LP3954TLSLASHNOPB.A datasheet(49/58 Pages) TI2

49 / 58 page

LP3954

www.ti.com

SNVS340D – JUNE 2005 – REVISED MARCH 2013

Maximum current for R2 driver

ir2[2:0]

Maximum output current

0.25×IMAX

ir2[1:0]

Bits 5-4

0.50×IMAX

0.75×IMAX

1.00×IMAX

Maximum current for G2 driver

ig2[1:0]

Maximum output current

0.25×IMAX

ig2[1:0]

Bits 3-2

0.50×IMAX

0.75×IMAX

1.00×IMAX

Maximum current for B2 driver

ib2[1:0]

Maximum output current

0.25×IMAX

ib2[1:0]

Bits 1-0

0.50×IMAX

0.75×IMAX

1.00×IMAX

AUDIO_SYNC_CTRL1 (2AH) – AUDIO SYNCHRONIZATION AND ADC CONTROL REGISTER 1

gain_sel[2:0]

sync_mode

en_agc

en_sync

input_sel[1:0]

rw-0

rw-1

Input signal gain control

gain_sel[2:0]

gain, db

000

0 (default)

001

010

gain_sel[2:0]

Bits 7-5

011

100

101

110

111

Input filter mode control

sync_mode

Bit 4

0 – Amplitude mode

1 – Frequency mode

0 – automatic gain control disabled

en_agc

Bit 3

1 – automatic gain control enabled

0 – audio synchronization disabled

en_sync

Bit 2

1 – audio synchronization enabled

ADC input selector

input_sel[1:0]

Input

Single ended input signal (ASE)

input_sel[1:0]

Bits 1-0

Temperature measurement

Ambient light measurement

No input (default)

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