參數(shù)資料
型號: TDA7514
廠商: 意法半導(dǎo)體
英文描述: SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR
中文描述: 單芯片F(xiàn)M /調(diào)幅調(diào)諧立體聲解碼器和音頻處理器
文件頁數(shù): 37/74頁
文件大?。?/td> 604K
代理商: TDA7514
37/74
TDA7514
Table 28. SUBADDRESS 13: AM Fast AGC1, AM Ultra NARROW BAND AGC, Weather Band Gain
MSB
D7
D6
D5
D4
D3
D2
Table 29. SUBADDRESS 14: Soft Mute, Adjacent Channel Mute
(*) Cfr. byte 20 for dependancy of ISS Smeter threshold on byte 14 programming
LSB
D0
FUNCTION
D1
AM fast AGC1
0
1
off (R =100 Kohm)
on (R = 9 Kohm)
AM Narrow AGC disable
NAGC on
NAGC off
AM Ultra Narrow Band AGC Threshold
@ IF2AMPin
76
86
92
90
75
85
88
78
74
83
90
79
73
82
87
77
Weather Band audio gain boost
boost off (std audio gain)
boost on (audio gain x 15 = +23.5 dB)
0
1
@ SG
67
77
83
81
66
76
79
69
65
74
81
70
64
73
78
68
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
MSB
D7
LSB
D0
FUNCTION
D6
D5
D4
D3
D2
D1
Soft mute start/stop point (FM, AM) (*)
V
SmeterL
=0,
V
SmeterL
=0.2,
V
SmeterL
=0.5,
V
SmeterL
=1.0,
Adjacent channel mute start/stop point (FM)
V
AdjChL
=1,
V
AdjChL
=2
Full soft mute level
-4dB
(step = -2.5dB)
-21.5dB
Full adjacent channel mute level
0dB
-6dB
-9dB
-12dB
0
0
1
1
0
1
0
1
V
SmeterH
=0.6
V
SmeterH
=0.6
V
SmeterH
=1.4
V
SmeterH
=1.4
0
1
V
AdjChH
=4.5
V
AdjChH
=4.5
0
-
1
0
-
1
0
-
1
0
0
1
1
0
1
0
1
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