參數(shù)資料
型號(hào): TDA7540N
廠商: STMICROELECTRONICS
元件分類: 調(diào)諧器
英文描述: 2-BAND, AUDIO TUNER, PQFP80
封裝: 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-80
文件頁(yè)數(shù): 59/76頁(yè)
文件大小: 1225K
代理商: TDA7540N
Software specification
TDA7540N
0
1
0
Level gain 1.34dB
---
-
1
Level gain 4.7dB
0
AM audio filter “OFF”
1
AM audio filter “ON” (has to be set if AMNB is used !!)
Table 42.
Addr 30 stereodecoder 7 (continued)
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
Table 43.
Addr 31 stereodecoder 8
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Quality noise gain =6dB
0
1
Quality noise gain =9dB
1
0
Quality noise gain =12dB
1
Quality noise gain =15dB
0
Enable AFS PIN
1
Disable AFS PIN
0
AFS influence on stereodecoder mute
1
No AFS influence on stereodecoder mute
0
PD hold activation if AFS<Vth1
1
PD hold activation if AFS<Vth2
0/1
not valid
0/1
not valid
0
AM audio delay for noise blanking “OFF”
1
AM audio delay for noise blanking “ON”(has to be set if
AMNB is used !!)
Table 44.
Addr 32 stereodecoder 9
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Deemphasis shift (25/37.5s)
1
Deemphasis no shift (50/75s)
00000
AM corner frequency = 3.18kHz
00001
AM corner frequency = 3.10kHz
00010
AM corner frequency = 3.02kHz
-----
11101
AM corner frequency = 1.12kHz
11111
AM corner frequency = 1.06kHz
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