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參數(shù)資料
| 型號： | TDA9874APS |
| 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, PDIP42 |
| 封裝： | 0.600 INCH, SHRINK, PLASTIC, MS-020, SOT-270-1, DIP-42 |
| 文件頁數(shù)： | 42/68頁 |
| 文件大?。?/td> | 231K |
| 代理商： | TDA9874APS |
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1999 Dec 03
42
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874A
10.3.14 NICAM L
OWER
E
RROR
L
IMIT
R
EGISTER
(NLELR)
When the auto-mute function is enabled
(see Section 10.3.12) and the NICAM bit error count is
lower than the value contained in this register, the NICAM
signal is selected (again) for reproduction; see also
Section 10.3.15.
The default setting after power-on reset is ‘0001 0100’.
Table 43
NICAM lower error limit register
(subaddress 16)
10.3.15 NICAM U
PPER
E
RROR
L
IMIT
R
EGISTER
(NUELR)
When the auto-mute function is enabled
(see Section 10.3.12) and the NICAM bit error count is
higher than the value contained in this register, the signal
of the first sound carrier (i.e. FM mono or AM sound) or the
analog mono input is selected for reproduction.
The difference between the upper and lower error limit
constitutes a hysteresis to avoid frequent switching
between NICAM and the program on the 1st sound carrier.
The default setting after power-on reset is ‘0101 0000’.
Table 44
NICAM upper error limit register
(subaddress 17)
10.3.16 A
UDIO
M
UTE
C
ONTROL
R
EGISTER
(AMCONR)
Onlybits 6,2 and 1areused.Thestateofthe
unusedbits
should be set to logic 1
. When any of these bits is set
HIGH, the corresponding pair of output channels will be
muted. A LOW bit allows normal signal output.
The default setting after power-on reset is ‘1111 1111’.
7
6
5
4
3
2
1
0
B7
B6
B5
B4
B3
B2
B1
B0
7
6
5
4
3
2
1
0
B7
B6
B5
B4
B3
B2
B1
B0
Table 45
Audio mute control register (subaddress 18)
Table 46
Description of the AMCONR bits
7
6
5
4
3
2
1
0
1
MUTI
2
S
1
1
1
MUTSOUT
MUTMOUT
1
BIT
SYMBOL
MUTI
2
S
MUTSOUT
MUTMOUT
DESCRIPTION
7
6
5
4
3
2
1
0
this bit is not used and should be set to logic 1
Mute I
2
S-bus output:
when MUTI
2
S = 1 it mutes the I
2
S-bus output
these 3 bits are not used and should be set to logic 1
Mute Stereo Output:
if MUTSOUT = 1 the analog stereo output is muted
Mute Mono Output:
if MUTMOUT = 1 the analog mono output is muted
this bit is not used and should be set to logic 1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9874H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
| TDA9875 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| 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(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 |
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