TDA9874A Philips Semiconductors, TDA9874A Datasheet - Page 34

• Manufacturer Part Number: TDA9874A
• Description: Digital TV sound demodulator/decoder
• Manufacturer: Philips Semiconductors

Philips Semiconductors
10.3.7
This register should not be used when applying ESP. The default setting after power-on reset is ‘0000 0000’.
Table 26 Demodulator configuration register (subaddress 9)
Table 27 Description of the DCONR bits
Table 28 Identification mode
Table 29 Channel 2 receive mode
1999 Dec 03
CH2MOD1
Digital TV sound demodulator/decoder
IDMOD1
IDMOD1
BIT
7
7
6
5
4
3
2
1
0
0
0
1
1
0
0
1
D
EMODULATOR
CH1MODE
CH2MOD1
CH2MOD0
CH2MOD0
SYMBOL
FILTBW1
FILTBW0
IDMOD0
IDMOD1
IDMOD0
IDMOD0
IDAREA
6
0
1
0
1
0
1
0
C
ONFIGURATION
Identification mode for FM sound: these bits define the integrator time of the FM
identification. A valid result may be expected after twice this time has expired, at the
latest. The longer the time, the more reliable the identification; see Table 28.
Application area for FM identification: when IDAREA = 1 it selects the FM
identification frequencies in accordance with the specification for Korea. When
IDAREA = 0, frequencies for Europe are selected (B/G and D/K standard).
selects filter bandwidth in accordance with Table 30
Channel 2 receive mode: these bits control the hardware for the second sound carrier
in accordance with Table 29. The NICAM mode employs a wider bandwidth of the
decimation filters than the FM mode.
selects filter bandwidth in accordance with Table 30
Channel 1 receive mode: when CH1MODE = 1 it selects the hardware for the first
sound carrier to operate in AM mode. When CH1MODE = 0 the FM mode is assumed.
This applies to both terrestrial and satellite FM reception.
slow
medium
fast
off/reset, recommended during use of high deviation mode
FM
AM
NICAM
IDAREA
5
R
EGISTER
FILTBW1
(DCONR)
4
34
CH2MOD1
IDENTIFICATION MODE
3
DESCRIPTION
CHANNEL 2
CH2MOD0
2
FILTBW0
Preliminary specification
1
TDA9874A
CH1MODE
0