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LP3952RL/NOPB Datasheet(PDF) 38 Page - Texas Instruments

Part # LP3952RL/NOPB
Description  6-Channel Color LED Driver with Audio Synchronization
PDF  46 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3952RL/NOPB Datasheet(HTML) 38 Page - Texas Instruments

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LP3952
SNVS518A – JULY 2007 – REVISED MARCH 2013
www.ti.com
AUDIO_SYNC_CTRL1 (2AH) – AUDIO SYNCHRONIZATION AND ADC CONTROL REGISTER 1
D7
D6
D5
D4
D3
D2
D1
D0
gain_sel[2:0]
sync_mode
en_agc
en_sync
input_sel[1:0]
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
rw-1
rw-1
Input signal gain control
gain_sel[2:0]
gain, dB
000
0 (default)
001
3
010
6
gain_sel[2:0]
Bits 7-5
011
9
100
12
101
15
110
18
111
21
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
00
Single ended input signal (ASE)
input_sel[1:0]
Bits 1-0
01
Not used
10
Not used
11
No input (default)
AUDIO_SYNC_CTRL2 (2BH) – AUDIO SYNCHRONIZATION AND ADC CONTROL REGISTER 2
D7
D6
D5
D4
D3
D2
D1
D0
en_avg
mode_ctrl[1:0]
speed_ctrl[1:0]
r-0
r-0
r-0
rw-0
rw-0
rw-0
rw-0
rw-0
0 – averaging disabled. fsample = 122 Hz, data in register changes every 8.2 ms.
en_avg
Bit 4
1 – averaging enabled. fsample = 244 Hz, averaging of 64 samples, data in register
changes every 262 ms (3.2Hz).
mode_ctrl[1:0]
Bits 3-2
Filtering mode control
LEDs light response time to audio input
speed_ctrl[1:0]
Response
00
FASTEST (default)
speed_ctrl[1:0]
Bits 1-0
01
FAST
10
MEDIUM
11
SLOW
38
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Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LP3952



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