LP8556 datasheet(44/63 Pages) TI1

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LP8556

SNVS871I – JULY 2012 – REVISED MARCH 2016

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8.6.2.16 CFGE

Address AEh

CFGE REGISTER

STEP_UP[1:0]

STEP_DN[1:0]

LED_FAULT_TH[2:0]

LED_COMP_HYST[1:0]

NAME

BIT

ACCESS

DESCRIPTION

STEP_UP

7:6

R/W

Adaptive headroom UP step size

00 = 105 mV

01 = 210 mV

10 = 420 mV

11 = 840 mV

STEP_DN

5:4

R/W

Adaptive headroom DOWN step size

00 = 105 mV

01 = 210 mV

10 = 420 mV

11 = 840 mV

LED_FAULT_TH

3:2

R/W

LED headroom fault threshold. This sets the HIGH comparator threshold.

00 = 5 V

01 = 4 V

10 = 3 V

11 = 2 V

LED_COMP_HYST

1:0

R/W

LED headrom comparison hysteresis. This sets the MID comparator threshold.

00 = DRIVER_HEADROOM + 1000 mV

01 = DRIVER_HEADROOM + 750 mV

10 = DRIVER_HEADROOM + 500 mV

11 = DRIVER_HEADROOM + 250 mV

8.6.2.17 CFGF

Address AFh

CFGF REGISTER

REVISION

NAME

BIT

ACCESS

DESCRIPTION

REV

7:0

R/W

EPROM Settings Revision ID code

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