IC Data Sheets
8
.
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, TDA9
88
5 (IC U10)
Figure
8
-1 Internal block diagram and pin configuration
1
8
9
3
0_
3
00_100
3
0
8
.ep
s
100
3
0
8
Block diagram
Pinning information
1
2
3
4
5
6
7
8
9
10
11
12
24
2
3
22
21
20
19
1
8
17
16
15
14
1
3
TDA9885T
n.c.
VIF2
OP1
FMPLL
DEEM
AFD
DGND
AUD
TOP
S
DA
S
CL
S
IOMAD
S
IF2
S
IF1
OP2
AFC
VP
VPLL
AGND
CVB
S
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
CVAGC(pos)
CAGC(neg)
CBL
VAGC
(1)
TOP
14
VPLL
19
1
2
15
6
1
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]
CAF
SIOMAD
SDA
SCL
MAD
VP
CAGC
13
n.c.
AGND
7
DGND
OUTPUT
PORTS
I
2
C-BUS TRANSCEIVER
22
3
L
L
P
M
F
2
P
O
1
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
