参数资料
型号: TDA9897HN/V2
厂商: NXP SEMICONDUCTORS
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC48
封装: 7 X 7 MM, 0.85 MM HEIGHT, PLASTIC, SOT619-1, MO-220, HVQFN-48
文件页数: 25/103页
文件大小: 511K
代理商: TDA9897HN/V2
TDA9897_TDA9898_3
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
28 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
Table 26.
VIF PLL gating and detector mode
Bit
Gating and detector mode
MOD
PLL
W2[7]
W2[2]
0
0 % gating in positive modulation mode (W2[1] = 1)
0
1
36 % gating in positive modulation mode (W2[1] = 1)
10
π mode on; optimized for overmodulation in negative modulation mode;
fPC = 0 kHz ± 187.5 kHz
11
π mode off; optimized for multipath in negative modulation mode;
fPC = 0 kHz ± 187.5 kHz
Table 27.
W3 - data write register bit allocation
7
6
5
4
3
2
1
0
RESCAR
AMUTE
FMUTE
FMWIDE0
DEEMT
DEEM
AGAIN1
AGAIN0
Table 28.
W3 - data write register bit description
Bit
Symbol
Description
7
RESCAR
video gain correction for residual carrier
1 = 20 % residual carrier
0 = 10 % residual carrier
6
AMUTE
auto mute
1=on
0 = off
5
FMUTE
forced mute
1=on
0 = off
4
FMWIDE0
FM window (W6[3] = 0)
1 = 475 kHz; normal FM phase detector steepness
0 = 237.5 kHz; high FM phase detector steepness
3
DEEMT
de-emphasis time
1=50
s
0=75
s
2
DEEM
de-emphasis
1=on
0 = off
1 and 0
AGAIN[1:0]
audio gain
00=0dB
01 =
6dB
10 =
12 dB (only for FM mode)
11 =
18 dB (only for FM mode)
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