TC90A49P/F TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC TC90A49P,TC90A49F 3LINE DIGITAL Y / C SEPARATOR IC (MULTICOLOR TYPE) The TC90A49P / F is a 3-line digital Y / C (luminance / chrominance) separation IC for PAL, NTSC, M-PAL and N-PAL format. FEATURES · TV format : NTSC (3.58), PAL, M-PAL, and N-PAL · Dynamic comb filter · Vertical edge enhancement circuit · PLL 8 × multiplier circuit · Internal 8-bit 4 fsc AD converter · Internal 8-bit precision 8 fsc DA converter (2 ch) · Sync tip clamp circuit · Internal 4H-line memory · I2C bus interface · Package : DIP 20-pin and SOP 24-pin · 5 V single power supply Weight DIP20-P-300-2.54A : SOP24-P-450-1.27B : 1.11 g 0.44 g (Typ.) (Typ.) 000707EBA1 · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. 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No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. · The information contained herein is subject to change without notice. 2001-03-06 1/17 TC90A49P/F BLOCK DIAGRAM PIN ASSIGNMENT 2001-03-06 2/17 TC90A49P/F PIN DESCRIPTION PIN No. PIN NAME 1 VDD2 2 no. before / indicates DIP package pin no. no. after / indicates SOP package pin no. FUNCTION I/O INTERFACE ADC and DAC analog power supply. − − BIAS ADC bias voltage. Stabilize by attaching a 0.01µF capacitor. − 3 VRT ADC input range D upper limit voltage. Stabilize by attaching a 0.01µF capacitor. − 4/5 AIN 5/6 VRB ADC input range D lower limit voltage. Stabilize by attaching a 0.01µF capacitor. − 6/7 VDD3 ADC and DAC logic power supply. − − 7/8 VSS2 Logic and internal DRAM GND (digital). − − 8 / 10 VDD4 Internal DRAM power supply. − − 9 / 11 SDA I C BUS SDA 10 / 12 SCL I C BUS SCL ADC input. Inputs 1.0 Vp-p video signal. Sync tip clamp is performed. 2 2 I I/O I 2001-03-06 3/17 TC90A49P/F PIN No. PIN NAME FUNCTION I/O INTERFACE 2 Shipment test mode switch or I C bus setting reset pin. 2 11 / 13 TEST When High, test mode, setting all I C bus settings to 0. Hold High for at least 100µs. 2 Send I C bus settings I when this pin is Low. 12 / 14 13 / 15 KILLER CKIN Y signal comb function ON / OFF switch. When High, comb OFF. When Low, comb ON. When [data 3 : bit 0] is 1, used as vertical edge enhancement circuit ON / OFF switch. Clock input pin. Pin 13 put a sine wave which is locked to the frequency of the burst signal in the input video signal. Amplitude is 300 mV p-p to 2 Vp-p. Input as high I I an amplitude as possible without affecting peripheral circuits. 14 / 17 FIL Connect the APC filter in the 8 fsc PLL circuit. − 15 / 18 VDD1 PLL power supply. − − 16 / 19 VSS1 ADC, DAC, and PLL GND (analog). − − 17 / 20 COUT Outputs chrominance signal. External simple LPF for clock elimination recommended. O 2001-03-06 4/17 TC90A49P/F PIN No. PIN NAME 18 / 22 DAVRT DAC output range D upper limit voltage. Stabilize by attaching a 0.01µF capacitor. − 19 / 23 DAVRB DAC output range D lower limit voltage. Stabilize by attaching a 0.01µF capacitor. − 20 / 24 YOUT Outputs luminance signal. External simple LPF for clock elimination recommended. O FUNCTION I/O INTERFACE 2001-03-06 5/17 TC90A49P/F FUNCTION DESCRIPTION (Pin no. in this section refers to DIP package pin no.) 1. AD converter (ADC) High-speed 8-bit AD converter. The input dynamic range is 1.3 Vp-p (max) input of video signals of 1.0 Vp-p (from sync tip level to 100% white level). = 256 steps. They recommends 2. Clamp circuit Performs sync tip clamp of the input video signal. The clamp level is determined internally to use the ADC dynamic range efficiently. 3. Line memory Incorporates DRAM-resident, four 1-H delay circuits. Combination of delay circuits and delay times are determined according to the signal format selected by the I2C bus. TV Format Delay Amount (clock) NTSC PAL N-PAL M-PAL 910 1135 917 909 4. Band pass filter (BPF) Extracts the chrominance signal from the line-memory-delayed composite video signal. The same filter is used by NTSC, PAL, M-PAL, and N-PAL formats. The center frequency is fsc. The characteristics differ depending on the TV format. BPFs are provided for both input and output sides of the dynamic comb filter. The input side can be set to a wide band. The output side can be set to either a wide or a narrow band using the I2C bus control. 5. Dynamic comb filter (DCF) Using Toshiba's original decision logic, detects a correlation of the three consecutive vertical lines for NTSC, every other three lines for PAL, and extracts the chrominance signal accordingly. 6. Vertical edge enhancement circuit Generates edge components in proportion to the luminance differential signal of the three consecutive vertical lines and adds the components to the luminance signal output. There are eight enhancement levels selected by the I2C bus. The coring circuit eliminates differential signals caused by noise ; thus, increase in noise due to edge enhancement is reduced. Signals lower than the pedestal level due to the addition of the edge enhancement signal may be generated ; however, such signals are eliminated by the pedestal clip circuit at a later stage. Therefore, there is no adverse effect on the sync processor circuit. The coring circuit regards small edge components as noise and does not perform enhancement. 2001-03-06 6/17 TC90A49P/F (1) Input signal with edge component a : Vertical edge level (2) Output signal b : Enhance level Vertical edge enhancement characteristic 2001-03-06 7/17 TC90A49P/F Vertical edge enhancement characteristic (Zoom) 7. PLL 8 × multiplier circuit Multiplies by eight the input subcarrier signal which is locked to the frequency of burst signal to generate 8 fsc and 4 fsc system clocks. 8. DA converter (DAC) The Y / C signal separated using the 4 fsc clock as the basic clock is over-sampled by the 8 fsc clock, then DA-converted. 2001-03-06 8/17 TC90A49P/F 9. Color killer circuit When the input video signal is a monochrome image, this circuit enables effective use of the luminance signal information regardless of whether there is a burst signal. It does this by preventing the chroma signal output from the comb filter from being subtracted from the luminance signal. While the VBI signal is active it is better not to use the comb function. Setting the KILLER pin to High at this time enables the use of character multiplex and other signals from the Y output unchanged. 10. RESET / TEST pin Switches between normal comb operation and test operation. Also used for I2C bus reset input. Change in voltage from Low to High triggers a reset. Normal use is Low. 2 11. I C bus interface Some functions and setting values can be selected using the I2C bus. The data transfer format conforms to the Philips I2C bus format. Data transfer format S Slave address (8 bit) A DATA1 S : start condition Slave address : B4 (HEX) A DATA2 A : acknowledge A DATA3 A P P : end condition 2 12. I C bus control contents : When a reset signal is input, all the following bits are zero-cleared. MSB bit7 bit6 bit5 bit4 bit3 bit2 bit1 LSB bit0 DATA1 MODE2 MODE1 MODE0 VENH2 VENH1 VENH0 PDSOFF CB DATA2 VNLR3 VNLR2 VNLR1 VNLR0 GSEL1 GSEL0 COR1 COR0 DATA3 TRAP CHTRAP Fixed to 0 CBPF Fixed to 0 Fixed to 0 Fixed to 0 ENHOFF Mode 2 to Mode 0 : Select video signal format. 000 : Analog Through Mode 001 : M-PAL 010 : N-PAL 011 : PAL 100 : NTSC When Analog Through mode is selected, input video signals are output to Yout and Cout unchanged. In Analog Through mode, the delay time for output signals differs from those used for other modes. Therefore, when changing modes to Analog Through mode, to decide the input signal format, provide some delay time until an image is displayed. There is a case where a 1 LSB error voltage at frequency fsc is multiplexed with the output signal. When deciding the input signal format, to avoid an erroneous decision due to fsc leakage, be careful when setting the decision sensitivity (killer sensitivity). When the input signal is SECAM or 4.43 NTSC, select Analog Through mode. A separate BELL filter or a BPF is required. 2001-03-06 9/17 TC90A49P/F VENH2 to VENH0 : Set vertical enhancer gain. 000 : (+0.0) to 111 : (+1.5) PDSOFF : Switches pedestal clip ON / OFF after vertical edge enhancement circuit. 0 : ON 1 : OFF CB : Sets Color Killer mode to ON / OFF 0 : Y signal comb function ON 1 : Y signal comb function OFF (Same composite signal is output from Y and C pins.) VNIR3 to VNIR0 : Set vertical enhancer non-linear point. 0000 : 4 LSB (internal set of IC to 4 LSB) to 1111 : 64 LSB (internal set of IC to 64 LSB) GSEL1 : Sets Y output horizontal peaking gain. 0 : 1.5 dB 1 : 3.0 dB GSEL0 : Switches Y output horizontal peaking ON / OFF. 0 : ON 1 : OFF COR1 and COR0 : Set vertical enhancer coring level. 00 : 0 LSB to 11 : 3 LSB TRAP : Sets C output 1 / 2 fsc trap ON / OFF. 0 : ON 1 : OFF CHTRAP : Sets C output trap gain. 0 : −24 dB 1 : −16 dB CBPF : Switches C output BPF ON / OFF (BPF characteristic after dynamic comb filter output). 0 : Narrow band = BPF → ON 1 : Wide band = BPF → OFF ENHOFF : Sets KILLER pin function. 0 : Comb ON / OFF 1 : Comb ON / OFF and vertical edge enhancement ON / OFF Signal level inside the IC The sync tip of the input video signal is clamped to an internal level equivalent to 6 LSB. When a signal amplitude of 1.0 V is equivalent to 140 IRE, 100% white status becomes an internal level of 209 LSB. At this time, the input dynamic range of 256 LSB is equivalent to 1.3 Vp-p. 2001-03-06 10/17 TC90A49P/F MAXIMUM RATINGS (Ta = 25℃ ℃) CHARACTERISTIC SYMBOL RATING UNIT VDD VSS + 6.0 V Max Vinmax VDD + 0.3 Min Vinmin VSS − 0.3 Power Supply Voltage Pin Voltage V Power Dissipation 49P (Note) PD 550 mW Power Dissipation 49F (Note) PD 458 mW Tstg −55~125 °C Storage Temperature (Note) : Ta = 70°C RECOMMENDED OPERATING CONDITIONS CHARACTERISTIC SYMBOL MIN TYP. MAX UNIT Power Supply Voltage VDD 4.75 5.0 5.25 V Digital Input Voltage VDIN 0 − VDD V Operating Temperature Topr −10 − 70 °C NOTE ELECTRICAL CHARACTERISTICS (Pin no. corresponds to DIP package pin no.) DC CHARACTERISTICS (Ta = 25°C, VDD = 5.0 V, CKIN = 3.58 MHz, 1.0 Vp-p input, Ain = no input, in all modes) CHARACTERISTIC SYMBOL MIN TYP. MAX UNIT IDD 40 75 85 mA V2 0.5 1.3 2.1 V Pin 2 : ADC bias V3 2.85 3.15 3.48 V Pin 3 : AD range D upper limit V4 1.65 1.85 2.02 V Pin 4 : Ain input pin voltage V5 1.65 1.85 2.02 V Pin 5 : AD range D lower limit V18 2.85 3.15 3.48 V Pin 18 : DA range D upper limit V19 1.65 1.85 2.02 V Pin 19 : DA range D lower limit Power Supply Current Pin Voltage NOTE Supply current, in all modes DC CHARACTERISTICS (Ta = 25°C, VDD = 5.0 V, CKIN = each fsc, Ain = no input, unless otherwise specified, in all modes) CHARACTERISTIC Output Voltage SYMBOL MIN TYP. MAX UNIT NOTE YOUT 1.65 1.85 2.02 V Pin 20 : YOUT COUT 1.65 1.85 2.02 V Pin 17 : COUT 2001-03-06 11/17 TC90A49P/F DC CHARACTERISTICS (Ta = 25°C, VDD = 5.0 V, CKIN = each fsc, Ain = no input, unless otherwise specified, in all modes) CHARACTERISTIC Output Voltage SYMBOL MIN TYP. MAX YOUT 1.65 1.85 2.02 COUT 2.25 2.5 2.67 FIL Pin (pin 14) Voltage − V14 FIL Pin (pin 14) Voltage − V14 FIL Pin (pin 14) Voltage 2.4 − V14 FIL Pin (pin 14) Voltage 2.2 2.2 − V14 2.2 UNIT NOTE V Pin 20 : YOUT V Pin 17 : COUT − V NTSC mode 3.579545 MHz − V PAL mode 4.433619 MHz − V M-PAL mode 3.575611 MHz − V N-PAL mode 3.582056 MHz PLL CHARACTERISTICS (Ta = 25°C, VDD = 5.0 V, CKIN = 1.0 Vp-p input, Ain = no input, unless otherwise specified, in all modes) CHARACTERISTIC SYMBOL MIN TYP. Pull-in Frequency Range (NTSC) ∆fckN − − Pull-in Frequency Range (PAL) ∆fckP − − Pull-in Frequency Range (NPAL) ∆fckN − − Pull-in Frequency Range (MPAL) ∆fckM − − 0.3 1.0 Input Amplitude (fsc sine wave) Vck MAX ±100 ±100 ±100 ±100 2.0 UNIT NOTE kHz In relation to fsc center frequency kHz In relation to fsc center frequency kHz In relation to fsc center frequency kHz In relation to fsc center frequency Vp-p DIGITAL CHARACTERISTICS (Ta = 25℃ ℃, VDD = 5.0 V) CHARACTERISTIC Input Voltage Current at ACK Output SYMBOL MIN TYP. MAX UNIT NOTE VIH 4 − − V Pin 9, Pin 10, Pin 12 VIL − − 1 V Pin 9, Pin 10, Pin 12 Ack 4 − − mA Pin 9 VOLmax : 0.4 V 2001-03-06 12/17 TC90A49P/F AC CHARACTERISTICS (Ta = 25°C, VDD = 5.0 V, CKIN = 1.0 Vp-p input) (1)Y Input (Ain = input, unless otherwise specified, in all modes except Analog Through Mode) CHARACTERISTIC SYMBOL MIN TYP. MAX UNIT AD Input Top Level VADt 2.85 3.15 3.48 V AD Input Bottom Level VADb 1.65 1.85 2.02 V AD Input Difference Between Top and Bottom VAD −20 − +20 mV YDA Output Top Level VDAt 2.85 3.15 3.48 V YDA Output Bottom Level VDAb 1.65 1.85 2.02 V YDA Output Difference Between Top and Bottom VDA −20 − +20 mV YOUT Low Frequency Gain GY −0.5 0.0 0.5 dB YOUT Frequency Characteristic (Peaking OFF) FW − 4.7 − MHz −3 dB frequency YOUT Frequency Characteristic (Peaking 1.5 dB) FW1 − 6.2 − MHz −3 dB frequency YOUT Frequency Characteristic (Peaking 3.0 dB) FW2 − 6.7 − MHz −3 dB frequency YOUT Comb Characteristic Ycom 40 45 − dB YOUT Differential Accidental L −1 0 +1 LSB (Reference value) YOUT Integral Accidental B −3 0 +3 LSB (Reference value) Output Impedance Zy 300 600 900 Ω Input D Range Output D Range NOTE Input / output gain measured in ADDA Through mode Difference between comb top and bottom (2)C Output (Ain = input, unless otherwise specified, in all modes except Analog Through Mode) CHARACTERISTIC SYMBOL MIN TYP. MAX UNIT VCOUT − 1.0 1.0 V D Range of C COUT Gain Input GC −0.5 0.0 + 0.5 dB Output gain at comb operation COUT Gain Comb Characteristic Ccom 35 40 − dB Difference between comb top and bottom Differential Gain DG 0 2 5 % Differential Phase DP 0 2 5 ° Output Impedance Zc 300 600 900 Ω Output Dynamic Range NOTE (3)CHARACTERISTICS BY BUS SETTING (Ain = input, unless otherwise specified, in all modes except Analog Through Mode) CHARACTERISTIC SYMBOL MIN TYP. MAX UNIT NOTE C-BPF Characteristic (Wide Band) BW 1 − −2.5 − dB Attenuation at fsc −0.5 MHz C-BPF Characteristic (Narrow Band) BW 0 − −3.0 − dB Attenuation at fsc −0.5 MHz 2001-03-06 13/17 TC90A49P/F TEST CIRCUIT (TC90A49P) 2001-03-06 14/17 TC90A49P/F APPLICATION CIRCUIT (TC90A49P) 2001-03-06 15/17 TC90A49P/F PACKAGE DIMENSIONS DIP20-P-300-2.54A Unit : mm Weight : 1.11g (Typ.) 2001-03-06 16/17 TC90A49P/F PACKAGE DIMENSIONS SOP24-P-450-1.27B Unit : mm Weight : 0.44g (Typ.) 2001-03-06 17/17