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參數(shù)資料
| 型號： | TDA9875 |
| 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 |
| 文件頁數(shù)： | 38/92頁 |
| 文件大?。?/td> | 279K |
| 代理商： | TDA9875 |
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1998 Feb 13
38
Philips Semiconductors
Preliminary specification
Digital TV Sound Processor (DTVSP)
TDA9875
10.3.6.2
Description
Table 23
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.
10.3.7
FM
DE
-
EMPHASIS REGISTER
10.3.7.1
Description
This register is used to select the proper de-emphasis characteristics as appropriate for the standard of the received
carrier. Bits B3 to B0 apply to sound carrier 1, bits B7 to B4 apply to sound carrier 2. In the event of FM stereo reception,
both groups must be set to the same characteristics.
10.3.7.2
Definition
Table 24
Subaddress 10 (note 1)
Note
1.
The default setting at power-up is 00000000.
NAME
HIGH/LOW
FUNCTION
CH1MODE
HIGH
LOW
HIGH
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.
Switches the decimation filters for the first sound carrier to a wide bandwidth, so that the
main sound carrier of a satellite channel with its larger deviation can be handled without
additional distortion.
The bandwidth is narrow to cope with the intermodulation requirements of FM stereo.
These bits control the hardware for the second sound carrier in accordance with the
truth Table 21. The NICAM mode employs a wider bandwidth of the decimation filters
than the FM mode.
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.
CH1WIDE
LOW
CH2MOD0,
CH2MOD1
IDAREA
HIGH
LOW
IDMOD0,
IDMOD1
BIT
NAME
DESCRIPTION
7 (MSB)
6
5
4
3
2
1
0 (LSB)
ADEEM2
adaptive de-emphasis on/off
time constant selection for FM de-emphasis
ADEEM1
adaptive de-emphasis on/off
time constant selection for FM de-emphasis
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9875A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875AH/V2,557 | 功能描述:IC SOUND PROC DGTL TV 64QFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| TDA9880 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Alignment-free multistandard vision and FM sound IF-PLL demodulator |
| TDA9880T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Alignment-free multistandard vision and FM sound IF-PLL demodulator |
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