TDA9874AH/V2,557 NXP Semiconductors, TDA9874AH/V2,557 Datasheet - Page 18

• Manufacturer Part Number: TDA9874AH/V2,557
• Description: IC SOUND DEMOD/DECODE 44PQFP
• Manufacturer: NXP Semiconductors
• Type: Demodulatorr

Specifications of TDA9874AH/V2,557

• Applications: TV
• Mounting Type: Surface Mount
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935263704557; TDA9874AHB; TDA9874AHB

Philips Semiconductors
7.3.1.2
This facility simplifies programming by reducing the
amount of data to be set-up and transferred via the
I
Subaddress 255 gives control of most standard dependent
settings of the IC; see ESP register in Section 7.3.23.
Table 10 Programming the TDA9874A by using ESP and automatic FM dematrixing
2000 Aug 04
2
0
1
2
3 to 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
255
NUMBER
C-bus.
Digital TV sound demodulator/decoder
REGISTER
Using Easy Standard Programming (ESP)
AGCGR
GCONR
MSR
FMMR
C1OLAR
C2OLAR
NCONR
NOLAR
NLELR
NUELR
AMCONR
SDACOSR set SDACOSR = 81H to select +6 dB gain (see Table 46) and NICAM or FM output
AOSR
DAICONR
I
I
MDACOSR Set MDACOSR = 82H to select dual A or set MDACOSR = 83H to select dual B (if dual
ESP
2
2
SOSR
SOLAR
NAME
Set AGCGR = 20H for using the 10 dB attenuator at the SIF input, otherwise write a 00H to
this register.
Select the chosen SIF input pin by writing data to bit SIFSEL (bit 0) and choose the AGC
decay time corresponding to your application by writing the appropriate data to
bit AGCSLOW (bit 2).
set this register according to your sound mode detection algorithm
do NOT write data to these registers while using ESP
set FMMR = 80H to choose automatic FM dematrixing
see Table 36
see Table 37
set NCONR = 04H to select FM source automatically if NICAM is not available
see Table 40
set NLELR = 14H (default setting after Power-on reset) if no other value is chosen
set NUELR = 50H (default setting after Power-on reset) if no other value is chosen
set AMCONR = F9H to enable all analog outputs
To select an internal source set AOSR = 80H to select dual A or set AOSR = C0H to select
dual B (if dual mode is transmitted) to all analog outputs. For selecting an external source
see Section 7.3.18.
use only for I
use only for I
use only for I
mode is transmitted) to all analog outputs. For selecting an external source see
Section 7.3.22.
see detailed description in Section 7.3.23
2
2
2
S-bus output, see detailed description in Section 7.3.19
S-bus output, see detailed description in Section 7.3.20
S-bus output, see detailed description in Section 7.3.21
18
CONTENT OF REGISTER
When using ESP it is recommended not to write data to
subaddresses 3 to 10.
A possible programming flow for using ESP and automatic
FM dematrixing (bit TVSM = 1 and bit IDSWFM = 1) is
shown in Table 10. It should be noted that the NICAM
configuration register and the level adjustment registers for
FM and NICAM are not affected by ESP.
Product specification
TDA9874A