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參數(shù)資料
| 型號： | TDA9870A |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 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)： | 36/88頁 |
| 文件大?。?/td> | 362K |
| 代理商： | TDA9870A |
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1998 Aug 10
36
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9870A
10.3.5.2
Definition
Subaddresses 6 to 8.
Same as for sound carrier 1, except for subaddresses used.
10.3.6
D
EMODULATOR CONFIGURATION REGISTER
10.3.6.1
Description
Table 22
Description of subaddress 9 (notes 1 and 2)
Notes
1.
It is recommended to switch the FM sound mode identification off whenever the received program is not a terrestrial
2-carrier sound.
Switching the identification off will reset the associated hardware to a defined state.
2.
10.3.6.2
Definition
Table 23
Subaddress 9 (note 1; see Table 22)
Note
1.
The default setting at power-up is 00000000.
NAME
HIGH/LOW
FUNCTION
CH1MODE
HIGH
LOW
selects the hardware for the first sound carrier to operate in AM mode
FM mode is assumed. This applies to both terrestrial and satellite FM reception.
selects the filter bandwidth for channel 1 and channel 2 in accordance with Table 25
FILTBW0,
FILTBW1
CH2MOD0,
CH2MOD1
IDAREA
These bits control the hardware for the second sound carrier in accordance with the
truth Table 24.
selects FM identification frequencies in accordance with the specification for Korea
frequencies for Europe are selected (B/G and D/K standard)
These bits define the response time after which a sound mode identification result may be
expected. The longer the time, the more reliable the identification.
HIGH
LOW
IDMOD0,
IDMOD1
BIT
NAME
DESCRIPTION
7 (MSB)
6
5
4
3
2
1
0 (LSB)
IDMOD1
IDMOD0
IDAREA
FILTBW1
CH2MOD1
CH2MOD0
FILTBW0
CH1MODE
response time for FM sound mode identification
application area for FM identification
selects filter bandwidth in accordance with Table 25
channel 2 receive mode
selects filter bandwidth in accordance with Table 25
channel 1 receive mode
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