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CS4245 Datasheet(PDF) 3 Page - Cirrus Logic |
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CS4245 Datasheet(HTML) 3 Page - Cirrus Logic |
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3 / 54 page  CS4245 3 TABLE OF CONTENTS 1. PIN DESCRIPTIONS ............................................................................................................... 5 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 (CONT’D) ......................................... 17 AUXILIARY OUTPUT ANALOG CHARACTERISTICS (CONT’D) ......................................... 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 ................................................................ 31 4.5 Input Connections ........................................................................................................... 32 4.6 Output Connections ........................................................................................................32 4.7 Output Transient Control ................................................................................................ 32 4.7.1 Power-up ............................................................................................................ 32 4.7.2 Power-down ....................................................................................................... 32 4.7.3 Serial Interface Clock Changes ......................................................................... 32 4.8 Auxiliary Analog Output .................................................................................................. 32 4.9 De-Emphasis Filter ......................................................................................................... 33 4.10 Internal Digital Loopback .............................................................................................. 33 4.11 Mute Control ................................................................................................................. 33 4.12 Control Port Description and Timing ............................................................................. 34 4.12.1 SPI Mode ......................................................................................................... 34 4.12.2 I²C Mode .......................................................................................................... 35 4.13 Interrupts and Overflow ................................................................................................ 37 4.14 Reset ........................................................................................................................... 37 4.15 Synchronization of Multiple Devices ............................................................................. 37 4.16 Grounding and Power Supply Decoupling .................................................................... 37 5. REGISTER QUICK REFERENCE ......................................................................................... 38 6. REGISTER DESCRIPTION ................................................................................................... 39 6.1 Chip ID - Register 01h ....................................................................................................39 6.2 Power Control - Address 02h ......................................................................................... 39 6.3 DAC Control - Address 03h ............................................................................................ 40 6.4 ADC Control - Address 04h ............................................................................................ 41 6.5 MCLK Frequency - Address 05h .................................................................................... 42 |
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