IC Data Sheets
EN 35RAM1.0L LA 8.
2010-Jul-02
8. IC Data Sheets
This section shows the internal block diagrams and pin
configurations of ICs that are drawn as “black boxes” in the
electrical diagrams (with the exception of “memory” and “logic”
ICs).
8.1 Diagram B05, TDA9885 (IC U10)
Figure 8-1 Internal block diagram and pin configuration
18930_300_100308.eps
100308
Block diagram
Pinning information
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
TDA9885T
n.c.
VIF2
OP1
FMPLL
DEEM
AFD
DGND
AUD
TOP
SDA
SCL
SIOMAD
SIF2
SIF1
OP2
AFC
V
P
VPLL
AGND
CVBS
VAGC
REF
TAGC
n.c.
DIGITAL VCO CONTROL AFC DETECTOR
RC VCO
VIF-PLL
VIF-AGC
TUNER AGC
SUPPLY SIF AGC
AUDIO PROCESSING
AND SWITCHES
NARROW-BAND
FM-PLL DEMODULATOR
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
SOUND TRAPS
4.5 to 6.5 MHz
TAGC
C
VAGC(pos)
C
AGC(neg)
C
BL
VAGC
(1)
TOP
14
VPLL
19 121561 9
4
10
11
12
18
20
2
1
17
8
5
6
external reference signal
or 4 MHz crystal
REF AFC
AUD
CVBS
audio output
video output: 2 V (p-p)
[1.1 V (p-p) without trap]
C
AF
SIOMAD
SDASCL
MAD
V
P
C
AGC
13
n.c.
AGND
7
DGND
OUTPUT
PORTS
I
2
C-BUS TRANSCEIVER
223
L
L
PMF2
P
O1
P
O
DEEM
AFD
sound intercarrier output
and MAD select
FM-PLL
filter
VIF-PLL
filter
de-emphasis
network
VIF2
n.c.
24
23
SIF2
SIF1
TDA9885
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