AD7147 datasheet(46/73 Pages) AD

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Data Sheet

AD7147

Rev. D | Page 45 of 72

Table 22. AMB_COMP_CTRL0 Register

Address

Data Bit

Default

Value

Type

Name

Description

0x002

[3:0]

R/W

FF_SKIP_CNT

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

[7:4]

R/W

FP_PROXIMITY_CNT

Calibration disable period in full power mode =

FP_PROXIMITY_CNT × 16 × time for one conversion

sequence in full power mode

[11:8]

R/W

LP_PROXIMITY_CNT

Calibration disable period in low power mode =

LP_PROXIMITY_CNT × 4 × time for one conversion

sequence in low power mode

[13:12]

R/W

PWR_DOWN_TIMEOUT

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)

[14]

R/W

FORCED_CAL

Forced calibration control

0 = normal operation

1 = forces all conversion stages to recalibrate

[15]

R/W

CONV_RESET

Conversion reset control (self-clearing)

0 = normal operation

1 = resets the conversion sequence to STAGE0

Table 23. AMB_COMP_CTRL1 Register

Address

Data Bit

Default

Value

Type

Name

Description

0x003

[7:0]

R/W

PROXIMITY_RECAL_LVL

Proximity recalibration level; the value is multiplied by

16 to determine actual recalibration level

[13:8]

R/W

PROXIMITY_DETECTION_RATE

Proximity detection rate; the value is multiplied by 16 to

determine actual detection rate

[15:14]

R/W

SLOW_FILTER_UPDATE_LVL

Slow filter update level

Table 24. AMB_COMP_CTRL2 Register

Address

Data Bit

Default

Value

Type

Name

Description

0x004

[9:0]

3FF

R/W

FP_PROXIMITY_RECAL

Full power mode proximity recalibration time control

[15:10]

R/W

LP_PROXIMITY_RECAL

Low power mode proximity recalibration time control

AD7147 Datasheet(PDF) 46 Page - Analog Devices

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