tda9874h NXP Semiconductors, tda9874h Datasheet - Page 24

• Manufacturer Part Number: tda9874h
• Description: Digital Tv Sound Demodulator/decoder
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7.3.8
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. For the dematrixing, it is assumed that the output from sound carrier 1
is on channel L input. The unused bits should be set to logic 0.
The default setting at power-up is 0000 0000.
Table 28 FM dematrix register (subaddress 11)
Table 29 Description of the FM dematrix register bits
Table 30 Selection of the dematrixing characteristics
2000 Jun 26
Digital TV sound demodulator/decoder
FDMS2
BIT
7
7
6
5
4
3
2
1
0
0
0
0
0
1
1
FM
DEMATRIX REGISTER
SYMBOL
FDMS1
FDMS2
FDMS1
FDMS0
0
0
1
1
0
0
6
these bits are not used and should be set to logic 0
Dematrixing characteristics select: the state of these 3 bits select the dematrixing
characteristics (see Table 30).
FDMS0
0
1
0
1
0
1
5
2L input R input
L input
------------------------------------------ -
L OUTPUT
4
R input
R input
L input
L input
+
2
–
R input
24
3
DESCRIPTION
L input R input
------------------------------------------ -
R OUTPUT
FDMS2
R input
R input
R input
L input
L input
–
2
2
FDMS1
forced mono
mono 2
dual
dual swapped
stereo Europe
stereo Korea
1
Product specification
TDA9874H
MODE
FDMS0
0