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AKD7752 Datasheet(PDF) 7 Page - Asahi Kasei Microsystems |
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AKD7752 Datasheet(HTML) 7 Page - Asahi Kasei Microsystems |
7 / 23 page [AK7752] No. Pin Name I/O Function Classification 50 CKM[1] I Clock Mode Select Pin 1 Mode Select 51 CKM[0] I Clock Mode Select Pin 0 52 TESTI1 I TEST pin (Internal pull-down) Connect to DVSS. TEST 53 LFLT O PLL RC component connect pin Connect a series resistor and capacitor pair to this pin. Analog Output 54 AVSS - Analog ground Pin 0V (Silicon substrate potential) Analog 55 AVDD - Power Supply Pin for Analog Section (3.3V typical) Power Supply 56 ANE_IN I ADC Analog Input Pin (ANE_IN) Normally connected to the microphone amplifier. Analog Input 57 ALINE_IN I ADC Analog Input Pin (ALINE_IN) Normally the receiving analog phone voice signal is input. 58 AVDD - Analog Power Supply Pin (3.3V typical) Analog Power Supply 59 VREFH I Analog Reference Voltage Input Pin Connect this pin to AVDD. Connect capacitors of 0.1 uF and 10 uF between this pin and AVSS. Analog Input 60 VCOM O Analog Common Voltage Output pin Connect capacitors of 0.1 uF and 10 uF between this pin and AVSS. No external circuits should be connected to this pin. Analog Output 61 VREFL I Analog Reference Voltage Input pin Connect this pin to AVSS. Analog Input 62 AVSS - Analog ground Pin 0V (Silicon substrate potential) Analog Power Supply 63 ALINE_OUT O DAC Analog Output Pin (ALINE_OUT) Normally the sending analog phone voice signal is output. 64 ANE_OUT O DAC Analog Output Pin (ANE_OUT) Normally connected to the speaker amplifier. Analog Output Note 1. Do NOT leave digital input pins open except for pins that indicate “Internal pull down”, BITCLK_I and SYNC_I at master mode. (Internal pull down pins except TEST1 and TEST2 pins leave them open or connect them to DVSS. Connect TEST1 and TEST2 pins to DVSS). Note 2. When analog input pins (ALINE_IN, ANE_IN) are not used, leave them open. Note 3. Connect I2CSEL to “L” (DVSS) or “H” (DVDD). Relationship between I2CSEL and SDA uP I/F I2CSEL INIT_RESET_N SDA Normal Serial L L L Interface L H L I2C Bus Mode H L “Hi-Z” → pull-up H H function MS0578-E-01 -PB 2007/0 9 - 7 - |
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