LZ95B25 LZ95B25 Subcarrier Generator LSl for CCD DESCRIPTION PIN CONNECTIONS The U95B25 is a CMOS subcarrier signal generator LSI which provides subcarrier pulses for color video camera, in combination LSI (LZ95D52/M) 18-PIN MFP TOP VIEW B TVMI 1 FEATURES TVM2 . Switchable between NTSC, PAL and SECAM systems . Included phase comparator circuit ● Single + 5 V power supply ● Package : 18-pin MFP(MFPO1 8-P) 2 4FSI 3 4FS0 4 TST I 5 0 18 VCC 17 GNO 16 CPI 15 SCHD 14 RPI SC, 6 13 CFMI SC2 7 12 TST3 TST2 8 11 CPCH GND 9 10 EOO RI ~.K -----. .nlAGRAM ......... Vcc GND CPI SCHD RPI CFMI TST, CPCH EOO TVM I TVM2 4FSI 4FS0 TST! SCI SC2 TST2 GNO ‘In the abwnce of confimtion by device sw!fication sheets SHARP takes no rewnslb!l(v fci any defects tiat xcur in equ)pment us(ng any of WARPs devices, shorn In cablcgs, I data M, et, ?nnta?t SHARP ,. order in nhta(n ihe latp?t ws,on of tie device m.lhcation .*wb btie uslno anv SHARPs device” 299 LZ95B25 ABSOLUTE MAXIMUM RATINGS PARMHER SYMBOL RATING –0.3 Vcc Supply voltage to UNIT v 7.0 Input voltage VI – 0.3 to Vcc + 0.3 v Output voltage Vo – 0.3 to Vcc + 0.3 v Operating temperature Topr –20 to +70 ‘c Storage temperature Tstg –55 to +150 “c DC CHARACTERISTICS PARMHER (VCC=+5 V*1O%, T a = – 1 0 SYMBOL Input Low voltage vlL Input High voltage vlH I Input Low current CONDITIONS MIN. TYP. MAX. UNIT 1.5 v v 3.5 Vl=r) [IL1 I v I IILZ I ,, Vl=o v I IIH1 V I = Vcc I 8,0 Output High voltage Output Low voltage Leak output current NOTES : 1. Applied to inputs (IC, ICU, OSCI). 2. Applied to inputs (lCD, OSCI). 3. Applied to input (ICU). 4. Applied to inputs (ICU, OSCI). 5. Applied to input (lCD). 6. Applied to outputs (O, OSCO). 7. Applied to output (02M). 8. Applied to tri-state output (EOO). 300 IIH2 I 8.0 V I = Vcc NOTE ~ 1 1.0 ,uA 2 60 PA 2 1.0 PA 4 60 ,uA 5 Input High current I t o +7 UC) vOH 1 IoH=–P mA 4.0 v 6 vOH2 IoH=– I mA 4.0 v 7 vOH3 IoH=–6 mA 4,0 v 8 vOL1 ioL = 4 mA 0.4 v 6 vOL2 IOL = 2 mA 0,4 v 7 v0L3 IoL=12 0,4 v 1 Ioz I High-Z 1.0 ,uA mA 8 LZ95B25 4N .““. SYMBOL _.. ..— —— 1/0 I POLARITY I 1 TVM I Icu — TV mode 1 2 TVM2 Icu — TV mode 2 FUNCTION PIN NAME These input pins to select TV standards. ~ An input pin for the signal 4 times the color subcarrier frequency. 3 4FSI Oscl nn Colck input At NTSC mode : 14.31818 MHz At PAL mode : 17.734475 MHz At SECAM mode : 17.625 MHz 4 4FS0 Osco Ulr 5 TSTI ICD — 6 SC1 02M Clock output Test pin 1 The output is the inverse 4FSI (pin 4). A test pin, Set open or to L level in the Normal mode, An output pin fw color subcarrier. The frequency of Iu Subcarrier output 1 the signals is 1/4 the 4FSI (pin 3). The signal is reset by color frame pulse CFMI (pin 13). An output pin for color subcarrier. When the phase of SCI (pin 4) is 180 degree, the phase of SCZ is 7 SC2 02M Iu Subcarrier output 2 80 degree in NTSC mode in PAL mode, the phase of SC2 is 80 degree when LSW (SSG-LSI) is L level and 270 degree when LSW is H level. The SC z is same as the phase of SC I in SECAM mode. 8 TST2 ICD — 9 GND — — Test pin 2 Ground A test pin. Set open or to L level in the Normal mode. A grounding pin. Phase comparator output for input signals RPI (pin 14) and CPI (pin 16). When CPI is advanced, output 10 EOO TO — Phase comparator output is Low level. When CPI is delayed, output is High level. When phases are equal, the terminal impadance is High. Pha= comparator comparates rising edge of CPI. The CPCH input pin switches the polarity of RPI 11 CPCH ICD — Polarity select input (pin 14). When CPCH is L level, pha~ comparator comparates rising edge of RPI. When CPCH is H level, phase comparator comparates falling edge of RPI. 12 TST3 ICD – Test pin 3 13 CFMI ICD – Color frame input A test pin. Set open or to L level in the Normal mode. An input pin for color frame signal; Connect to CFMO (SSG-LSI). 301 LZ95B25 :’. SYMBOL FUNCTION 1/0 POLARITY PIN NAME ICD — Horizontal comparison the phase comparator. Connect to HD (SSG-LSI), input when comparator is used. The polarity of RPI se- An input pin for the reference horizontal signal to 14 RPI lects with CPCH (pin 11), A horizontal synchronous pulse obtained by dividing 4FSI (pin 3). 15 SCHD o – At NTSC mode : dividing into 1/910 4FSI, At PAL mode : dividing into 1/1 135 4FSI ordinarily and dividing into Subcarrier HD 1/1 137 4FSI during one horizon tal period within the V blanking. At SECAM mode : dividing into 1/1 128 4FSI. 16 CPI [CD – Horizontal comparison input An input pin for comparison horizontal signal to the phase comparator. Connect to SCHD (pin 15) when comparator is used, 17 GND — — Ground A grounding pin. 18 Vcc – . Power supply Supply +5 V power. Icu : Input pin (CMOS level with built-in pull-up resistor). : Input pin (CMOS level with built-in pull-up resistor). o : Output pin, 02M : Output pin. TO : Output pln (tn-state output). OSCI : Input pin for oscillation. OSCO : Output pin for oscillation. ICD 302 LZ95B25 TIMING DIAGRAM PULSE TIMING < NTSC > 4FSI SC? 1 SC2 SC2 : 90” advanced PULSE TIMING < PAL > 4FSI LSW sc~~ SC2 ~ SC2 : 90” advanced ~ SC2 : 90” delayad PULSE TIMING < SECAM > 4FSI Sci SC2 WI, SC2 1 I : same phaw 1 303