Hitachi VT-FX8000E Service Manual page 80

3. CCD uP (1C4301)
Fe io') Fane Abbreviation Function
1 I Pulse H. SYNC H.SYNC inversion input
2 I Pulse | V.SYNC V.SYNC inversion input
3 oO Hi/Lo | MESECAM DET OSD chroma addition, Closed Caption through mode.
Expansion output of MAIN wP MESECAM DET input. MESECA\
4 ce) Hi/Lo MAP LED Lights when NAVI data retrieval and registration are completed: "H'
During retrieval: Blinks
5 Oo Pulse | OSD CS OSD IC chip selection
6 ie} Pulse OSD/CM DATA OUT | Data output to OSD IC and CM microprocessor
7 ie) Pulse | OSD/CM CLOCK Clock used to transfer data to OSD IC and CM microprocessor
- 8 t Pulse CM DATA IN Data input from CM microprocessor
9 I Hi/Lo CM EVENT CM EVENT input
10 I Hi/Lo P. STOP Power failure detection input
1t ie) = NC
12 | oO] Hilo | CMLED CM LED output (unused)
13 ie] Hi/Lo | EE MONI €E monitor: "H"
14 | - AVCC Power supply of analog circuits
15 | 0 =i HLF For the connection of fitter
16 l - VHOLD For the connection of capacitor
7 I a CVIN Video signal input
18 | = CNVSS Ground
19 I - XIN 8MHz oscillator input/output
20 fe} = XOUT
24 = a GND Ground
22 | ASV - VCC Power supply (A5V)
23 oO Hi/Lo | L3/L3 Video switching output for EE monitor, L1/TUN; "L",
24 | 0 Hi/Lo | LINE/TUN Video switching output for EE monitor, Line: "L", TUN:
25 | Lo RESET Reset input. RESET: "L"
26 oO Hi/Lo REC LED Lights during REC, REC PAUSE, TIMER REC, IRT: "H".
Off during V.DUB, V.DUB PAUSE, A.DUB, A.DUB PAUSE: "L".
a7 {oe} Hi/Lo | TIMLED Lights during timer standby: "H"
28 {e) Hi/Lo | PB VP Plus/NAVI DATA switching output. During PLAY (VP Plus through): "H"
29 fo) Hi/Lo BLUE BACK VP Plus/NAVI DATA switching output: Expansion output of MAIN uP
BLUE BACK output. During no signal (VP Plus through): "H"
30 | Pulse | CCD, ENABLE CCD microprocessor enable input from MAIN P
31 ie) = NC
32 ie} Pulse | 12 CCLK Communications with EEPROM
33 io) Hi/Lo X'TAL CHANGE OSD 4fsc oscillator switching. Expansion of MAIN uP X'TAL CHANGE output.
PAL: "H", NTSC: "L"
34 | VO| Pulse | lC DATA Communications with EEPROM
35 ie) Pulse | A.N. BLANK Blank output for NAVI data
36 t Pulse | DATAIN (M-> C) Data input from MAIN pP
37 ie} Pulse | DATAOUT(C->™M) | Data output to MAIN uP
{ 38 t Pulse | CLOCK IN Clock for communications with MAIN uP
: 39 oO Pulse | C. BLANK Blank output for Closed Caption
40 ie) Putse c.co Closed Caption output
41 ie} = NC
42 ie} Pulse | A.N. CO NAVI data output