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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)： | 73/88頁 |
| 文件大?。?/td> | 362K |
| 代理商： | TDA9870A |
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1998 Aug 10
73
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9870A
10.3.40 B
ASS BOOST CONTROL REGISTER
10.3.40.1 Description
This register is used to select from a few sample bass boost settings to modify the frequency characteristics of the Main
channel (shelving filter). Bits B3 to B0 apply to the left channel, bits B7 to B4 apply to the right channel. This function
must be used with care in order to avoid clipping distortion at high volume settings.
More sophisticated control of the bass boost filter can be exercised in the expert mode (see Section 10.5). The user then
has full control over this 2nd-order filter and can, within limits, realize bass equalizers with arbitrary centre frequencies,
Q factors and boost/cut settings.
10.3.40.2 Definition
Table 86
Subaddress 45 (note 1; see Table 87)
Note
1.
The default setting at power-up is 00000000.
Table 87
Gain setting
MSB
LSB
B7
B6
B5
B4
B3
B2
B1
B0
B7 AND B3
B6 AND B2
B5 AND B1
B4 AND B0
GAIN SETTING (dB)
CORNER FREQUENCY (Hz)
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
20
18
16
14
12
10
8
6
4
2
0
350
350
350
350
350
350
350
350
350
350
350
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相關代理商/技術參數(shù) |
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| TDA9873 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard dual carrier stereo sound decoder |
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| TDA9873HS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard dual carrier stereo sound decoder |
| TDA9874A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
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