參數(shù)資料
型號(hào): TDA9870A
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: Digital TV Sound Processor DTVSP
中文描述: SPECIALTY CONSUMER CIRCUIT, PDIP64
封裝: SHRINK, PLASTIC, DIP
文件頁數(shù): 38/88頁
文件大?。?/td> 362K
代理商: TDA9870A
1998 Aug 10
38
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9870A
Table 28
De-emphasis
Table 29
Description of bits ADEEM1 and ADEEM2 (note 1)
Note
1.
The FM de-emphasis gain is 0 dB at 40 Hz.
10.3.8
FM
MATRIX REGISTER
10.3.8.1
Description
This register is used to select the proper dematrixing characteristics as appropriate for the standard of the received
carrier and the related sound mode identification.
10.3.8.2
Definition
Table 30
Subaddress 11 (notes 1)
Note
1.
The default setting at power-up is 00000000.
B6, B2
B5, B1
B4, B0
DE-EMPHASIS
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
50
μ
s (Europe)
60
μ
s
75
μ
s (M standard)
J17
off
NAME
HIGH/LOW
FUNCTION
ADEEM1,
ADEEM2
HIGH
Activates the adaptive de-emphasis function, which is required for certain satellite
FM channels. The standard FM de-emphasis must then be set to 75
μ
s.
the adaptive de-emphasis is off
LOW
MSB
LSB
B7
0
B6
0
B5
0
B4
0
B3
0
B2
B1
B0
see Table 31
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