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M61250BFP Datasheet(PDF) 38 Page - Renesas Technology Corp |
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M61250BFP Datasheet(HTML) 38 Page - Renesas Technology Corp |
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38 / 50 page  M61250BFP Rev.1.0, Sep.23.2003, page 38 of 49 Chroma block • CnorR: Chroma typical output (R-Y) • CnorB: Chroma typical output (B-Y) 1. Input SG.C to pin 38. 2. When "test mode" I 2C data is 18H D6=1, 18H D7=1 and 19H D6=1 and when "test mode" I2C data is 18H D6=0, 18H D7=1 and 19H D6=1, take the pin 59 output amplitude to be the chroma typical output (R-Y) and chroma typical output (B-Y), respectively. • ACC1: ACC characteristic 1 1. Input SG.E (eb=570 mV: level + 6 dB) to pin 38. 2. Measure the pin 59 output amplitude. 3. ACC1 is defined as follows. ACC1 = 20 log measured value (mVp-p) chroma typical output 1 (mVp-p) (dB) • ACC2: ACC characteristic 2 1. Input SG.E (input level: -18 dB) to pin 38. 2. Measure the pin 59 output amplitude. 3. ACC2 is defined as follows. ACC2 = 20 log measured value (mVp-p) chroma typical output 1 (mVp-p) (dB) • OV: Chroma overload characteristic 1. Input SG.E (eb=800 mVp-p) to pin 38. 2. Measure the pin 59 output amplitude. 3. OV is defined as follows. OV = 20 log measured value (mVp-p) chroma typical output 1 (mVp-p) (dB) • VikN: Killer operation input level 1. Input SG.E (variable level) at input level 0 dB to pin 38. 2. While monitoring the pin 59 output amplitude, lower the input level, and measure the input level when the output amplitude vanishes. • KillP: Hue remaining with killer 1. Input SG.E (level: -40 dB) to pin 38. 2. Measure the pin 59 output amplitude. • APCU: APC pull-in range (upper) • APCL: APC pull-in range (lower) 1. Input SG.E (feb-fec-3.579545 MHz) to pin 38. 2. After raising the frequency until the output from pin 59 vanishes, lower the frequency, and take the point at which an output appears to be fu. 3. After lowering the frequency until the output from pin 59 vanishes, raise the frequency, and take the point at which an output appears to be fl. 4. APCU and APCL are defined as follows. APCU = fu – 3579545 Hz APCL = fl – 3579545 Hz |
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