TDA9874AHB NXP Semiconductors, TDA9874AHB Datasheet - Page 26
TDA9874AHB
Manufacturer Part Number
TDA9874AHB
Description
Audio Amplifiers DIGITAL STEREO DECODER VCR
Manufacturer
NXP Semiconductors
Datasheet
1.TDA9874AHB.pdf
(68 pages)
Specifications of TDA9874AHB
Product
General Purpose Audio Amplifiers
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 20 C
Package / Case
PQFP-44
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
TDA9874AH/V2,557
Philips Semiconductors
7.3.7
This register should not be used when applying ESP. The default setting after Power-on reset is 0000 0000.
Table 24 Demodulator configuration register (subaddress 9)
Table 25 Description of the demodulator configuration register bits
Table 26 Identification mode
Table 27 Channel 2 receive mode
2000 Aug 04
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 CONFIGURATION REGISTER
CH1MODE
CH2MOD1
CH2MOD0
CH2MOD0
SYMBOL
FILTBW1
FILTBW0
IDMOD0
IDMOD1
IDMOD0
IDMOD0
IDAREA
6
0
1
0
1
0
1
0
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 26.
Application area for FM identification: if bit IDAREA = 1 it selects the FM identification
frequencies in accordance with the specification for Korea. If bit IDAREA = 0 the
frequencies for Europe are selected (B/G and D/K standard).
this bit selects the filter bandwidth in accordance with Table 28
Channel 2 receive mode: these bits control the hardware for the second sound carrier in
accordance with Table 27. The NICAM mode employs a wider bandwidth of the
decimation filters than the FM mode.
this bit selects the filter bandwidth in accordance with Table 28
Channel 1 receive mode: if bit CH1MODE = 1 it selects the hardware for the first sound
carrier to operate in AM mode. If bit 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
FILTBW1
4
26
CH2MOD1
IDENTIFICATION MODE
3
DESCRIPTION
CHANNEL 2
CH2MOD0
2
FILTBW0
1
Product specification
TDA9874A
CH1MODE
0