參數(shù)資料
型號: TDA9897HN/V2
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝: 7 X 7 MM, 0.85 MM HEIGHT, PLASTIC, SOT619-1, MO-220, HVQFN-48
文件頁數(shù): 17/103頁
文件大?。?/td> 511K
代理商: TDA9897HN/V2
TDA9897_TDA9898_3
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
20 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
[1]
fnom is the nominal frequency.
[2]
In ATV mode f means vision intermediate frequency; in radio mode f means radio intermediate frequency.
Table 8.
Automatic frequency control bits[1]
Bit
AFC4
AFC3
AFC2
AFC1
R1[4]
R1[3]
R1[2]
R1[1]
0111
≤ (fnom 187.5 kHz)
0110fnom 162.5 kHz
0101fnom 137.5 kHz
0100fnom 112.5 kHz
0011fnom 87.5 kHz
0010fnom 62.5 kHz
0001fnom 37.5 kHz
0000fnom 12.5 kHz
1111fnom + 12.5 kHz
1110fnom + 37.5 kHz
1101fnom + 62.5 kHz
1100fnom + 87.5 kHz
1011fnom + 112.5 kHz
1010fnom + 137.5 kHz
1001fnom + 162.5 kHz
1000
≥ (fnom + 187.5 kHz)
Table 9.
R2 - data read register 2 bit allocation
7
6
5
4
3
2
1
0
reserved
TAGC
VAGC5
VAGC4
VAGC3
VAGC2
VAGC1
VAGC0
Table 10.
R2 - data read register 2 bit description
Bit
Symbol
Description
7
-
reserved
6
TAGC
tuner AGC
1 = active
0 = inactive
5 to 0
VAGC[5:0]
AGC level detector; VIF AGC in ATV mode, SIF AGC in radio mode
and DIF AGC in DTV mode; see Table 11
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