tda8295 NXP Semiconductors, tda8295 Datasheet - Page 40

• Manufacturer Part Number: tda8295
• Description: Tda8295 Digital Global Standard Low If Demodulator For Analog Tv And Fm Radio
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8295_1
Product data sheet
Table 43.
[1]
Table 44.
Deviation from nominal
IF frequency
f
f
:
f
f
:
f
f
f
:
f
f
:
f
f
Bit
7 and 6 -
5
4
3
2
1
0
IF
IF
IF
IF
IF
IF
IF
IF
IF
IF
IF
= f
= f
= f
= f
= f
= f
= f
= f
= f
= f
= f
See
nom
nom
nom
nom
nom
nom
nom
nom
nom
nom
nom
Section 12
+ 13.2 kHz
+ 830.6 kHz
+ 843.8 kHz
+ 1674.3 kHz
+ 1687.5 kHz
Symbol
NOISE_DET R
MAC_DET
FIDT
V_LOCK
F_H_LOCK
N_H_LOCK
1674.3 kHz
1661.1 kHz
830.6 kHz
817.4 kHz
13.2 kHz
Calculation of frequency deviation from AFC value
HVPLL_STAT register (address 26h) bit description
[1]
Digital global standard low IF demodulator for analog TV and FM radio
for nominal IF frequencies.
Access Value
R
R
R
R
R
R
Rev. 01 — 4 February 2008
AFC[7] AFC[6] AFC[5] AFC[4] AFC[3] AFC[2] AFC[1] AFC[0]
0
0
:
0
0
:
0
0
1
:
1
1
:
1
1
-
-
-
-
-
-
-
1
1
:
0
0
:
0
0
1
:
1
1
:
0
0
Description
not used
This flag gets HIGH in case the video S/N (weighted)
drops below 30 dB. For proper and noise free video
signals it stays LOW. It can be used for debugging and
other purposes.
This flag indicates the presence of copy-guarded video
content from STBs or VCRs. It can be used for
debugging and other purposes.
This flag indicates the frame rate (50 Hz or 60 Hz).
When active, 60 Hz is detected. It can be used for
debugging and other purposes.
This flag is active, if a proper frame (50 Hz or 60 Hz) is
detected. It can be used for debugging and other
purposes.
This flag is active, if a proper H-sync (15.625 kHz or
15.734 kHz) is detected (Fast mode). It can be used for
debugging and other purposes.
This flag is active, if a proper H-sync (15.625 kHz or
15.734 kHz) is detected (Normal mode). It can be used
for debugging and other purposes.
1
1
:
1
1
:
0
0
1
:
0
0
:
0
0
1
1
:
1
1
:
0
0
1
:
0
0
:
0
0
1
1
:
1
1
:
0
0
1
:
0
0
:
0
0
1
1
:
1
1
:
0
0
1
:
0
0
:
0
0
TDA8295
© NXP B.V. 2008. All rights reserved.
1
1
:
1
1
:
0
0
1
:
0
0
:
0
0
1
0
:
1
0
:
1
0
1
:
1
0
:
1
0
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