ADPD144RI datasheet(27/34 Pages) AD

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Data Sheet

ADPD144RI

Rev. A | Page 27 of 34

Address

Data

Bit

Default

Value

Access

Name

Description

0x24

[15:14]

0x0

R/W

Reserved

0x1

R/W

ILED2_SCALE

LED2 current scale factor.

1: 100% strength.

0: 40% strength (recommended operation setting).

LED2 Current Scale = 0.4 + 0.6 × (Register 0x24, Bit 13)

0x1

R/W

Reserved

[11:4]

0x0

R/W

Reserved

Write 0x03.

[3:0]

0x0

R/W

ILED2_COARSE

LED2 coarse current setting. Coarse current sink target value of LED2 in

standard operation. See Register 0x23, Bits[3:0] for values.

LED2PEAK = LED2COARSE × LED2FINE × LED2SCALE

where:

LED2PEAK is the LED2 peak target value (mA).

LED2COARSE

= 28 + 15.5 × (Register 0x24, Bits[3:0]).

LED2FINE

= 0.71 + 0.024 × (Register 0x25, Bits[10:6]).

LED2SCALE

= 0.4 + 0.6 × (Register 0x24, Bit 13).

0x25

[15:11]

0xC

R/W

Reserved

[10:6]

0xC

R/W

ILED2_FINE

LED2 fine adjust. Current adjust multiplier for LED2.

LED2 Fine Adjust = 0.71 + 0.024 × (Register 0x25, Bits[10:6])

See Register 0x24, Bits[3:0], for the full LED2 formula.

0x0

R/W

Reserved

[4:0]

0xC

R/W

ILED1_FINE

LEDX1 fine adjust. Current adjust multiplier for LEDX1.

LEDX1 Fine Adjust = 0.71 + 0.024 × (Register 0x25, Bits[4:0])

See Register 0x23, Bits[3:0], for the full LEDX1 formula.

0x30

[15:0]

0x0320

R/W

SLOTA_LEDMODE

LED configuration for Time Slot A.

Recommended setting: write 0x0319.

0x31

[15:8]

0x08

R/W

SLOTA_NUMPULSES

LED Time Slot A pulse count. nA: number of LED pulses in Time Slot A,

typically LEDX1. A setting of six pulses (0x06) is typical.

[7:0]

0x18

R/W

Reserved (write

0x13)

Write 0x13.

0x34

[15:10]

0x00

R/W

Reserved

0x0

R/W

SLOTB_LED_DIS

Time Slot B LED disable. 1: disables the LED that is assigned to Time Slot B.

current to the LEDs. Disabling both LEDs via this register is often used to

measure the dark level.

Use Register 0x11 instead to enable or disable the actual time slot usage

and not the LED only.

0x0

R/W

SLOTA_LED_DIS

Time Slot A LED disable. 1: disables the LED that is assigned to Time Slot A.

Use Register 0x11 instead to enable or disable the actual time slot usage

and not the LED only.

[7:0]

0x00

R/W

Reserved

0x35

[15:0]

0x0320

R/W

SLOTB_LEDMODE

LED configuration for Time Slot B.

Recommended setting: write 0x0319.

0x36

[15:8]

0x08

R/W

SLOTB_NUMPULSES

LED Time Slot B pulse count. nB: number of LED pulses in Time Slot B,

typically LED2. A setting of six pulses (0x06) is typical.

[7:0]

0x18

R/W

Reserved (write 0x13)

Write 0x13.

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