold is exceeded

STAGE2 low interrupt enable

0 = interrupt source disabled

1 = INT asserted if STAGE0 low threshold is exceeded

STAGE3 low interrupt enable

0 = interrupt source disabled

1 = INT asserted if STAGE0 low threshold is exceeded

Rev. 0 | Page 41 of 68

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