TEA6821T Datasheet, PDF (10/47 Pages) NXP Semiconductors – ICE car radio

Philips Semiconductors
ICE car radio
Preliminary specification
TEA6821T
PINNING
SYMBOL
QDET1
QDET2
TSWITCH
GND
V_P5
HFBUS1
HFBUS2
XTAL1
XTAL2
F_REFP
F_REFN
I_REF
FMIF1IN1
FMIF1IN2
TSDR
TSDS
V_SDS
V_SDR
FMIF2OUT1
FMIF2OUT2
V_REF
AMIF2OUT1
AMIF2OUT2
FMAMDEC
PHASEDET
PILDET
FMAM10.7
V_PIF
PIN
DESCRIPTION
1 demodulator tank
2 demodulator tank
3 time switch
4 analog ground
5 5 V supply voltage
6 HF bus, pull-up to 5 V
7 HF bus, pull-up to 5 V
8 crystal oscillator
9 crystal oscillator
10 PLL reference frequency
11 PLL reference frequency
12 reference current
13 70 MHz FM-IF input
14 70 MHz FM-IF input
15 time constant for SDR
16 time constant for SDS
17 SDS control voltage
18 SDR control voltage
19 FM mixer output
20 FM mixer output
21 reference voltage
22 AM mixer output
23 AM mixer output
24 FM/AM 10.7 MHz decoupling
25 phase detector
26 pilot detector
27 FM/AM 10.7 MHz input
28 V_P IF amplifier
SYMBOL PIN
DESCRIPTION
FMIFAMPOUT 29 FM-IF amplifier output
AFGND
30 AF ground
DEEMPHR
31 de-emphasis capacitor right
DEEMPHL
32 de-emphasis capacitor left
AMIF2IN1
33 AM IF2 input 1
AMIF2IN2
34 AM IF2 input 2
FMIN2
35 FM limiter input
DCFEED
36 DC feed FM limiter
FMIN1
37 FM limiter input
LEVELADJ
38 level adjust
C_AFC
MPBUF
39 AFC capacitor
40 multipath buffer time constant
OUTLEFT
41 AF output left
FMSTOP
42 FMSTOP adjust
RDS/AMSTOP 43 MPX for RDS/AMSTOP adjust
OUTRIGHT
44 AF output right
MPXIN
45 stereo decoder MPX input
IAC_IN
MPXOUT
46 IAC input
47 FM demodulator MPX output
AMAFOUT
48 AM demodulator AF output
V_MUTAML
49 mute voltage / AM level
LEVELUNWEIG 50 level unweighted
I_ACCONTR
V_PDIG
SDA
51 IAC control voltage
52 V_P digital
53 SDA, pull-up to 5 V
SCL
54 SCL, pull-up to 5 V
BUSGND
55 bus ground
V_P8.5
56 V_P 8.5 V
September 1993
10