tda9870ah NXP Semiconductors, tda9870ah Datasheet - Page 40

• Manufacturer Part Number: tda9870ah
• Description: Digital Tv Sound Processor Dtvsp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 26 De-emphasis sound carrier 1
10.3.8
This register is used to select the proper dematrixing characteristics as appropriate for the standard of the received
carrier and the related sound mode identification.
Table 27 Subaddress 11 (note 1)
Note
1. The default setting at power-up is 00000000.
Table 28 Dematrixing characteristics
Notes
1. CH1 input: audio signal from FM channel 1.
2. CH2 input: audio signal from FM channel 2.
3. For stereo Korea the dematrix applies 6 dB attenuation (see Table 6).
1999 Dec 20
Digital TV Sound Processor (DTVSP)
7 (MSB)
0 (LSB)
B2
0
0
0
0
1
1
BIT
B2
0
0
0
0
1
6
5
4
3
2
1
FM
B1
MATRIX REGISTER
0
0
1
1
0
0
NAME
B1
B7
B6
B5
B4
B3
B2
B1
B0
0
0
1
1
0
B0
0
1
0
1
0
1
CH1 input; note 1
CH2 input; note 2
CH1 input; note 1
CH2 input; note 2
2CH1 input
CH1 input
---------------------------------------------------------- -
VALUE
B0
0
1
0
1
0
0
0
0
0
0
L OUTPUT
+
2
CH2 input
default value
default value
default value
default value
default value
dematrixing characteristics (see Table 28)
CH2 input
40
CH1 input; note 1
CH2 input; note 2
CH2 input; note 2
CH1 input; note 1
CH2 input; note 2
CH1 input CH2 input
---------------------------------------------------------- -
R OUTPUT
–
2
75 s (M standard)
DE-EMPHASIS
DESCRIPTION
50 s (Europe)
60 s
J17
off
mono 1
mono 2
dual
dual swapped
stereo Europe
stereo Korea; note 3
Product specification
TDA9870A
MODE