U4479B Datasheet, PDF (2/11 Pages) TEMIC Semiconductors – DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing

U4479B
Block Diagram
AFC
Loop
filter
IF 1
IF 2
Ref
(DVB)
Tuner
SIF
25
19
AFC
FPLL
5
6
9
10
14
28
7
12
Tuner
AGC
11
AGC:
QAM
neg./pos.
1
2
23
22
VCO
I²C
20
PLL
18
13
CVBS
or
2nd IF (DVB)
17
16
Control
15
27
26
Frequ.
switch
Standard
Input
select
FM
AM
V_S
24
Band
Gap
3
SIF
AGC
4
8
21
95 9816
Figure 1. Block diagram
2 (11)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A2, 14-Jan-98