BU1923

BU1920 : BU1920 / BU1920F / BU1920FS 172 Audio ICs FInput / output circuits BU1920 / BU1920F / BU1920FS 173 Audio ICs BU1920 / BU1920F / BU1920FS FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 5.0V and GND = 0.0V) Filter block Demodulator block 174 Audio ICs FOutput data timing BU1920 / BU1920F / BU1920FS The clock (RCLK) frequency is 1187.5Hz. Depending on the state of the internal PLL clock, the data (RDATA) is replaced in synchronous with either the rising or falling edge of the clock. To read the data, you may choose either the rising or falling edge of the clock as the reference. The data is valid for 416.7µs, after the reference clock edge. QUAL pin opera.

BU1920F : BU1920 / BU1920F / BU1920FS 172 Audio ICs FInput / output circuits BU1920 / BU1920F / BU1920FS 173 Audio ICs BU1920 / BU1920F / BU1920FS FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 5.0V and GND = 0.0V) Filter block Demodulator block 174 Audio ICs FOutput data timing BU1920 / BU1920F / BU1920FS The clock (RCLK) frequency is 1187.5Hz. Depending on the state of the internal PLL clock, the data (RDATA) is replaced in synchronous with either the rising or falling edge of the clock. To read the data, you may choose either the rising or falling edge of the clock as the reference. The data is valid for 416.7µs, after the reference clock edge. QUAL pin opera.

BU1920FS : BU1920 / BU1920F / BU1920FS 172 Audio ICs FInput / output circuits BU1920 / BU1920F / BU1920FS 173 Audio ICs BU1920 / BU1920F / BU1920FS FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 5.0V and GND = 0.0V) Filter block Demodulator block 174 Audio ICs FOutput data timing BU1920 / BU1920F / BU1920FS The clock (RCLK) frequency is 1187.5Hz. Depending on the state of the internal PLL clock, the data (RDATA) is replaced in synchronous with either the rising or falling edge of the clock. To read the data, you may choose either the rising or falling edge of the clock as the reference. The data is valid for 416.7µs, after the reference clock edge. QUAL pin opera.

BU1922 : Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 .

BU1922F : Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Powered by ICminer.com Electronic-Library Service CopyRight 2003 .

BU1923F : BU1923 / BU1923F FInput / output circuits 830 Audio ICs BU1923 / BU1923F FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD1 = VDD2 = 5.0V, VSS1 = VSS2 = 0.0V) 831 Audio ICs FOutput data timing BU1923 / BU1923F The clock (RCLK) frequency is 1187.5Hz. Depending on the state of the internal PLL clock, the data (RDATA) is replaced in synchronous with either the rising or falling edge of the clock. To read the data, you may choose ei- ther the rising or falling edge of the clock as the reference. The data is valid for 416.7µs. after the reference clock edge. QUAL pin operation: Indicates the quality of the demodulated data. (1) Good data: HI (2) Poor data: LO FElect.

BU1924 : Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol QUAL RDATA Vref MUX VDD1 VSS1 VSS3 CMP T2 T1 VSS2 VDD2 XI XO (N.C.) RCLK Crystal oscillator − Demodulator clock Digital power supply 2.7V to 5.5V Connects to 4.332MHz oscillator (refer to input/output circuits) − 1187.5Hz clock (refer to the timing diagram) Test input Open or connected to ground Type B − Comparator input C-junction (refer to input/output circuits ) Type D Analog power supply 2.7V to 5.5V − Pin name Functions Input/Output type Type C Type C Type E Type F Demodulator quality Good data : High, bad data : Low Demodulator data Reference voltage Input Refer to output data timing 1/2 VDD1 (refer to input/output circuits) Compos.

BU1924F : Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol QUAL RDATA Vref MUX VDD1 VSS1 VSS3 CMP T2 T1 VSS2 VDD2 XI XO (N.C.) RCLK Crystal oscillator − Demodulator clock Digital power supply 2.7V to 5.5V Connects to 4.332MHz oscillator (refer to input/output circuits) − 1187.5Hz clock (refer to the timing diagram) Test input Open or connected to ground Type B − Comparator input C-junction (refer to input/output circuits ) Type D Analog power supply 2.7V to 5.5V − Pin name Functions Input/Output type Type C Type C Type E Type F Demodulator quality Good data : High, bad data : Low Demodulator data Reference voltage Input Refer to output data timing 1/2 VDD1 (refer to input/output circuits) Compos.

BU1924FS : Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol QUAL RDATA Vref MUX VDD1 VSS1 VSS3 CMP T2 T1 VSS2 VDD2 XI XO (N.C.) RCLK Crystal oscillator − Demodulator clock Digital power supply 2.7V to 5.5V Connects to 4.332MHz oscillator (refer to input/output circuits) − 1187.5Hz clock (refer to the timing diagram) Test input Open or connected to ground Type B − Comparator input C-junction (refer to input/output circuits ) Type D Analog power supply 2.7V to 5.5V − Pin name Functions Input/Output type Type C Type C Type E Type F Demodulator quality Good data : High, bad data : Low Demodulator data Reference voltage Input Refer to output data timing 1/2 VDD1 (refer to input/output circuits) Compos.