CDB43L22 Ver la hoja de datos (PDF) - Cirrus Logic

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CDB43L22

Low Power, Stereo DAC w/Headphone & Speaker Amps

Cirrus Logic 

Confidential Draft

3/4/10

CS43L22

TABLE OF CONTENTS

1. PIN DESCRIPTIONS .............................................................................................................................. 7

1.1 I/O Pin Characteristics ..................................................................................................................... 8

2. TYPICAL CONNECTION DIAGRAM ..................................................................................................... 9

3. CHARACTERISTIC AND SPECIFICATIONS ...................................................................................... 10

RECOMMENDED OPERATING CONDITIONS .................................................................................. 10

ABSOLUTE MAXIMUM RATINGS ...................................................................................................... 10

ANALOG OUTPUT CHARACTERISTICS .......................................................................................... 11

ANALOG PASSTHROUGH CHARACTERISTICS .............................................................................. 12

PWM OUTPUT CHARACTERISTICS ................................................................................................. 13

HEADPHONE OUTPUT POWER CHARACTERISTICS ..................................................................... 14

LINE OUTPUT VOLTAGE LEVEL CHARACTERISTICS .................................................................... 15

COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ............................. 15

SWITCHING SPECIFICATIONS - SERIAL PORT .............................................................................. 16

SWITCHING SPECIFICATIONS - I²C CONTROL PORT .................................................................... 17

DC ELECTRICAL CHARACTERISTICS .............................................................................................. 18

DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS .................................................... 18

POWER CONSUMPTION ................................................................................................................... 19

4. APPLICATIONS ................................................................................................................................... 20

4.1 Overview ........................................................................................................................................ 20

4.1.1 Basic Architecture ................................................................................................................. 20

4.1.2 Line Inputs ............................................................................................................................. 20

4.1.3 Line & Headphone Outputs ................................................................................................... 20

4.1.4 Speaker Driver Outputs ......................................................................................................... 20

4.1.5 Fixed Function DSP Engine .................................................................................................. 20

4.1.6 Beep Generator ..................................................................................................................... 20

4.1.7 Power Management .............................................................................................................. 20

4.2 DSP Engine .................................................................................................................................. 21

4.2.1 Beep Generator ..................................................................................................................... 22

4.2.2 Limiter .................................................................................................................................... 22

4.3 Analog Passthrough ....................................................................................................................... 24

4.4 Analog Outputs .............................................................................................................................. 25

4.5 PWM Outputs ................................................................................................................................. 26

4.5.1 Mono Speaker Output Configuration ..................................................................................... 27

4.5.2 VP Battery Compensation ..................................................................................................... 27

4.5.2.1 Maintaining a Desired Output Level ........................................................................... 27

4.6 Serial Port Clocking ....................................................................................................................... 29

4.7 Digital Interface Formats ................................................................................................................ 30

4.7.1 DSP Mode ............................................................................................................................. 31

4.8 Initialization .................................................................................................................................... 31

4.9 Recommended Power-Up Sequence ............................................................................................ 31

4.10 Recommended Power-Down Sequence ...................................................................................... 31

4.11 Required Initialization Settings ..................................................................................................... 32

5. CONTROL PORT OPERATION ........................................................................................................... 33

5.1 I²C Control ...................................................................................................................................... 33

5.1.1 Memory Address Pointer (MAP) ............................................................................................ 34

5.1.1.1 Map Increment (INCR) ............................................................................................... 34

6. REGISTER QUICK REFERENCE ........................................................................................................ 35

7. REGISTER DESCRIPTION .................................................................................................................. 37

7.1 Chip I.D. and Revision Register (Address 01h) (Read Only) ......................................................... 37

7.1.1 Chip I.D. (Read Only) ............................................................................................................ 37

7.1.2 Chip Revision (Read Only) .................................................................................................... 37

7.2 Power Control 1 (Address 02h) ...................................................................................................... 37

DS792F2

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