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: 31/103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
33 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
[1]
In integral TAGC loop mode the pin TAGC provides sink and source currents for control. TakeOver Point
(TOP) is set via register W9 TOPNEG[4:0].
[2]
For bit description refer to Table 16 and Table 17.
[1]
For bit description of MOD refer to Table 23 W2[7] and Table 24.
Table 37.
W6 - data write register bit allocation
7
6
5
4
3
2
1
0
TAGC1
TAGC0
AGC2
AGC1
FMWIDE1
TWOFLO
0
DIRECT
Table 38.
W6 - data write register bit description
Bit
Symbol
Description
7 and 6
TAGC[1:0]
tuner AGC mode[1]
00 = TAGC integral loop mode; all currents off
01 = TAGC integral loop mode; source current off
10 = TAGC integral loop mode
11 = TAGC derived from IF AGC; recommended for positive
modulated signals
5 and 4
AGC[2:1]
AGC mode and behavior; see Table 39
3
FMWIDE1
FM window
1=1MHz
0 = see Table 28 bit FMWIDE0
2
TWOFLO
synthesizer frequency selection
1 = zero IF Japan mode (57 MHz)
0 = synthesizer mode
1
-
0 = xed value
0
DIRECT
direct IF at DTV mode; TV2 = 0[2]
1 = direct IF output
0 = zero IF or low IF output
Table 39.
AGC mode and behavior
Bit
VIF AGC; MOD = 1[1]
SIF AGC
AGC2
AGC1
W6[5]
W6[4]
0
normal
0
1
off (minimum gain)
1
0
fast
normal
1
2nd fast
fast
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TDA9897V2 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
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