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CS4245 Arkusz danych(PDF) 3 Page - Cirrus Logic |
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CS4245 Arkusz danych(HTML) 3 Page - Cirrus Logic |
3 / 57 page DS656F2 3 CS4245 TABLE OF CONTENTS 1. PIN DESCRIPTIONS ........................................................................................................................ 6 2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 8 SPECIFIED OPERATING CONDITIONS ............................................................................................. 8 ABSOLUTE MAXIMUM RATINGS .......................................................................................................8 DAC ANALOG CHARACTERISTICS ................................................................................................... 9 DAC COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ............................ 10 ADC ANALOG CHARACTERISTICS ................................................................................................. 12 ADC ANALOG CHARACTERISTICS ................................................................................................. 14 ADC DIGITAL FILTER CHARACTERISTICS ..................................................................................... 15 AUXILIARY OUTPUT ANALOG CHARACTERISTICS ...................................................................... 16 AUXILIARY OUTPUT ANALOG CHARACTERISTICS ...................................................................... 17 AUXILIARY OUTPUT ANALOG CHARACTERISTICS ...................................................................... 18 DC ELECTRICAL CHARACTERISTICS ............................................................................................. 19 DIGITAL INTERFACE CHARACTERISTICS ...................................................................................... 20 SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT 1 .......................................................... 21 SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT 2 .......................................................... 23 SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT ............................................ 26 SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT ........................................... 27 3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 28 4. APPLICATIONS ................................................................................................................................... 29 4.1 Recommended Power-Up Sequence ............................................................................................. 29 4.2 System Clocking ............................................................................................................................. 29 4.2.1 Synchronous / Asynchronous Mode ...................................................................................... 29 4.2.2 Master Clock ......................................................................................................................... 29 4.2.3 Master Mode ......................................................................................................................... 30 4.2.4 Slave Mode ........................................................................................................................... 30 4.3 High-Pass Filter and DC Offset Calibration .................................................................................... 31 4.4 Analog Input Multiplexer, PGA, and Mic Gain ................................................................................32 4.5 Input Connections ........................................................................................................................... 32 4.6 Output Connections ........................................................................................................................ 32 4.7 Output Transient Control ................................................................................................................ 33 4.7.1 Power-Up .............................................................................................................................. 33 4.7.2 Power-Down .......................................................................................................................... 33 4.7.3 Serial Interface Clock Changes ............................................................................................. 33 4.8 Auxiliary Analog Output .................................................................................................................. 33 4.9 De-Emphasis Filter ......................................................................................................................... 33 4.10 Internal Digital Loopback .............................................................................................................. 34 4.11 Mute Control ................................................................................................................................. 34 4.12 Control Port Description and Timing ............................................................................................. 35 4.12.1 SPI Mode ............................................................................................................................. 35 4.12.2 I²C Mode .............................................................................................................................. 36 4.13 Interrupts and Overflow ................................................................................................................ 37 4.14 Reset ............................................................................................................................................ 38 4.15 Synchronization of Multiple Devices ............................................................................................. 38 4.16 Grounding and Power Supply Decoupling .................................................................................... 38 5. REGISTER QUICK REFERENCE ........................................................................................................ 39 6. REGISTER DESCRIPTION .................................................................................................................. 40 6.1 Chip ID - Register 01h .................................................................................................................... 40 6.2 Power Control - Address 02h ......................................................................................................... 40 6.2.1 Freeze (Bit 7) ......................................................................................................................... 40 6.2.2 Power-Down MIC (Bit 3) ........................................................................................................ 40 6.2.3 Power-Down ADC (Bit 2) ....................................................................................................... 40 |
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