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MC44BC374CD Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
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MC44BC374CD Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 30 page I2C Programming MC44BC373C/374C Technical Data 8I2C Programming WRITE MODE: Test Mode 1 and VHF Range X2 X1 X0 State Description 0 0 0 1.a Normal operation 0 0 1 1.b RF frequency divided for low frequency testing or VHF range: RF/2 010 1.c RF/4 011 1.d RF/8 100 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 111 1.h Transient output inhibit disabled (ie speed up mode) During this speed-up test mode, ATT=0 forces sound current source to 1 µA, and ATT=1forces itto10 µA. Sound Video SFD1 SFD0 Sound Subcarrier Freq (MHz) 00 4.5 01 5.5 10 6.0 11 6.5 PS Picture-to-Sound Ratio (dB) 012 116 SO Sound Oscillator 0 Sound oscillator ON (Normal mode) 1 Sound oscillation disabled (oscillator and PLL section bias turned OFF) SYSL System L/BG Selection (MC44BC373C only) 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) PWC Peak White Clip 0 Peak White Clip ON (System B/G) 1 Peak White Clip OFF (System L) TPEN Test Pattern Signal 0 Test pattern signal OFF (normal operation) UHF Standby Mode MC44353 /4/5 Compatibility Logic Output Port OSC UHF Oscillator 0 Normal operation 1 UHF oscillator disabled (oscillator and PLL sections bias turned OFF) ATT Modulator Output Attenuation 0 Normal operation 1 Modulator output attenuation (sound and video modulators sections bias turned OFF. OSC SO ATT Combination of 3-bits 1 1 1 Modulator standby mode TB1 Description 0 Normal mode (Full programmability) 1 Limited programmability and compatibility with MC44353 LOP Description 0 Pin 3 is low voltage 1 Pin 3 is high impedance Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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