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AK8857VQ Datasheet(PDF) 7 Page - Asahi Kasei Microsystems |
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AK8857VQ Datasheet(HTML) 7 Page - Asahi Kasei Microsystems |
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7 / 105 page  [AK8857VQ] MS1189-E-01 2010/12 -7- Pin No. Symbol P/S1 I/O2 Functional Description 49 OE_B P2 I B block Output Enable pin. L: Digital output pin in Hi-z output mode. H: Data output mode. Hi-z input to OE_B pin is prohibited. 50 OE_A P2 I A block Output Enable pin. L: Digital output pin in Hi-z output mode. H: Data output mode. Hi-z input to OE_A pin is prohibited. 51 PVDD2 P2 P Microprocessor I/F power supply pin. 52 RSTN P2 I Reset signal input pin. Hi-z input is prohibited. L: Reset. H: Normal operation. 53 PDN P2 I Power-down control pin. Hi-z input is prohibited. L: Power-down. H: Normal operation. 54 SDA P2 I/O I2C data pin. Connect to PVDD2 via a pull-up register. Hi-z input possible when RSTN=L. Will not accept SDA input during reset sequence. 55 SCL P2 I I2C clock input pin. Use PVDD2 or lower for input. Hi-z input possible when PDN=L. Will not accept SCL input during reset sequence. 56 SELA P2 I ( O ) I2C bus address selector pin. PVDD2 connection: Slave address [0x8A] DVSS connection: Slave address [0x88] 57 AVDD A P Analog power supply pin. 58 XTO A O Crystal connection pin. Connect to digital ground via 22 pF capacitor as shown in Sec. 10. Use 24.576 MHz crystal. When PDN=L, output level is DVSS. If crystal is not used, connect to NC or DVSS. 59 AVSS A G Analog ground pin. 60 XTI A I Crystal connection pin. Connect to digital ground via 22 pF capacitor as shown in Sec. 10. Use 24.576 MHz crystal resonator. For input from 24.576 MHz crystal oscillator, use this pin. 61 VRN A O Internal reference negative voltage pin for AD converter. Connect to AVSS via ≥0.1 µF ceramic capacitor. 62 IREF A O Reference current setting pin. Connect to ground via 6.8 kΩ (≤1% accuracy) resistor. |
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