tda8296 NXP Semiconductors, tda8296 Datasheet - Page 43

• Manufacturer Part Number: tda8296
• Description: Tda8296 Digital Global Standard Low If Demodulator For Analog Tv And Fm Radio
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8296
Product data sheet
9.3.14 Chip identification and Standby mode
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
Table 47.
Legend: * = default value.
Bit
7 to 0 D_IF_AGC_STAT[7:0] R
Bit
7 to 0 T_IF_AGC_STAT[7:0] R
Bit
7 to 2 not used
1 to 0 ALT_FILT_COEF
Bit
7 to 0 SSIF_AGC_STAT[7:0] R
Bit
7 to 0 IDENTITY[7:0] R
Bit
7 to 3 -
2
Symbol
Symbol
Symbol
Symbol
Symbol Access Value
-
Symbol
D_IF_AGC_STAT register (address 27h) bit description
T_IF_AGC_STAT register (address 28h) bit description
ALT_FILT_COEF register (address 2Bh) bit description
SSIF_AGC_STAT register (address 2Dh) bit description
IDENTITY register (address 2Fh) bit description
CLB_STDBY register (address 30h) bit description
Digital global standard low IF demodulator for analog TV and FM radio
All information provided in this document is subject to legal disclaimers.
R/W
R/W
Access Value
Rev. 1 — 3 March 2011
0000 0* not used
0*
Access Value
Access Value
Access Value
R/W
R/W
Access Value
1000 1100* chip identification, value corresponds to TDA8296
Description
reserved, must be set to logic 0
-
-
-
0
00
01
10
Description
Description
not used.
internal selection of fixed
coefficients for video low
pass filter using an ADC
sampling frequency of
Description
D_IF_AGC_STAT is the digital IF AGC status
readout byte. Contains the digital IF AGC loop
DC information. The format is twos
complement. To get the internal gain in dB, the
following formula can be used:
Description
T_IF_AGC_STAT is the IF AGC status readout
byte. Contains the tuner IF AGC loop DC
information. The format is offset binary.
Description
SSIF_AGC_STAT contains the SSIF AGC gain
information. To get the internal gain in dB, the
following formula can be used:
approximately the PC / SC ratio.
gain
gain
=
=
D_IF_AGC_STAT
------------------------------------------------------- - (dB)
20
log
10
SSIF_AGC_STAT
------------------------------------------ -
3.675
8
+
TDA8296
50
© NXP B.V. 2011. All rights reserved.
Frequency
54.00 MHz
50.75 MHz
57.25 MHz
. The value is
.
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