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CS4385-DQZ Datasheet(PDF) 5 Page - Cirrus Logic |
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CS4385-DQZ Datasheet(HTML) 5 Page - Cirrus Logic |
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5 / 56 page  CS4385 DS671A1 5 VQ 21 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be capacitively coupled to analog ground, as shown in the Typical Connection Diagram. The nominal voltage level is specified in the Analog Characteristics and Specifications section. VQ presents an appreciable source impedance and any current drawn from this pin will alter device performance. However, VQ can be used to bias the analog circuitry assuming there is no AC signal component and the DC current is less than the maximum specified in the Analog Characteristics and Specifications section. MUTEC1 MUTEC234 41 22 Mute Control (Output) - The Mute Control pins go high during power-up initialization, reset, muting, power-down or if the master clock to left/right clock frequency ratio is incorrect. These pins are intended to be used as a control for external mute circuits to prevent the clicks and pops that can occur in any sin- gle supply system. The use of external mute circuits are not mandatory but may be desired for designs requiring the absolute minimum in extraneous clicks and pops. AOUTA1 +,- AOUTB1 +,- AOUTA2 +,- AOUTB2 +,- AOUTA3 +,- AOUTB3 +,- AOUTA4 +,- AOUTB4 +,- 39, 40 38, 37 35, 36 34, 33 29, 30 28, 27 25, 26 24, 23 Differential Analog Output (Output) - The full scale differential analog output level is specified in the Analog Characteristics specification table. VA 32 Analog Power (Input) - Positive power supply for the analog section. Refer to the Recommended Oper- ating Conditions for appropriate voltages. VLS 43 Serial Audio Interface Power (Input) - Determines the required signal level for the serial audio inter- face. Refer to the Recommended Operating Conditions for appropriate voltages. Software Mode Definitions SCL/CCLK 15 Serial Control Port Clock (Input) - Serial clock for the serial control port. Requires an external pull-up resistor to the logic interface voltage in I2C mode as shown in the Typical Connection Diagram. SDA/CDIN 16 Serial Control Data (Input/Output) - SDA is a data I/O line in I2C mode and requires an external pull-up resistor to the logic interface voltage, as shown in the Typical Connection Diagram. CDIN is the input data line for the control port interface in SPI mode. AD0/CS 17 Address Bit 0 (I2C) / Chip Select (SPI) (Input) - AD0 is a chip address pin in I2C mode; CS is the chip select signal for SPI format. TST 10 12 Test (Input) - These pins are not used in software mode and should not be left floating (connect to ground). Hardware Mode Definitions M0 M1 M2 M3 M4 17 16 15 12 10 Mode Selection (Input) - Determines the operational mode of the device as detailed in Tables 4 and 5. DSD Definitions DSD_SCLK 42 DSD Serial Clock (Input) - Serial clock for the Direct Stream Digital audio interface. DSDA1 DSDB1 DSDA2 DSDB2 DSDA3 DSDB3 DSDA4 DSDB4 3 2 1 48 47 46 45 44 Direct Stream Digital Input (Input) - Input for Direct Stream Digital serial audio data. Pin Name # Pin Description |
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