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CS42438-DMZ Scheda tecnica(PDF) 7 Page - Cirrus Logic |
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CS42438-DMZ Scheda tecnica(HTML) 7 Page - Cirrus Logic |
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7 / 64 page  DS646PP2 7 1.1 Digital I/O Pin Characteristics Various pins on the CS42438 are powered from separate power supply rails. The logic level for each input should adhere to the corresponding power rail and should not exceed the maximum ratings. AUX_SCLK 16 Auxiliary Serial Clock (Output) - Serial clock for the Auxiliary serial audio interface. AUX_SDIN 17 Auxiliary Serial Input (Input) - The CS42438 provides an additional serial input for two’s comple- ment serial audio data. AOUT1 +,- AOUT2 +,- AOUT3 +,- AOUT4 +,- AOUT5 +,- AOUT6 +,- 20,19 21,22 24,23 25,26 28,27 29,30 Differential Analog Output (Output) - The full-scale differential analog output level is specified in the Analog Characteristics specification table. Each positive leg of the differential outputs may also be used single-ended. AGND 35,48 Analog Ground (Input) - VQ 36 Quiescent Voltage (Output) - Filter connection for internal quiescent reference voltage. VA 37,46 Analog Power (Input) - Positive power supply for the analog section. AIN1 +,- AIN2 +,- AIN3 +,- AIN4 +,- AIN5 +,- AIN6 +,- 39,38 41,40 43,42 45,44 50,49 52,51 Differential Analog Input (Input) - Signals are presented differentially to the delta-sigma modula- tors. The full-scale input level is specified in the Analog Characteristics specification table. Single- ended inputs may be applied to the positive terminals when the ADCx SINGLE bit is enabled. Once in Single-Ended Mode, the negative terminal of AIN1-AIN4 must be externally driven to com- mon mode. See below for a description of AIN5-AIN6 in Single-Ended Mode. AIN5 A,B AIN6 A,B 50,49 52,51 Single-Ended Analog Input (Input) - In Single-Ended Mode, an internal analog mux allows selec- tion between 2 channels for both analog inputs AIN5 and AIN6 (see section 7.6.6-7.6.8 for details). The unused leg of each input is internally connected to common mode. The full-scale input level is specified in the Analog Characteristics specification table. FILT+ 47 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling cir- cuits. Power Rail Pin Name SW/(HW) I/O Driver Receiver VLC RST Input - 1.8 V - 5.0 V, CMOS SCL/CCLK (AIN5_MUX) Input - 1.8 V - 5.0 V, CMOS, with Hysteresis SDA/CDOUT (AIN6_MUX) Input/ Output 1.8 V - 5.0 V, CMOS/Open Drain 1.8 V - 5.0 V, CMOS, with Hysteresis AD0/CS (MFREQ) Input - 1.8 V - 5.0 V, CMOS AD1/CDIN (ADC3_HPF) Input - 1.8 V - 5.0 V, CMOS VLS MCLK Input - 1.8 V - 5.0 V, CMOS LRCK Input - 1.8 V - 5.0 V, CMOS SCLK Input - 1.8 V - 5.0 V, CMOS ADC_SDOUT (ADC3_SINGLE) Input/ Output 1.8 V - 5.0 V, CMOS - DAC_SDIN Input - 1.8 V - 5.0 V, CMOS AUX_LRCK Output 1.8 V - 5.0 V, CMOS - AUX_SCLK Output 1.8 V - 5.0 V, CMOS - AUX_SDIN Input - 1.8 V - 5.0 V, CMOS Table 1. I/O Power Rails |
Codice articolo simile - CS42438-DMZ |
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Descrizione simile - CS42438-DMZ |
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