參數(shù)資料
型號: LP39542TL
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 顯示驅(qū)動器
英文描述: Advanced Lighting Management Unit
中文描述: LED DISPLAY DRIVER, PBGA36
封裝: 3 X 3 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, MICRO, SMD-36
文件頁數(shù): 18/58頁
文件大小: 2547K
代理商: LP39542TL
AUDIO SYNCHRONIZATION ELECTRICAL PARAMETERS
Symbol
Z
IN
A
IN
Parameter
Input Impedance of ASE
Conditions
Min
250
Typical
500
Max
Units
k
Ω
V
Audio Input Level Range
(peak-to-peak)
Gain = 21 dB
Gain = 0 dB
0.1
V
DDA
-0.1
f
3dB
Crossover Frequencies (-3 dB)
Narrow Frequency Response
kHz
Low Pass
Band Pass
High Pass
Low Pass
Band Pass
High Pass
0.5
1.0 and 1.5
2.0
1.0
2.0 and 3.0
4.0
Wide Frequency Response
CONTROL OF ADC AND AUDIO SYNCHRONIZATION
The following table describes the controls required for audio synchronization.
Audio_sync_CTRL1 (2AH)
GAIN_SEL[2:0]
Bits 7-5
Input signal gain control. Range 0...21 dB, step 3 dB:
[000] = 0 dB (default)
[001] = 3 dB
[010] = 6 dB
Synchronization mode selector.
SYNCMODE = 0
Amplitude Mode (default)
SYNCMODE = 1
Frequency Mode
Automatic Gain Control enable
1 = enabled
0 = disabled (Gain Select enabled) (default)
Audio synchronization enable
1 = Enabled
Note : If AGC is enabled, AGC gain starts from current GAIN_SEL gain value.
0 = Disabled (default)
[00] = Single ended input signal, ASE.
[01] = Temperature measurement
[10] = Ambient light measurement
[11] = No input (default)
Audio_sync_CTRL2 (2BH)
0 – averaging disabled (not applicable in audio sync mode)
1 – averaging enabled (not applicable in audio sync mode)
See below: Mode control
Sets the LEDs light response time to audio input.
[00] = FASTEST (default)
[01] = FAST
[10] = MEDIUM
[11] = SLOW
(For SLOW setting in amplitude mode f
MAX
= 3.8 Hz,
Frequency mode f
MAX
= 7.6 Hz)
[011] = 9 dB
[100] = 12 dB
[101] = 15 dB
[110] = 18 dB
[111] = 21 dB
SYNC_MODE
Bit 4
EN_AGC
Bit 3
EN_SYNC
Bit 2
INPUT_SEL[1:0]
Bits 1-0
EN_AVG
Bit 4
MODE_CTRL[1:0]
Bits 3-2
SPEED_CTRL[1:0]
Bits 1-0
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LP3954RL 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit
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