tda9898 NXP Semiconductors, tda9898 Datasheet - Page 28
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tda9898
Manufacturer Part Number
tda9898
Description
Multistandard Hybrid If Processing Semiconductors
Manufacturer
NXP Semiconductors
Datasheet
1.TDA9898.pdf
(103 pages)
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NXP Semiconductors
TDA9897_TDA9898_3
Product data sheet
Table 26.
Table 27.
Table 28.
Bit
MOD
W2[7]
0
0
1
1
Bit
7
6
5
4
3
2
1 and 0
RESCAR
7
VIF PLL gating and detector mode
W3 - data write register bit allocation
W3 - data write register bit description
PLL
W2[2]
0
1
0
1
Symbol
RESCAR
AMUTE
FMUTE
FMWIDE0
DEEMT
DEEM
AGAIN[1:0]
AMUTE
6
Rev. 03 — 11 January 2008
Gating and detector mode
0 % gating in positive modulation mode (W2[1] = 1)
36 % gating in positive modulation mode (W2[1] = 1)
f
f
PC
PC
mode on; optimized for overmodulation in negative modulation mode;
mode off; optimized for multipath in negative modulation mode;
FMUTE
= 0 kHz
= 0 kHz
5
Description
video gain correction for residual carrier
auto mute
forced mute
FM window (W6[3] = 0)
de-emphasis time
de-emphasis
audio gain
1 = 20 % residual carrier
0 = 10 % residual carrier
1 = on
0 = off
1 = on
0 = off
1 = 475 kHz; normal FM phase detector steepness
0 = 237.5 kHz; high FM phase detector steepness
1 = 50 s
0 = 75 s
1 = on
0 = off
00 = 0 dB
01 = 6 dB
10 = 12 dB (only for FM mode)
11 = 18 dB (only for FM mode)
FMWIDE0
187.5 kHz
187.5 kHz
4
DEEMT
TDA9897; TDA9898
3
Multistandard hybrid IF processing
DEEM
2
AGAIN1
© NXP B.V. 2008. All rights reserved.
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AGAIN0
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