Freescale Semiconductor, Inc. Technical Data MC44BC373/374 Rev. 3.5, 7/2003 MC44BC373/374 MC44BC373/374 Multi-Standard or PAL/ NTSC Modulator with integrated antenna booster/splitter ICs Freescale Semiconductor, Inc... TSSOP 24 Package Ordering Information Device Temp Range Package MC44BC373DTB,R2 MC44BC374DTB,R2 –10oC to +80oC TSSOP24 NOTE: For tape and reel, add R2 suffix. Contents These modulator ICs are for use in VCRs, games, set-top boxes, and similar devices. 1 2 3 4 5 Figure 1 shows the pin connections. Features . . . . . . . . . . . . . 2 Device Overview . . . . . . 3 Maximum Ratings . . . . . 5 Electrostatic Discharge 5 Electrical Characteristics 5 6 I2C Bit Mapping . . . . . . . 6 7 I2C Programming . . . . . 7 8 Modulator High Frequency Characteristics 9 9 Video Characteristics . 10 10 Audio Characteristics . 11 11 Antenna Booster/Splitter Characteristics 12 12 Modulator Operation . 14 13 High-Speed I2C Compatible Bus 18 14 Application and Case Diagrams 21 GNDD SCL 1 24 SDA 2 23 VCCD LOP XTAL 3 22 PLLFLT 4 21 TVOVCC GND 5 20 TVOUT ANT1 6 19 GND ANT2 7 18 GND VCRTU GND 8 17 PREEM 9 16 VCRVCC AUDIO 10 15 VCCA SPLFLT 11 14 VIDEO AUXIN 12 13 VCCI Figure 1. MC44BC373/374 Pin Connections This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. © Motorola, Inc., 2003. All rights reserved. For More Information On This Product, Go to: www.freescale.com Features Freescale Semiconductor, Inc. 1 Features MC44BC373: Multi-Standard PAL/SECAM/NTSC with integrated booster splitter MC44BC374: PAL/NTSC with integrated booster splitter The channel is set by an on-chip high-speed I2C compatible bus receiver. A Phase-Locked Loop (PLL) tunes the modulator over the full UHF range. The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4.5, 5.5, 6.0, and 6.5MHz subcarrier frequencies. These frequencies are selected using the bus. The picture-to-sound ratio is adjusted using the bus. In addition, an on-chip video test pattern generator can be switched ON using a 1kHz audio test signal. Freescale Semiconductor, Inc... Along with the modulator functions, an Antenna Booster/Splitter function is included. These modulator versions are completely pin-to-pin and software compatible and all versions have the following features. 2 • No external varicaps diodes/inductors or tuned components • Channel 21–69 UHF operation • VHF range possible by internal dividers (30MHz to 450MHz) • Integrated on-chip programmable UHF oscillator • Extremely low external component count • High-speed read and write I2C-bus compatible (800kHz) • Fixed video modulation depth (80% in PAL and 90% in SECAM) • Peak White Clip disabled using the bus • Programmable picture/sound carrier ratio (12dB and 16dB) • Integrated on-chip programmable sound subcarrier oscillator (4.5MHz to 6.5MHz)—No external varicaps • On-chip video test pattern generator with sound test signal (1kHz) • Low-power programmable modulator standby mode (booster active) • Transient output inhibit during PLL Lock-up at Power-ON • Logical Output Port controlled by bus • Integrated Antenna Booster/Splitter (40MHz to 860MHz) • Custom masked versions with unique start-up settings possible (no I2C bus programming required) • Extremely robust ESD protection, minimum 4kV, typical 6kV MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Device Overview 2 Device Overview Figure 2 shows a simplified block diagram of the MC44BC373/4 device. The MC44BC373/374 device contains four main sections: 1. A high-speed I2C-compatible bus section. 2. A PLL section — Synthesizes the UHF/VHF output channel frequency (from an integrated UHF oscillator, divided for VHF output). 3. A modulator section — Accepts audio and video inputs and then uses those inputs to modulate the UHF/VHF carrier. 4. An Antenna Booster/Splitter — Amplifies and splits the antenna signal into two signals: a) The modulated signal is added to the amplified antenna signal on the TVOUT pin. Freescale Semiconductor, Inc... a) The following items are programmable using the high-speed I2C compatible bus: • Channel frequency • Sound frequency • Sound/picture carrier ratio An on-chip video test pattern generator with an audio test signal is included. The MC44BC373 operates as a multi-standard modulator and can handle the following systems using the same external circuit components: • B/G • I • D/K • H • L • M/N The high frequency BiCMOS technology permits integration of the following functions: • Antenna Booster/Splitter • UHF tank circuit and certain filtering MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 3 4 8 6 7 1 GND ANT2 ANT1 SCL 4dB MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 24 GNDD 23 VCCD I2C BUS Prescaler/8 I2C BUS AM FM Clamp VIDEO 14 PLLFLT 22 Ref Divider /128 XTAL 4 4MHz XCO VCO and PLL SECTION AM Modulator 31.25kHz Phase Comp PLL L/BG LPF Prog Divider Audio Amplifier MODULATOR SECTION ALC Sound Oscillator and FM Modulator SPLLFLT 11 Sound PFD 31.25 kHz Prog Divider UHF OSC VHF Dividers Sound Modulator LPF LPF Peak White L/BG I2C BUS High-Speed I2C Bus Receiver BUS SECTION 75Ω 75Ω Video Modulator I C BUS 2 L/BG SDA 2 5 GND VCRTU 17 16 VCCI 13 TVOUT 20 TVOVCC 21 GND 18 GND 19 BST SECTION LOP 3 Freescale Semiconductor, Inc... PREEM 12 AUX IN 15 VCCA 9 10 AUDIO Device Overview Freescale Semiconductor, Inc. I2C BUS Figure 2. Simplified Block Diagram—MC44BC373/374 MOTOROLA Freescale Semiconductor, Inc. Maximum Ratings 3 Maximum Ratings Sym Parameter Value Unit Vcc1 Supply Voltage Tamin Minimum Operating Ambient Temperature Tamax 6 Maximum Operating Ambient Temperature Tstgmin Minimum Storage Temperature Tstgmax Maximum Storage Temperature V –10 o C oC 75 –65 o 150 o C This device contains protection circuitry to guard against damage due to high static voltage or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation, input and output voltages should be constrained to the ranges indicated in the Recommended Operating Conditions. C Freescale Semiconductor, Inc... Maximum ratings are those values beyond which damage to the device may occur. For functional operation, voltage should be restricted to the Recommended Operating Condition. 4 Electrostatic Discharge Sym ESD Parameter HBM (Human Body Model)—MIL-STD-883C, Method 3015-7 Min Typ Unit 4000 6000 V 5 Electrical Characteristics • A = 100% Tested • B = 100% Correlation tested • C = Characterized on samples • D = Design parameter 5.1 Specification Conditions Unless otherwise stated: Vcc = 5.0 V, Ambient Temperature = 25o C, Video Input 1Vp-p, 10-step grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION. Parameter Min Typ Max Unit Notes Type Operating supply voltage range 4.5 5.0 5.5 V Total supply current 65 75 88 All sections active A OSC, SO, ATT=1 Bus Section active A B Total standby mode supply current 26 34 40 mA Test pattern sync pulse width 3 4.7 6.5 µS B Sound comparator charge pump current During locking When locked 7 0.7 10 1 12 1.5 µA µA A A RF comparator charge pump current 60 100 150 µA A Crystal oscillator stability-negative resistance 1 — — KΩ D Logic Output Port Saturation voltage at I=2mA Leakage current — — 160 — 300 1 mV µA A A MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 5 Freescale Semiconductor, Inc. I2C Bit Mapping 6 I2C Bit Mapping WRITE MODE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK CA-CHIP ADDRESS 1 1 0 0 1 0 1 0 ACK C1-High Order Bits 1 AUX SO LOP PS X3 X2 SYSL ACK C0-Low Order Bits PWC OSC ATT SFD1 SFD0 TB1 X5 X4 ACK FM-High Order Bits 0 TPEN N11 N10 N9 N8 N7 N6 ACK FL-Low Order Bits N5 N4 N3 N2 N1 N0 X1 X0 ACK Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK CHIP ADDRESS 1 1 0 0 1 0 1 1 ACK R-Status Byte — — — — — Y2 Y1 OOR — READ MODE Freescale Semiconductor, Inc... Bit Name PWC Peak White Clip enable/disable. OSC UHF oscillator ON/OFF. ATT Modulator output attenuated-sound and video modulators ON/OFF. SFD0, 1 TB1 AUX Sound subcarrier frequency control bits. Test mode bit—bus format compatible with MC44353. Auxiliary sound input enable/disable. SO Sound Oscillator ON/OFF. LOP Logic Output Port. PS Picture-to-Sound carrier ratio. SYSL System L enable—selects AM sound and positive video modulation (MC44BC373/ only). TPEN Test pattern enable—picture and sound. X5…X0 N0…N11 OOR Y1, Y2 6 Description Test mode bits—All bits are 0 for normal operation (see Test Mode tables, page 7 & page 8). UHF frequency programming bits, in steps of 250kHz. RF oscillator out-of-frequency range information. RF oscillator operating range information. MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. I2C Programming 7 I2C Programming Freescale Semiconductor, Inc... Sound UHF SFD1 SFD0 Sound Subcarrier Freq (MHz) OSC UHF Oscillator 0 0 4.5 0 Normal operation. 0 1 5.5 1 1 0 6.0 UHF oscillator disabled (oscillator and PLL sections bias turned OFF). 1 1 6.5 ATT Modulator Output Attenuation PS Picture-to-Sound Ratio (dB) 0 Normal operation. 0 12 1 1 16 Modulator output attenuation (sound and video modulators sections bias turned OFF). SO Sound Oscillator 0 Sound oscillator ON (normal mode). 1 Sound oscillation disabled (oscillator and PLL section bias turned OFF). AUX Auxiliary Audio Input 0 AUX input disabled (normal mode). 1 AUX input enabled. Standby Mode OSC 1 SO 1 ATT Combination of 3-bits 1 Modulator standby mode (sound and UHF oscillator, sound and video modulator section bias turned OFF, and I2C bus section standby mode)—BST is active. MC44353/4/5 Compatibility Video TB1 System L and B/G Selection MC44BC373 only SYSL 0 System B/G enabled, System L disabled (FM sound and negative video modulation). 1 System L enabled, System B/G disabled (AM sound and positive video modulation). Description 0 Normal mode (fully programmable). 1 Limited programmability and compatibility with MC44353. Logic Output Port LOP PWC Peak White Clip 0 Peak White Clip ON (System B/G). 1 Peak White Clip OFF (System L). TPEN 0 Description 0 Pin 3 is low voltage. 1 Pin 3 is high impedance. Test Pattern Signal Test pattern signal OFF (normal operation). WRITE MODE: Test Mode 1 and VHF Range X2 X1 X0 State 0 0 0 1.a Normal operation. 0 0 1 1.b RF frequency divided for low frequency testing or VHF range: RF/2 0 1 0 1.c RF/4 0 1 1 1.d RF/8 1 0 0 1.e RF/16 1 0 1 1.f DC drive applied to modulators: non-inverted video at TVOUT. 1 1 0 1.g DC drive applied to modulators: inverted video at TVOUT. 1 1 1 1.h Transient output inhibit disabled. MOTOROLA Description MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 7 Freescale Semiconductor, Inc. I2C Programming Freescale Semiconductor, Inc... WRITE MODE: Test Mode 2 X5 X4 X3 State Description 0 0 0 2.a Normal operation. 0 0 1 2.b Test pattern generator DC verification (Test pattern DC test mode available). 0 1 0 2.c Programmable divider test (UHF programmable divider on PLLFILT pin and sound programmable divider on SPLLFIL pin). 0 1 1 2.d Reference divider test (UHF reference divider on PLLFILT pin). 1 0 0 2.e UHF phase comparator, upper source on PLLFILT pin. Sound phase comparator 10µA upper source on SPLLFIL (only valid during Transient Output Inhibit). 1 0 1 2.f UHF phase comparator, lower source on PLLFILT pin. Sound phase comparator 10µA lower source on SPLLFIL (only valid during Transient Output Inhibit). 1 1 0 2.g Sound phase comparator 1µA upper source on SPLLFIL (not valid during Transient Output Inhibit). 1 1 1 2.h Sound phase comparator 1µA lower source on SPLLFIL (not valid during Transient Output Inhibit). READ MODE OOR Description 0 Normal operation, VCO in range. 1 VCO out-of-range. Y1 Description 0 VCO out-of-range, frequency too low, only valid if OOR=1. 1 VCO out-of-range, frequency too high, only valid if OOR=1. Y2 8 Description 0 High VCO is active. 1 Low VCO is active. MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Modulator High Frequency Characteristics 8 Modulator High Frequency Characteristics Unless otherwise stated: Vcc=5.0 V, Ambient Temperature =25o C, Video Input 1Vp-p, 10-step grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS VALID ONLY FOR ENVELOPE DEMODULATION. Parameter Test Conditions Min Typ Max Unit Type TVOUT output level Output signal from modulator section. See Figure 3. 73 74.5 77 dBµV B UHF oscillator frequency — 460 — 880 MHz A VHF range From UHF oscillator internally divided. 45 — 460 MHz B TVOUT output attenuation During transient output inhibit, or when ATT bit is set to 1. See Figure 3. 50 60 — dBc B — –63 –58 dBc C Second harmonic of chroma subcarrier Using red EBU bar. –65 — — dBc C Chroma/Sound intermodulation: Fp + (Fsnd – Fchr) Using red EBU bar. –65 — — dBc C Fo (picture carrier) harmonics 2nd harmonic: CH21 3rd harmonic: CH21 Other channels: See Figure 3. See NOTE 1. 30 20 35 26 — — dBc C Out band (picture carrier) spurious 1/2∗Fo–1/4∗Fo–3/2∗Fo–3/4∗Fo From 40MHz to 1GHz. — 0 10 dBµV C In band spurious (Fo 5MHz) No video sound modulation. — — 60 dBc C NOTE 1: Picture carrier harmonics are highly dependant on printed circuit board layout and decoupling capacitors. 3Fo Har m onics 40 45 35 40 Typical 25 30 25 20 15 471 20 Minimum specification 521 571 621 671 721 771 Fre que ncy (M hz) 15 471 821 871 521 571 621 671 721 771 821 871 T V O u t p u t A t t e n u at io n 75 Maximum specification 77 70 76 65 dBc Typical 75 74 Typical 60 55 73 72 471 Minimum specification Fre que ncy (M hz) TV Output Le ve l 78 Typical 35 30 dBc dBc 2Fo Har m onics dBuV Freescale Semiconductor, Inc... Sound subcarrier harmonics (Fp+n∗Fs) Reference picture carrier. 50 Minimum specification 521 571 621 671 721 771 821 Fre que ncy (M hz) Minimum specification 871 45 47 1 52 1 5 71 62 1 67 1 7 21 7 71 8 2 1 8 71 Fr e q u e n c y ( M h z ) Figure 3. Typical Performance—Modulator High Frequency MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 9 Video Characteristics Freescale Semiconductor, Inc. 9 Video Characteristics Unless otherwise stated: Vcc = 5.0 V, Ambient Temperature = 25 o C, Video Input 1Vp-p, 10-step grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS VALID ONLY FOR ENVELOPE DEMODULATION. Test Conditions Min Typ Max Unit Type Video bandwidth Reference 0dB at 100kHz, measured at 5MHz. –1.5 –0.8 — dB C Video input level 75Ohm load. — — 1.5 Vcvbs D Video input current — — 0.2 1 µA A Video input impedance — 500 — — KΩ A Peak White Clip PWC bit set to 1, see PWC section. 110 114 118 % A Video S/N See Figure 4. 50 53 — dB C Differential Phase See Figure 4. –5 — 5 deg C Differential Gain On line CCIR 310, worst of first 4 out of 5 steps. See Figure 4. –5 — 5 % C Luma/Sync ratio Input ratio 7.0 : 3.0 6.8/3.2 — 7.2/2.8 — B PAL video modulation depth — 75 81 88 % B SECAM video modulation depth — 88 93 99 % B V ide o Signal to Nois e 58 56 Typical dB 54 52 50 Minimum specification 48 471 521 571 621 671 721 771 Fre que ncy (M hz) 90 100 88 98 86 84 94 Typical 80 Maximum specification 96 Maximum specification % 82 821 871 SEC A M V id e o M o d u latio n De p th PA L V id e o M o d u latio n De p th % Freescale Semiconductor, Inc... Parameter Typical 92 78 76 90 74 Minimum specification 471 521 571 621 671 721 771 821 871 Fr e q u e n cy (M h z ) 86 471 521 571 621 671 721 771 821 871 Fr e q u e n cy (M h z ) 88 Minimum specification Figure 4. Typical Performance—Video 10 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Audio Characteristics 10 Audio Characteristics Unless otherwise stated: Vcc = 5.0 V, Ambient Temperature = 25 o C, Video Input 1Vp-p, 10-step grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS VALID ONLY FOR ENVELOPE DEMODULATION. Parameter Picture-to-Sound ratio Test Conditions Min Typ Max Unit Type 13 9 16 12 19 15 dB B PS bit set to 0. PS bit set to 1. Using specific pre-emphasis circuit, audio input level=205mVrms–audio frequency=1kHz AM modulation: SECAM Fs=6.5MHz 65 80 95 % B FM modulation: Fs=5.5, 6 or 6.5MHz 100% modulation=±50kHz FM deviation 65 80 95 % B FM modulation: NTSC Fs=4.5MHz 100% modulation=±25kHz FM deviation 65 80 95 % B Audio input resistance — 45 53 61 KΩ A Audio Frequency response Reference 0dB at 1kHz, using specified pre-emphasis circuit, measure from 50Hz to 15kHz. –2.5 — +2 dB C Audio Distortion FM (THD only) At 1kHz, 100% modulation (±50kHz). No video. — 0.4 2 % C Audio Distortion AM (THD only) At 1kHz, 100% modulation. No video. — 1.5 2.5 % D Audio S/N with Sync Buzz FM Video input EBU color bar 75%. Weighting filter CCIR 468-2. 48 53 — dB C Audio S/N with Sync Buzz AM Reference 1kHz, 85% modulation. Video input EBU color bar 75%. Audio BW from 40Hz to 15kHz. Weighting filter CCIR 468-2. 45 50 — dB D Audio Signal to Noise 58 56 54 dB Freescale Semiconductor, Inc... Audio modulation depth Typical 52 50 48 Minimum specification 46 471 521 571 621 671 721 771 821 871 Frequency (Mhz) Figure 5. Typical performance—Audio MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 11 Freescale Semiconductor, Inc. Antenna Booster/Splitter Characteristics 11 Antenna Booster /Splitter Characteristics Unless otherwise stated: Vcc = 5.0 V, Ambient Temperature = 25 o C, RF inputs / outputs into 75 Ohm load. All specifications use a BALUN at ANT1 & 2 inputs, assuming 0.8dB losses MAX from 40MHz to 860MHz. Test Conditions Min Typ Max Unit Type Frequency range — 40 — 860 MHz C Gain ANT1, 2 to VCRTU. ANT1, 2 to TVOUT. — 4 4 — dB dB B B Gain flatness 40 to 860MHz. +1.5 dB C Noise figure ANT1, 2 to VCRTU and TVOUT. Modulator in standby mode. 5.5 7.5 9.5 dB C Noise figure ANT1, 2 to VCRTU and TVOUT. Modulator in normal mode (ON). 6.5 8.5 10.5 dB C All pins, BST bias ON. At TVout and VCRTU pins, BST bias OFF. — 1.5 2.5 — B At TVin pins, BST bias OFF. — 2.5 3 — B Intermodulation (IMD) Input level=90dBuV. See IMD measurement section. F1+F2 IMD 2F1–F2, 2F2+F1, F1–F2 IMD — — 55 60 47 50 dBc dBc C C Isolations From TVOUT or VCR to ANT1, 2 TVOUT/VCRTU 48 30 60 45 — — dBc dBc C C VSWR –1.5 11.1 Typical Performance—Gain and Isolation Gain ANT1,2 to VCRTU and TVOUT 7 Maximum specification 6 dB 5 4 Typical 3 2 TV OUT Minimum specification V CRTU 1 0 150 300 450 600 750 900 Fre que ncy (M hz) Is o latio n Ou tp u t to Ou tp u t Is ola tion Output to Input -10 -30 -40 -20 Minimum specification -50 Minimum specification -30 dBc dBc Freescale Semiconductor, Inc... Parameter -60 -40 Typical -50 -70 Typical -80 -60 -70 -90 0 150 300 450 600 Fr e q u e n cy (M h z ) 750 900 0 150 300 450 600 Fr e q u e n cy (M h z ) 750 900 Figure 6. Typical Performance—Gain and Isolation 12 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Antenna Booster/Splitter Characteristics 11.2 Typical Performance—Noise Figure Noise Figure @ M odulator ON Noise Figure @ Modulator OFF 12 11 Maximum specification 10 10 dB dB 9 8 Typical 7 9 Typical 8 7 6 6 5 0 150 300 450 600 Fr e que ncy (M hz ) 750 900 0 150 300 450 600 Fr e que ncy (M hz ) 750 900 Figure 7. Typical Performance—Noise Figure 11.3 Intermodulation ( IMD ) Measurement BALUN F1 TVOUT Pin 20 Spectrum Analyzer 50/75 Pin 17 VCRTU F2 75/50 75/50 MC44BC373/4 F1 F2 2F2–F1 2F1–F2 F1 F2 F1+F2 IMD (dBc) 90dBuV F2–F1 Freescale Semiconductor, Inc... Maximum specification 11 Figure 8. Intermodulation (IMD) Measurement Intermodulation (IMD) frequencies are all frequency combinations coming from the two input carriers F1 and F2: F2–F1, 2∗F1–F2, 2∗F2–F1 and F1+F2, fall in the 40MHz–900MHz range. F1 and F2 input levels are set to 90dBuV at the input of the BALUN. F1 and F2 frequency generator levels (50W internal load) take into account a 50 to 75Ohm load difference (1.8dB), plus losses in the 3dB coupler and the 50 to 75Ohm transformer. Intermodulation measurement is the difference (in dBc) between the F1 or F2 level at the Output (VCRTU or TVOUT) and the frequency combinations level, for the following cases: F1=50MHz and F2=60MHz F1=100MHz and F2=110MHz F1=200MHz and F2=210MHz F1=300MHz and F2=310MHz F1=400MHz and F2=410MHz F1=500MHz and F2=510MHz F1=600MHz and F2=610MHz F1=700MHz and F2=710MHz F1=800MHz and F2=810MHz Intermodulation specification is the IMD measurement’s worst case. MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 13 Modulator Operation Freescale Semiconductor, Inc. 12 Modulator Operation 12.1 Power-ON Settings At power-ON, the MC44BC373 and MC44BC374 configuration is as follows: Freescale Semiconductor, Inc... WRITE MODE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK C1—High Order Bits 1 0 0 0 0 0 0 0 ACK C0—Low Order Bits 0 0 0 0 1 0 0 0 ACK FM—High Order Bits 0 0 N11 N10 N9 N8 N7 N6 ACK FL—Low Order Bits N5 N4 N3 N2 N1 N0 0 0 ACK Note: 1. N0 to N11 are set to have the UHF oscillator on channel 36 (591.25MHz). Note: 2. Peak White Clip is ON. Note: 3. Sound frequency is 5.5MHz. Note: 4. Sound auxiliary input is disabled. Note: 5. Logic Output Port is low voltage. Note: 6. Picture-to-sound ratio is 12dB. The settings indicated can be customized in the special masked version. 12.2 Power Supply The five device Vcc pins (13, 15, 16, 21, 23) must be applied at the same time to ensure all internal blocks are correctly biased. All other pins must not be biased before Vcc is applied to the device. The printed circuit board layout of the Vcc supplies must be designed to ensure maximum isolation of the I/P to O/P and also between the two O/Ps. 12.3 Standby Mode During standby mode, the modulator is switched to low power consumption; the sound oscillator, UHF oscillator, video and sound modulator sections bias are internally turned OFF. The I2C bus and booster sections remain active. The modulator can be programmed in standby mode using a combination of three bits: 1. OSC=1 2. SO=1 3. ATT=1 14 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Modulator Operation 12.4 Test Bit TB1 This test bit allows an initial evaluation of MC44BC373 and MC44BC374 using software developed for MC443535: • TB1= 0 — All MC44BC373/374 functions available—normal mode. • TB1= 1 — Limited software compatibility with MC44353; MC44BC373/374 functions not available. Freescale Semiconductor, Inc... WRITE MODE 1 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK CA-CHIP ADDRESS 1 1 0 0 1 0 1 0 ACK C1-High Order Bits 1 — — PS — — SYSL ACK C0-Low Order Bits — — — SFD1 SFD0 1 0 0 ACK FM-High Order Bits 0 TPEN N11 N10 N9 N8 N7 N6 ACK FL-Low Order Bits N5 N4 N3 N2 N1 N0 — — ACK Note: 1. Case TB1=1, compatible with MC44353 Note: 2. All “—” are don’t care bits. Note: 3. PS bit replaces PSD2 bit in MC44353 bus format: PS = 0 is for picture-to-sound ratio = 12dB, PS = 1 is for picture-to-sound ratio = 16dB Note: 4. SFD1 and SFD0 bits have the same definition for both bus formats (MC44353 and MC44BC373/374) and lets a sound frequency between 4.5MHz, 5MHz, 5.5MHz, and 6.5MHz be selected. Note: 5. SYSL bit has same definition for bus formats MC44353 and MC44BC373/374; either system L or B/G is selectable. Note: 6. All MC44BC373/374 functions are set to their default values. 12.5 System L or B / G Selection SYSL bit internally switches the following functions: • SYSL = 0; enables B/G system — Video modulation polarity—Negative — Video modulation depth—80% Typical (See Video Characteristics on page 10.) — Sound modulation type—FM • SYSL = 1; enables L system — Video modulation polarity—Positive — Video modulation depth—90% Typical (See Video Characteristics on page 10.) — Sound modulation type—AM 12.6 Transient Output Inhibit To minimize the risk of interference to other channels while the UHF PLL is acquiring a lock on the desired frequency, the Sound and Video modulators are turned OFF for each of the following two cases: 1. Power-ON from zero (i.e., all Vcc is switched from 0V to 5V). 2. UHF oscillator power-ON from OFF state (i.e., OSC bit is switched from 1 to 0) MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 15 Modulator Operation Freescale Semiconductor, Inc. There is a time-out of 263ms until the output is enabled. This allows the UHF PLL settle to its programmed frequency. During the 263ms time-out, the sound PLL current source is set to 10µA typical, to speed up the locking time. After the 263ms time-out, the current source is switched to 1 µA. CAUTION: Use care when selecting loop filter components, to ensure the loop transient does not exceed the specified delay. For test purposes, it is possible to disable the 263ms delay using Test Mode1–State1.h. 12.7 Logic Output Port (LOP) Freescale Semiconductor, Inc... The LOP pin controls any logic function. The primary applications are to control an external attenuator or an external switch between the antenna input and TV output. When an external switch is controlled, the Booster function is not used. The following figure shows a typical attenuator application with PIN diode. The LOP pin switches the PIN attenuator depending on the signal strength of the Antenna Input, thereby reducing the risks of Intermodulation in certain areas. The LOP may also be used as an OFF position bypass switch or for other logic functions in the application. Vcc Antenna Input TV Out LOP pin Figure 9. Attenuator Application with PIN Diode 12.8 Video Section—Peak White Clip The modulator requires the following: • A composite video input with “negative going” sync pulses • A nominal level of 1Vp-p This signal is AC-coupled to the video input where the sync tip level is clamped. The video signal is then passed to a Peak White Clip (PWC) circuit. The PWC circuit function sets to soft-clip the top of the video waveform, if the “sync tip amplitude” to “peak white clip” goes too high. This method avoids carrier overmodulation by the video. Clipping can be disabled by software. 12.9 Sound Section The multivibrator oscillator is fully integrated and does not require external components. An internal low pass filter and matched structure provide a very low harmonics level. The sound modulator system consists of an FM modulator incorporating the sound subcarrier oscillator, and an AM modulator. The audio input signal is AC coupled into the amplifier which then drives the two types of modulators. The audio pre-emphasis circuit is a high-pass filter with an external capacitor and an internal resistor (100kOhms). The recommended capacitor value (470pF) is for BG standard. (50µS time constant.) 16 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Modulator Operation The auxiliary audio input adds a sound subcarrier to the main carrier. The input can be a modulated NICAM carrier or a second sound subcarrier for a stereo system. Pin 12 is directly connected to the sound modulator input and the picture-to-sound ratio (P/S Ratio) depends on the auxiliary audio input level. (P/S ratio is 20dB for 35mVrms typical.) 12.10 Test Pattern Generator A simple test pattern is generated on the IC which can be switched in under bus control to permit a TV receiver to easily tune in to the modulator output. The pattern consists of two white vertical bars on a black background and a 976Hz audio test signal. Freescale Semiconductor, Inc... TE2 7/10 3/10 TE1 0 10 20 24 2830 40 44 50 60 64 TIME IN µS. Figure 10. Test Pattern Generator—(Time in Seconds) 12.11 PLL Section The reference divider is a fixed divide-by-128, resulting in a reference frequency of 31.25KHz with a 4.0MHz crystal. The 31.25KHz reference frequency is used for both UHF and Sound PLLs. The prescaler is a fixed divide by 8 and is permanently engaged. The programmable divider’s division ratio is controlled by the state of control bits N0 to N11. The divider ratio N for a desired frequency F (in MHz) is provided by the following formulas: F 128 N = --- × --------8 4 with: N = 2048 × N11 + 1024 × N10 + …… + 4 × N2 + 2 × N1 + N0 12.12 UHF Oscillator—VHF Range The UHF oscillator is fully integrated and does not require any external components. For low frequency testing or VHF range operation (test mode 1, states 1.b to 1.c), the UHF oscillator can be internally divided by 2, 4, 8, or 16. MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 17 Freescale Semiconductor, Inc. High-Speed I2C Compatible Bus 13 High-Speed I2C Compatible Bus 13.1 Specification Conditions Unless otherwise specified, the Vcc1=5.0V and the ambient temperature (TA) =25 o C. Freescale Semiconductor, Inc... Electrical Characteristics Min Typ Max Unit Type SDA/SCL output current at 0 V — — 10 µA A SDA/SCL low input level — — 1.5 V B SDA/SCL high input level 3.0 — — V B SDA/SCL input current for input level from 0.4V to 0.3Vcc –5 — 5 µA C SDA/SCL input level 0 — Vcc+0,3 V D SDA/SCL capacitance — — 10 pF C ACK low output level (sinking 3mA) — 0,3 1 V A ACK low output level (sinking 15mA) — — 1.5 V C Min Typ Max Unit Type 0 — 800 kHz C 200 — — ns C Timing Characteristics Bus clock frequency Bus free time between stop and start Setup time for start condition 500 — — ns C Hold time for start condition 500 — — ns C Data setup time 0 — — ns C Data hold time 0 — — ns C Setup time for stop condition 500 — — ns C Hold time for stop condition 500 — — ns C Acknowledge propagation delay — — 300 ns C SDA fall time at 3ma sink I and 130pF load — — 50 ns C SDA fall time at 3ma sink I and 400pF load — — 80 ns C SDA rise time SCL fall/rise time — — — — 300 300 ns ns C C Pulse width of spikes suppressed by the input filter — — 50 ns C Start Stop 13.2 Timing Definitions Tbuf Stop ACK Start Chip Address SSDA SSCL Tsu;sto Thd;sta ... ... Tsu;dat Thd;dat SDA SDA SCL SCL Tack:low Tsu;sta Thd;sto Figure 11. SSDA/SSCL Timing 18 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor,High-Speed Inc. I2C Compatible Bus 13.3 Levels Definition SDA ... Vcc Vih dead band Vil 0V Figure 12. SDA Levels 13.4 High-Speed I2C Compatible Bus Format SCL Freescale Semiconductor, Inc... 1 STA 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Chip Address ($CA) First Data Byte (C1 or FM) ACK 44 45 Stop Data ACK ACK SDA Figure 13. SCL and SDA Bus Timing 13.5 I2C Write Mode Format and Bus Receiver The bus receiver operates the I2C compatible data format. The chip address (I2C bus) is: 1 1 0 0 1 0 1 0 (ACK) = $CA (hex) in write mode In write mode, each ninth data bit (bits 9, 18, 27, 36, and 45) is an acknowledge bit (ACK) during which the MCU sends a logic 1 and the Modulator circuit answers on the data line by pulling it low. Besides the chip address, the circuit needs two or four data bytes for operation. The following data byte sequences are the permitted incoming information: Example 1 STA CA C1 C0 STO Example 2 STA CA FM FL STO Example 3 STA CA C1 C0 FM FL STO Example 4 STA CA FM FL C1 C0 STO With: STA = Start condition CA = Chip Address FM = Frequency information, high order bits FL = Frequency information, low order bits C1 = Control information, high order bits CO = Control information, low order bits STO = Stop condition After the chip address, two or four data bytes may be received. • If three (3) data bytes are received, the third one is ignored. • If five (5) or more data bytes are received, the fifth and following ones are ignored, and the last ACK pulse is sent at the end of the fourth data byte. MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 19 Freescale Semiconductor, Inc. High-Speed I2C Compatible Bus The first and third data bytes contain a function bit which lets the IC distinguish between frequency information and control information. If the function bit is a logic 1, the two following bytes contain control information. The first data byte after the chip address may be byte CO or byte FM. The two bytes of frequency information are preceded by a logic 0. 13.6 I2C Read Mode Format The chip address (I2C) is: 1 1 0 0 1 0 1 1 (ACK) = $CB (hex) in read mode Freescale Semiconductor, Inc... The incoming information consists of the read mode chip address byte. The device then answers with an ACK followed by one byte containing three bits of status information. No acknowledge is answered by the modulator after this byte. 20 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor,Application Inc. and Case Diagrams 14 Application and Case Diagrams Proposed BiCMOS Modulator and Booster/Splitter Application This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice. Vcc SCL O O SDA O Note 2 SCL 1 24 2 23 3 22 SDA O LOP Freescale Semiconductor, Inc... 4MHz Cx Note 1 LOP 1nF GND ANTIN O 4 XTAL 5 1nF Pre-em 470pF 17 9 16 1nF GND VCRTU O VCRTU 10nF VCRVCC 15 11 14 12 13 AUXIN O TVOUT 1nF GND 10 SPLLFLT 47nF 10nF TVOUT 8 AUDIO 22nF 20 18 GND 220nF 21 TVOVCC 19 PREEM 100nF VCCD PLLFLT 7 ANT2 22nF GNDD 6 ANT1 2.2k 10nF VCCA O Video VIDEO 100nF VCCI 75 1nF 15k O Audio O Auxin O Vcc Note 1: Cx value depends on crystal characteristics; Cx = 27pF on Motorola application board. Note 2: Loop filter components must be as close as possible to pins 22 and 23. Figure 14. Proposed BiCMOS Modulator and Booster/Splitter Application MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 21 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Application and Case Diagrams CASE 940H-02 ISSUE A Millimeters Inches Dim Min Max Min Max A 7.70 7.90 0.303 0.311 B 4.30 4.48 0.169 0.176 C — 0.95 — 0.037 D 0.05 0.15 0.002 0.006 F 0.51 0.71 0.020 0.028 G 0.65 BSC 0.026 BSC H 0.27 0.37 0.011 0.015 J 0.09 0.18 0.003 0.007 J1 0.09 0.13 0.003 0.005 K 0.19 0.30 0.007 0.012 K1 0.19 0.25 0.007 0.010 L 6.25 6.50 0.246 0.256 8o 0o 8o M 0 o Note: 1. Dimensioning and Tolerancing per ANSI Y14.5M, 1982. Note: 2. Controlling dimension: Millimeters. Note: 3. Dimensions A and B do not include mold flash or protrusions and are measured at the parting line. Mold flash or protrusions shall not exceed 0.15 (0.006) per side. Note: 4. Dimension is the length of terminal for soldering to a substrate. Note: only. 5. Terminal positions are shown for reference Note: 6. The lead width dimension does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.08 (0.003) total in excess of the lead width dimension at maximum material condition. Dambar can not be located on the lower radius or the foot. Minimum space between protrusions and adjacent lead to be 0.14 (0.006). Figure 15. TSSOP24 Package 22 MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... NOTES MOTOROLA MC44BC373/374 Technical Data For More Information On This Product, Go to: www.freescale.com 23 Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. HOW TO REACH US: Information in this document is provided solely to enable system and software implementers to use Motorola products. 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