For Video Equipment MN67621F Color Video Camera Synchronizing Signal Generator LSI 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 N.C. N.C. N.C. CCDS2 CCDS1 CSYNC CBLK CP2 TVMD2 SCBLK FMTP 33 32 31 30 29 28 27 26 25 24 23 34 35 36 37 38 39 40 41 42 43 44 (TOP VIEW) QFP044-P-1010 22 21 20 19 18 17 16 15 14 13 12 OSCI Supports NTSC, PAL, and SECAM video systems TEST1 TEST2 TEST3 VSS1 CLK VDD1 EO N.C. ED N.C. N.C. 1 2 3 4 5 6 7 8 9 10 11 Features Supports CCDs with 420, 510, 590, and 670 H pixels Pin Assignment VD N.C. N.C. N.C. N.C. PBLK N.C. N.C. WBKL Overview The MN67621F 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 fH , the vertical synchronizing signal fV , and the composite synchronizing signal. A built-in 4fSC crystal oscillator circuit divides the frequency by four to generate the color subcarrier frequency signals SC1 and SC2. TVMD1 LSW BFIDP N.C. WHD VSS2 SC2 SC1 VDD2 N.C. OSCO MN67621F For Video Equipment TEST3 TEST2 36 1/2 MIXER 35 1/910 (N) (P) 12 16 11 40 OSCO OSCI EO fH/fV øD SC2 15 1/4 SC1 4fSC 1/2 34 TEST1 Block Diagram 17 21 42 18 H dec. 26 23 C dec. fH 27 28 1/2 24 2fH 6 V dec. fV 20 1/525 1/625 25 TVMD2 22 TVMD1 29 1/101 2fH 1/103 30 202fH/206fH 9 CLK CCDS1 39 1/3 1/8 1/5 1/7 CCDS2 14 38 VDD2 VDD1 VSS2 VSS1 1/2 LSW (N) (P) 37 1 HD WHD CP2 FMTP WBLK CBLK CSYNC SCBLK PBLK BFIDP VD For Video Equipment MN67621F Pin Descriptions Pin No. 39 Symbol VDD1 Pin Name Power supply Function Description "H" level (5 V) power supply for horizontal and vertical 37 VSS1 Power supply "L" level (0 V) power supply for horizontal and vertical 14 VDD2 Power supply "H" level (5 V) power supply for color subcarrier circuits 17 VSS2 Power supply "L" level (0 V) power supply for color subcarrier circuits 11 OSCI Crystal oscillation Connect these pins to a 4fSC crystal oscillator. input The pins have built-in feedback resistors. 12 OSCO Crystal oscillation If using an external clock, supply it to the OSCI pin and input leave the OSCO pin open. 38 CLK Clock input Supply the reference clock for the horizontal and vertical synchronizing signal circuits synchronizing signal circuits synchronizing signals. 22 TVMD1 25 TVMD2 29 CCDS1 30 CCDS2 34 TEST1 35 TEST2 36 TEST3 15 SC1 NTSC PAL SECAM Television system TVMD1 "H" "L" "L" selection input TVMD2 — "H" "L" The pins include built-in pull-up resistors. 420H 510H 590H 670H CCD scan lines CCDS1 "H" "H" "L" "L" selection input CCDS2 "H" "L" "H" "L" The pins include built-in pull-up resistors. Test input fSC (B-Y) 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 (4fSC) by four. 16 SC2 fSC (R-Y) output 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 28 CSYNC 1 VD 18 WHD Composite synchronizing Composite blanking signal signal output Vertical drive output Vertical drive signal Wide HD output Wide HD signal Preblanking signal 27 CBLK Composite blanking Composite blanking signal output Signal for erasing video signal 42 HD Horizontal drive output Horizontal drive signal 26 CP2 Clamp pulse output Clamp pulses for luminance and color difference signals Horizontal deflection start pulses MN67621F For Video Equipment Pin Descriptions (continued) Pin No. 9 Symbol WBLK Pin Name Composite wide blanking Function Description Composite wide blanking signal output This pin produces blanking pulses wider than the CELK pulses for both horizontal and vertical synchronization. 20 BFIDP Output for burst flag/ For NTSC and PAL systems, this is the burst flag (BF) identification signal output, which gates the color subcarrier signal. For the SECAM system, this is the identification (IDP) signal, which switches the subcarrier waveform. 6 PBLK Composite preblanking Composite preblanking signal output This pin produces blanking pulses narrower than the CBLK pulses for both horizontal and vertical synchronization. 21 LSW Line switch signal Line switch signal output The chip generates this signal for each horizontal scan line. During NTSC operation, this pin remains at "L" level. 23 FMTP Trigger signal output This pin provides the FM demodulator trigger signal for the SECAM system. During NTSC operation, this pin remains at "L" level. 24 SCBLK Subcarrier blanking This pin provides the signal for erasing the subcarrier signal signal output for the SECAM system. During NTSC operation, this pin remains at "L" level. 40 EO Phase comparator Phase comparator output 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 pixels CCDS1 CCDS2 420H H H 510H H L 590H L H 670H L L CLK frequency (MHz) NTSC PAL/SECAM 15.891606 16.09375 (1010fH) (1030fH) 9.534964 9.65625 (606fH) (618fH) 22.248249 22.53125 (1414fH) (1442fH) 25.426570 25.75000 (1616fH) (1648fH) Frequency divider ratio for first stage 1/5 1/3 1/7 1/8 For Video Equipment MN67621F H Decoder Pulse Timing Chart for NTSC 1H=63.55µs 0 Unit: µs 4.72 H-SYNC (*1) CSYNC EO –4.72 V-SER 5.35 7.87 BF 9.44 –1.57 CBLK HD 8.50 WHD 2.20 CP2 7.24 PBLK –9.12 17.52 WBLK *1 420 H 510 H 590 H 670 H : : : : 2.33 2.31 2.34 2.36 MN67621F For Video Equipment Pulse Timing Chart for NTSC Composite and Vertical Synchronizing Signals (1/2) 524 525 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 CSYNC BF 21.0H + 11.0µs CBLK 9H VD 16H + 8.8µs PBLK 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 CSYNC BF 21.0H CBLK 9H VD 16H PBLK Pulse Timing Chart for NTSC Composite and Vertical Synchronizing Signals (2/2) 488 489 490 525 1 2 3 4 5 6 7 8 9 10 99 100 101 102 CSYNC 135.5H + 7.5µs WBLK 226 227 262 263 264 265 266 267 268 269 270 271 272 CSYNC WBLK 135.5H + 19.2µs 361 362 363 364 For Video Equipment MN67621F H Decoder Pulse Timing Chart for PAL/SECAM 1H=64µs 0 Unit: µs 4.66 H-SYNC (*1) CSYNC EO –4.66 V-SER 5.59 7.77 BF –1.55 10.56 CBLK HD 8.38 WHD 2.17 CP2 PBLK –6.70 17.40 WBLK 13.0 IDP 5.29 SCBLK – 0.31 FMTP *1 420 H 510 H 590 H 670 H : : : : 2.30 2.28 2.31 2.33 MN67621F For Video Equipment Pulse Timing Chart for PAL/SECAM Composite and Vertical Synchronizing Signals (1/2) 620 621 622 623 624 625 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 CSYNC BF-(1) BF-(3) CBLK VD 25H 7.5H PBLK 21H + 8.8µs IDP SCBLK LSW(1) LSW(3) 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 CSYNC BF-(2) BF-(4) CBLK VD PBLK IDP SCBLK LSW(2) LSW(4) 25H + 12.1µs 7.5H 21H For Video Equipment MN67621F Pulse Timing Chart for PAL/SECAM Composite and Vertical Synchronizing Signals (2/2) 584 585 586 622 623 624 625 1 2 3 4 5 6 97 98 99 100 CSYNC 137.5H + 7.2µs WBLK 272 273 274 310 311 312 313 314 315 316 317 318 CSYNC WBLK 137.5H + 19.0µs 409 410 411 412 413 MN67621F For Video Equipment N.C N.C N.C CCDS2 CCDS1 CSYNC CBLK CP2 TVMD2 SCBLK FMTP TEST1 TEST2 TEST3 VSS1 CLK VDD1 EO N.C HD N.C N.C MN67621F TVMD1 LSW BFIDP N.C WHD VSS2 SC2 SC1 VDD2 N.C OSCO VD N.C N.C N.C N.C PBLK N.C N.C WBLK N.C OSCI 34 35 36 37 38 39 40 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 Reference clock input 5V 33 32 31 30 29 28 27 26 25 24 23 Application Circuit Example 22 21 20 19 18 17 16 15 14 13 12 For Video Equipment MN67621F Package Dimensions (Unit: mm) QFP044-P-1010 12.30±0.40 10.00±0.20 33 23 22 12.30±0.40 10.00±0.20 (1.00) 34 12 44 0.10 SEATING PLANE 0.10±0.10 0 to 10° 1.15±0.20 +0.10 2.00±0.20 (1.00) 11 0.35±0.10 0.15 -0.05 0.80 2.10±0.30 1 0.60±0.20