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CS42L51 Datasheet(PDF) 8 Page - Cirrus Logic |
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CS42L51 Datasheet(HTML) 8 Page - Cirrus Logic |
8 / 83 page 8 DS679A2 CS42L51 DAC_FILT+ ADC_FILT+ 14 16 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits. VQ 15 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. MICIN1/ AIN3A 17 Microphone Input 1 (Input) - The full-scale level is specified in the ADC Analog Characteristics specifi- cation table. MICIN2/ BIAS/AIN3B 18 Microphone Input 2 (Input/Output) - The full-scale level is specified in the ADC Analog Characteristics specification table. This pin can also be configured as an output to provide a low noise bias supply for an external microphone. Electrical characteristics are specified in the DC Electrical Characteristics table. AIN2A 19 Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification table. AIN2B/BIAS 20 Analog Input (Input/Output) - The full-scale level is specified in the ADC Analog Characteristics specifi- cation table. This pin can also be configured as an output to provide a low noise bias supply for an exter- nal microphone. Electrical characteristics are specified in the DC Electrical Characteristics table. AFILTA AFILTB 21 22 Filter Connection (Output) - Filter connection for the ADC inputs. AIN1A AIN1B 23 24 Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification table. RESET 25 Reset (Input) - The device enters a low power mode when this pin is driven low. VL 26 Digital Interface Power (Input) - Determines the required signal level for the serial audio interface and host control port. Refer to the Recommended Operating Conditions for appropriate voltages. VD 27 Digital Power (Input) - Positive power for the internal digital section. DGND 28 Digital Ground (Input) - Ground reference for the internal digital section. SDOUT 29 Serial Audio Data Output (Output) - Output for two’s complement serial audio data. (M/S) Serial Port Master/Slave (Input/Output) - Hardware Mode Startup Option: Selects between master and slave mode for the serial port. MCLK 30 Master Clock (Input) -Clock source for the delta-sigma modulators. SCLK 31 Serial Clock (Input/Output) - Serial clock for the serial audio interface. SDIN 32 Serial Audio Data Input (Input) - Input for two’s complement serial audio data. Thermal Pad - Thermal relief pad for optimized heat dissipation. See “QFN Thermal Pad” on page 77. |
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