TEA6880 Philips Semiconductors, TEA6880 Datasheet - Page 5

• Manufacturer Part Number: TEA6880
• Description: Up-level Car radio Analog Signal Processor CASP
• Manufacturer: Philips Semiconductors

Philips Semiconductors
5
2000 May 08
handbook, full pagewidth
Up-level Car radio Analog Signal
Processor (CASP)
MPX
input
MPXRDS
mono
input
AMNBIN
BLOCK DIAGRAM
AM
220 nF
R IN 182 k
33 nF
100 k
33 pF
10 nF
220 k
3.3 nF
3.3 nF
2.7 nF
2.7 nF
4.7 nF
4.7 nF
82 k
220 nF
10 nF
10 F
(for RDS update)
52
53
54
55
56
57
58
59
60
61
62
63
64
processing hold
audio
51
bus controls
sensitivity
to NICE
I
2
sep.adj.
C-bus
1
INPUT BUFFER
SEPARATOR
HIGH-PASS
HIGH-PASS
DETECTOR
AMPLIFIER
LOW-PASS
2
120 kHz
PULSE
80 kHz
60 kHz
mute slope
(AFSAMPLE)
USN
mute start
level detector
&
&
from AM/FM
NICE
AGC
from
3
470 k
CONTROL LOGIC
Fig.1 Block diagram (continued in Fig.2).
100 nF
50
I
2
C-BUS
I
AM STEREO INPUT
2
&
C-bus
4
FM NB-GATES
DE-EMPHASIS
CONVERTER
SOFT-MUTE
FM BUFFER
DECODER
(75.4 kHz)
STEREO
50/75 s
MATRIX
5
49 48 47
PLL
f ref
V/I
&
&
&
19 kHz
6
de-emphasis
switch
22 k
22 k
V DD(I
10 nF
detector hold
detector reset
test
68 k
100 nF
38 kHz
2
C-bus)
pilot
ind.
INTERFERENCE
trigger sensitivity
DETECTOR
NOISE
5
&
DECODER
STEREO
OUTPUT
SNC
HCC
38 kHz
slope
start/
FORMER
start/
slope
PULSE
BUFFER
TEA6880H
FM
LEVEL
INPUT
LEVEL
(6-BIT)
ADC
BUS
sensitivity
BAND-PASS
DETECTOR
20 kHz
AMWB
&
46
6.8 nF
7
10 nF
45
6.8 nF
(MUTE/HCC)
DETECTOR
DETECTOR
DETECTOR
DETECTOR
DETECTOR
DETECTOR
AVERAGE
AVERAGE
AVERAGE
(WBAM2)
(WBAM1)
(USN2)
(USN1)
Product specification
GATE
PEAK
(SNC)
PEAK
PEAK
AM
TEA6880H
100
nF
test
44
100
k
detector
reset
detector
hold
detector
hold
MHB427
43
22
nF
C
D
G
H
A
B
E
F