tda9870ah NXP Semiconductors, tda9870ah Datasheet - Page 56
tda9870ah
Manufacturer Part Number
tda9870ah
Description
Digital Tv Sound Processor Dtvsp
Manufacturer
NXP Semiconductors
Datasheet
1.TDA9870AH.pdf
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Philips Semiconductors
10.3.24 C
This register is used to apply the contour or loudness function (physiological volume control) to the left and right signal
channels of the Main channel by means of an extra bass boost. The gain setting must be chosen in accordance with the
volume control setting for the Main channel. For example, the contour gain could be incremented for every 5 dB, or so,
of decrease of the volume setting. This needs to be done by the microcontroller. The 0 dB contour setting is equal to
contour off.
Table 55 Subaddress 28
Note
1. The default setting at power-up is 00000000.
1999 Dec 20
Digital TV Sound Processor (DTVSP)
MSB
B7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ONTOUR CONTROL REGISTER
B6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
B5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
B4
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
B3
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
B2
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
56
B1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
LSB
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
CONTOUR GAIN (dB)
0 (note 1)
Product specification
TDA9870A
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
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