Hitachi C1422R, Руководство по обслуживанию

Страница: 18 / 133

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