Diagram B03B, Tda9898Hl (Ic 7T57) - Philips 32PFL9432/98 Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets

9.11.5 Diagram B03B, TDA9898HL (IC 7T57)

Block Diagram
SDA SCL i.c. ADRSEL
23 24 14 25
2
I C-BUS
TDA9897
AM average
36
SIF AGC
AGCDIN
FM peak
3
IF3A
4
IF3B
6
IF1A
VIF AGC
7
IF1B
9
IF2A
10
IF2B
DECODER
45
i.c.
PEAK RSSI
AGC DETECTOR
TUNER
AND
IF BASED
TUNER
47
TAGC
AGC
48 2, 5, 18, 37
GND
n.c.
Pin Configuration
BVS GNDD
32 22
sideband
Q
SIDEBAND
I
FILTER
sideband
I
NYQUIST
Q
FILTER
VIF
2
I C-BUS
VIF PLL AFC
TOPNEG
AND
ACQUISITION
HELP
2
I C-BUS TOP2
AND RSSI
8 1 1 1 3
CTAGC T O P 2 L F V F I
optional tuner
AGC TOP for
IF based tuner
AGC and
radio signal
strength detector
onset
L F S Y N 2 1
. n . c 2
F I 3 A 3
F I 3 B 4
(1)
CIFAGC 5
F I 1 A 6
F I 1 B 7
C T A G C 8
F I 2 A 9
F I 2 B 10
T O P 2 11
M P P 1 12
Figure 9-33 Pin configuration
LFSYN2 V GNDA
P
1 43, 44 40, 41
SYNTHESIZER
SUPPLY
AND VCO
A A
B B
TDA9897
C C
BAND-PASS
D D
E E
SOUND GROUP
CARRIER DELAY
F F
TRAP EQUALIZER
trap reference
standard
SYNTHESIZER
AND VCO
G G
H H
38
L F S Y N 1
36
35
34
33
32
31
TDA9897HL
TDA9898HL 30
29
28
27
26
25
Q528.1A LA
4 MHz reference
(2)
R
EXTERNAL SOUND
(1)
BAND-PASS FILTER
EXTFILO EXTFILI FREF
15 17 46
4 MHz FREQUENCY
REFERENCE
+3 dB
BP on/off
OUTPUT
SWITCH
FILTER
FM SWITCH
AMPLIFIER
FM CARRIER AGC
AM
AM DEMODULATOR
FM
AND
TAGC
AM
FM NARROW-BAND PLL
SIF AGC
FM AGC
AFC
VIF AGC
35, 42 19
LFFM
n.c.
A G C D N I
. n . c
C A F 2
C V B S
BVS
A U D
O U T 2 B
O U T 2 A
C A F 1
O U T 1 B
O U T 1 A
A D R S E L
9. EN 191
(2)
R
input
OPTXTAL
39
29
OUT2A
30
OUT2B
26
OUT1A
27
OUT1B
21
EXTFMI
34 CAF2
20 CDEEM
31
FM
AUD
28 CAF1
16
MPP2
33
CVBS
12
MPP1
port
2
I C-bus
H_16800_029.eps
111007