Maintenance/ Discontinued

Transcription

1 For Video Equipment Color Video Camera Synchronizing Signal Generator LSI Overview The generates color video camera synchronizing signals for the NTSC, PAL, and SECAM video systems. It divides the reference frequency to generate the horizontal synchronizing signal f H, the vertical synchronizing signal f V, and the composite synchronizing signal. A built-in 4f SC crystal oscillator circuit divides the frequency by four to generate the color subcarrier frequency signals SC1 and SC2. Features Supports CCDs with 420, 510, 590, and 670 H pixels Supports NTSC, PAL, and SECAM video systems PAL system 25Hz offset Includes built-in oscillator circuit using external crystal Generates 14 signals, including the horizontal and vertical synchronizing signals and the color subcarrier frequency signals. Applications Color video cameras Pin Assignment TEST1 TEST2 TEST3 V SS1 CLK V DD1 EO ED CCDS2 CCDS1 CP2 TVMD2 S FMTP WBKL (TOP VIEW) QFP044-P OSCI TVMD1 LSW BFIDP WHD V SS2 SC2 SC1 V DD2 OSCO SDB00064BEM 1

2 For Video Equipment Block Diagram TEST1 TEST2 TEST3 SC1 SC2 LSW V DD2 V DD1 CCDS2 CCDS fSC 1/4 1/3 1/8 1/5 1/7 1/101 1/103 1/2 1/ /525 1/625 fv MIXER fh/fv (P) ød (N) CLK TVMD1 202fH/206fH TVMD2 2fH 2fH fh (P) 1/2 V dec. H dec. (N) C dec. 1/2 1/ OSCO OSCI EO V SS2 V SS1 HD WHD CP2 FMTP S BFIDP 2

3 For Video Equipment Pin Descriptions Pin No. Symbol Pin Name Function Description 39 V DD1 Power supply "H" level (5 V) power supply for horizontal and vertical synchronizing signal circuits 37 V SS1 Power supply "L" level (0 V) power supply for horizontal and vertical synchronizing signal circuits 14 V DD2 Power supply "H" level (5 V) power supply for color subcarrier circuits 17 V SS2 Power supply "L" level (0 V) power supply for color subcarrier circuits 11 OSCI Crystal oscillation input Connect these pins to a 4f SC crystal oscillator. The pins have built-in feedback resistors. 12 OSCO Crystal oscillation input If using an external clock, supply it to the OSCI pin and leave the OSCO pin open. 38 CLK Clock input Supply the reference clock for the horizontal and vertical synchronizing signals. 22 TVMD1 NTSC PAL SECAM Television system TVMD1 "H" "L" "L" 25 TVMD2 selection input TVMD2 "H" "L" The pins include built-in pull-up resistors. 29 CCDS1 420H 510H 590H 670H CCD scan lines CCDS1 "H" "H" "L" "L" 30 CCDS2 selection input CCDS2 "H" "L" "H" "L" The pins include built-in pull-up resistors. 34 TEST1 35 TEST2 Test input 36 TEST3 15 SC1 f SC (B-Y) output 16 SC2 f SC (R-Y) output 28 Composite synchronizing signal output 1 Vertical drive output 18 WHD Wide HD output 27 Composite blanking output 42 HD Horizontal drive output 26 CP2 Clamp pulse output Test inputs Keep these pins at "L" level. The pins include built-in pull-down resistors. This color subcarrier signal is formed by dividing the crystal oscillator frequency (4f SC ) by four. Color subcarrier signal If SC1 is the 180 signal, this signal has the following phase. NTSC system: 90 PAL system: 90 when LSW is at "L" level 270 when LSW is at "H" level Composite blanking signal Vertical drive signal Wide HD signal Preblanking signal Composite blanking signal Signal for erasing video signal Horizontal drive signal Clamp pulses for luminance and color difference signals Horizontal deflection start pulses 3

4 For Video Equipment Pin Descriptions (continued) Pin No. Symbol Pin Name Function Description 9 Composite wide blanking Composite wide blanking signal output 20 BFIDP Output for burst flag/ identification signal 6 Composite preblanking output 21 LSW Line switch signal output 23 FMTP Trigger signal output 24 S Subcarrier blanking signal output During NTSC operation, this pin remains at "L" level. 40 EO Phase comparator output Phase comparator output Operating Modes (1) Television system TVMD1 TVMD2 NTSC H PAL L H SECAM L L (2) CCD pixels and reference clock (CLK) frequencies CCD CLK frequency (MHz) Frequency divider ratio CCDS1 CCDS2 pixels NTSC PAL/SECAM for first stage 420H H H 510H H L 590H L H 670H L L This pin produces blanking pulses wider than the CELK pulses for both horizontal and vertical synchronization. For NTSC and PAL systems, this is the burst flag (BF) output, which gates the color subcarrier signal. For the SECAM system, this is the identification (IDP) signal, which switches the subcarrier waveform. Composite preblanking signal This pin produces blanking pulses narrower than the pulses for both horizontal and vertical synchronization. Line switch signal The chip generates this signal for each horizontal scan line. During NTSC operation, this pin remains at "L" level. This pin provides the FM demodulator trigger signal for the SECAM system. During NTSC operation, this pin remains at "L" level. This pin provides the signal for erasing the subcarrier signal for the SECAM system (1010f H ) (1030f H ) 1/ (606f H ) (618f H ) 1/ (1414f H ) (1442f H ) 1/ (1616f H ) (1648f H ) 1/8 4

5 For Video Equipment H Decoder Pulse Timing Chart for NTSC H-SYNC EO V-SER BF HD WHD CP H=63.55µs Unit: µs (*1) *1 420 H : H : H : H :

6 For Video Equipment Pulse Timing Chart for NTSC Composite and Vertical Synchronizing Signals (1/2) BF 21.0H µs BF Pulse Timing Chart for NTSC Composite and Vertical Synchronizing Signals (2/2) 9H 9H 16H + 8.8µs H 16H H + 7.5µs H µs 6

7 For Video Equipment H Decoder Pulse Timing Chart for PAL/SECAM H-SYNC EO V-SER BF HD WHD CP2 IDP S FMTP 1H=64µs Unit: µs (*1) *1 420 H : H : H : H :

8 For Video Equipment Pulse Timing Chart for PAL/SECAM Composite and Vertical Synchronizing Signals (1/2) BF-(1) BF-(3) IDP S LSW(1) LSW(3) BF-(2) BF-(4) IDP S LSW(2) LSW(4) H 7.5H H 21H + 8.8µs 25H µs 21H 8

9 For Video Equipment Pulse Timing Chart for PAL/SECAM Composite and Vertical Synchronizing Signals (2/2) H + 7.2µs H µs 9

10 For Video Equipment Application Circuit Example 5V Reference clock input 34 TEST1 35 TEST2 36 TEST3 37 V SS1 38 CLK 39 V DD1 40 EO HD CCDS2 CCDS1 CP2 TVMD2 S FMTP OSCI TVMD1 22 LSW 21 BFIDP WHD 18 V SS2 17 SC2 16 SC1 15 V DD OSCO 12 10

11 For Video Equipment Package Dimensions (Unit: mm) QFP044-P ± = ± ± ± ± ± ± ± min. 0.35± ± to 7 Note) The package of this product will be changed to the following lead-free type (QFP044-P-1010E). 11

12 For Video Equipment New Package Dimensions (Unit: mm) QFP044-P-1010E (Lead-free package) 12.30± ± (1.00) ± (1.00) ± ± ± ± ± Seating plane ± to ±

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