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參數(shù)資料
| 型號： | TDA9874H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Digital TV sound demodulator/decoder |
| 中文描述： | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| 封裝： | 14 X 14 MM, 2.20 MM HEIGHT, PLASTIC, SOT-205-1, QFP-44 |
| 文件頁數(shù)： | 37/56頁 |
| 文件大小： | 254K |
| 代理商： | TDA9874H |
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1998 Apr 27
37
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874H
7.4.1
D
EVICE
S
TATUS
R
EGISTER
(DSR)
Table 59
Device Status Register (subaddress 0)
Table 60
Description of DSR bits
7
6
5
4
3
2
1
0
P2IN
P1IN
RSSF
AMSTAT
VDSP
IDDUA
IDSTE
BIT
SYMBOL
DESCRIPTION
7
P2IN
Input from Port 2.
This bit reflects the status of the P2 general purpose port pin;
see Section 7.3.2. If P2IN = 1, then the P2 general purpose port pin is HIGH.
If P2IN = 0, then the P2 general purpose port pin is LOW.
Input from Port 1.
This bit reflects the status of the P1 general purpose port pin;
see Section 7.3.2. If P1IN = 1, then the P1 general purpose port pin is HIGH.
If P1IN = 0, then the P1 general purpose port pin is LOW.
Reserve Sound Switching Flag.
RSSF = 1, this bit is a copy of the C4 bit in the
NICAM Status Register (see Section 7.4.2). It indicates that the FM (or AM for
standard L) sound matches the digital transmission and auto-muting should be enabled.
RSSF = 0, auto-muting should be disabled, as analog and digital sound are different.
Auto-mute Status.
If this bit is HIGH, it indicates that the auto-muting function has
switched from NICAM to the program of the first sound carrier (i.e. FM mono or AM in
NICAM L systems).
Identification of NICAM sound.
VDSP = 1, indicates that digital transmission is a
sound source. VDSP = 0, indicates the transmission is either data or a currently
undefined format.
Identification of FM dual sound; A2 systems.
If IDDUA = 1, an FM dual-language
signal has been identified. When neither IDSTE nor IDDUA = 1, the received signal is
assumed to be FM mono (A2 systems only).
Identification of FM stereo; A2 systems.
If IDSTE = 1, an FM stereo signal has been
identified (A2 systems only).
Value is undefined.
6
P1IN
5
RSSF
4
AMSTAT
3
VDSP
2
IDDUA
1
IDSTE
0
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TDA9875 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
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| 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(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)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(yīng)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 |
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