參數(shù)資料
型號(hào): TDA7540B
廠商: 意法半導(dǎo)體
英文描述: AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)
中文描述: 調(diào)幅/調(diào)頻收音機(jī)調(diào)諧器集成電路汽車(chē)與立體聲解碼器和智能識(shí)別系統(tǒng)(ISS)的
文件頁(yè)數(shù): 56/75頁(yè)
文件大?。?/td> 1061K
代理商: TDA7540B
Software specification
TDA7540B
56/75
Table 35.
Addr 24 Stereodecoder 1
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Test mode stereodecoder and audioprocessor “ON”
1
Test mode stereodecoder and audioprocessor “OFF”
0
Audio AM noise blanker fix threshold disable
1
Audio AM noise blanker fix threshold enable
0
Fast clock for testing audioprocessor “ON”
1
Fast clock for testing audioprocessor “OFF”
0
Audio inverter OFF
1
Audio inverter ON
0
0
Audio noise blanking time (FM = 38
μ
s, AM = 1.2 ms)
0
1
Audio noise blanking time (FM = 25,5
μ
s, AM = 0.8 ms)
1
0
Audio noise blanking time (FM = 32
μ
s, AM = 1.0 ms)
1
1
Audio noise blanking time (FM = 22
μ
s, AM = 0.64 ms)
0
Stereodecoder VCO adjust minus
1
Stereodecoder no VCO adjust
0
Stereodecoder VCO adjust plus
1
Stereodecoder no VCO adjust
Table 36.
Addr 25 Stereodecoder 2
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Stereo decoder mute disable
1
Stereo decoder mute enable
0
Stereo decoder “ON” if muted
1
Stereo decoder “OFF” if muted
0
Forced MONO, must be set in AM
1
MONO/STEREO switch automatically
0
Noise blanker peak charge current low
1
Noise blanker peak charge current high
0
Pilot threshold high
1
Pilot threshold low
0
Deemphasis 50
μ
s
1
Deemphasis 75
μ
s
0
0
Stereodecoder ingain = 3,75dB
0
1
Stereodecoder ingain = 2,5dB
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