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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STV0056AF 数据表(PDF) 9 Page - STMicroelectronics |
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STV0056AF 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 27 page  AUDIO DEEMPHASIS + ANRS VOL OUT AUX OUT AUDIO PLL DEC RTN K1a K5b K5c K5a K1b AUX IN K DEC OUT K6c K6a K 1c 6b AUDIO SWITCHING K4 :a → ANRS input non-scrambled audio b → ANRS input descrambled audio K2 K3 a b1 b2 c a a a a No ANRS, No De-emphasis No ANRS, 50 µs No ANRS, 75 µs No ANRS, J17 a b1 b2 c b b b b ANRS, No De-emphasis ANRS, 50 µs ANRS, 75 µs ANRS, J17 AGC LEVEL DETECTOR 1 LEVEL DETECTOR 2 FM IN AGC R AMPLK R V REF Reg8 b4 Bias 90 0 VCO AUDIO R DET R CPUMP R SYNTHESIZER STV0056AF Amp. Detect SW1 Phase Detect V REF FM dev. Select. SW4 SW2 AGC LEVEL DETECTOR 1 LEVEL DETECTOR 2 AGC L AMPLK L V REF Bias 90 0 VCO AUDIO L DET L CPUMP L Amp. Detect SW3 Phase Detect V REF FM dev. Select. WATCHDOG WATCHDOG Reg8 b0 19 39 46 22 38 47 49 36 35 FM DEMODULATION BLOCK DIAGRAM STV0056AF 9/27 |
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