TEA6886 查看數據表（PDF） - Philips Electronics

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TEA6886

Up-level Car radio Analog Signal Processor (CASP)

Philips Electronics 

Philips Semiconductors

Up-level Car radio Analog Signal

Processor (CASP)

5 BLOCK DIAGRAM

Product specification

TEA6886HL

handbook, full pagewidth

from

NICE

(AFSAMPLE)

fref

(75.4 kHz)

100

10

470 kΩ nF

nF

68 kΩ

100 nF

6.8 nF

6.8 nF

100 100

nF kΩ

22

nF

from

NICE

(FMHOLD)

FMHOLD 63

AM

mono

input

33 nF 220 kΩ AMHIN 64

AMNBIN 65

220 nF TMUTE 66

10 nF

MPXRDS 67

10 µF

MPX

input

RIN 182 kΩ

TSNC 68

100 kΩ 82 kΩ MPXIN 69

220 33 pF

nF

10 nF FMNCAP 70

3.3 nF

3.3 nF

2.7 nF

2.7 nF

4.7 nF

4.7 nF

DEEML 71

DEEMR 72

FMLBUF 73

FMRBUF 74

TWBAM1 75

TUSN1 76

I2C-bus

to NICE

SDAQ 77

59

58 57 56

55

120 kHz

HIGH-PASS

AMPLIFIER

AGC

PULSE

SEPARATOR

trigger sensitivity

NOISE

AND

INTERFERENCE

DETECTOR

FM

PULSE

FORMER

60 kHz

HIGH-PASS

AND

USN

DETECTOR

sensitivity

pilot

STEREO

ind.

DECODER

PLL

19 kHz

38 kHz

INPUT BUFFER

AND

80 kHz

LOW-PASS

sep.adj.

mute slope

mute start

V/I

CONVERTER

start/

slope

TEA6886HL

MATRIX

AND

SOFT-MUTE

38 kHz

SNC

FM BUFFER

AND

FM NB-GATES

50/75 µs

DE-EMPHASIS

AND

AM STEREO INPUT

de-emphasis

switch

HCC

STEREO

DECODER

OUTPUT

start /

slope

BUS

LEVEL

ADC

(6-BIT)

bus controls

I2C-BUS

AND

CONTROL LOGIC

detector hold

detector reset

test

3

4

56 7

LEVEL

INPUT

BUFFER

20 kHz

BAND-PASS

AND

AMWB

DETECTOR

sensitivity

54

53

AM

GATE

test

AVERAGE

DETECTOR

(MUTE/HCC)

52

A

B

PEAK

DETECTOR

(SNC)

detector

hold

PEAK

DETECTOR

(WBAM2)

PEAK

DETECTOR

(USN2)

AVERAGE

DETECTOR

(WBAM1)

C

D

detector

reset

E

detector

hold

AVERAGE

DETECTOR

(USN1)

F

G

H

8

I2C-bus

to NICE

from AM/FM

level detector

I2C-bus

22 kΩ

22 kΩ

VDD(5 V)

10 nF

MHB818

Fig.1 Block diagram (continued in Fig.2).

2000 Nov 21

5

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