Hitachi C1422R/RS Wartungshandbuch Seite 18

TDA884X Video Processor
Pin Designation
1 SNDIF
2 AUDIOEXT
3 NC
4 NC
5 PLLLF
6 IFVO
7 SCL
8 SDA
9 DEC
BG
10 CHROMA
11 CVBS/Y
12 V
P1
13 CVBS
INT
14 GND 1
15 AUDIOOUT
16 SECPLL
17 CVBS
EXT
18 BLKIN
19 BO
20 GO
21 RO
22 BCLIN
23 RI
24 GI
25 BI
27 RGBIN
27 LUMIN
28 LUMOUT
29 BYO
30 RYO
31 BYI
32 RYI
33 REFO
34 XTAL1
35 XTAL2
36 DET
37 V
P2
38 CVBS1O
39 DECDIG
40 HOUT
41 FBISO
42 PH2LF
43 PH1LF
44 GND2
45 EWD
46 VDRB
47 VDRA
48 IFIN1
49I FIN2
50 EHTO
51 VSC
52 I
REF
53 DEC
AGC
54 AGCOUT
55 AUDEEM
56 DECSDEM
Table 2 – TDA884X Pin Designations
I/O Description
I Sound IF
I External Audio
Not Connected
Not Connected
IF-PLL loop filter
O IF Video
I Serial Clock
I/O Serial data
Bandgap de-coupling
I Chrominance
I External CVBS/Y
Main supply voltage 1 (+8V)
I Internal CVBS
Ground 1
O Audio
SECAM PLL de-coupling
I External CVBS
I Black-current
O Blue
O Green
O Red
I Beam current limiter input/V-guard input
I Red input for insertion
I Green input for insertion
I Blue input for insertion
I RGB insertion
I Luminance
O Luminance
O (B-Y) signal
O (R-Y) signal
I (B-Y) signal
I (R-Y) signal
O Sub-carrier reference
3.58MHz crystal connection
4.43/3.58MHz crystal connection
Loop filter phase detector
2nd supply voltage 1 (+8V)
O CVBS-1
De-coupling digital supply
O Horizontal
I/O Flyback input/sandcastle output
Phase-2 filter
Phase-1 filter
Ground 2
O East-west drive
O Vertical drive B
O Vertical drive A
I IF input 1
I IF input 2
I EHT overvoltage protection
Vertical sawtooth capacitor
I Reference current
AGC de-coupling capacitor
O Tuner AGC
Audio de-emphasis
De-coupling sound demodulator
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