Cirrus Logic CS43L21 - Manual (Page 3)

DS723F1 3
CS43L21
TABLE OF CONTENTS
1. PIN DESCRIPTIONS - SOFTWARE (HARDWARE) MODE .................................................................. 6
1.1 Digital I/O Pin Characteristics ........................................................................................................... 8
2. TYPICAL CONNECTION DIAGRAMS ................................................................................................... 9
3. CHARACTERISTIC AND SPECIFICATION TABLES ......................................................................... 11
SPECIFIED OPERATING CONDITIONS ............................................................................................. 11
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 11
ANALOG OUTPUT CHARACTERISTICS (COMMERCIAL - CNZ) ...................................................... 12
ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE - DNZ) ...................................................... 13
LINE OUTPUT VOLTAGE CHARACTERISTICS ................................................................................. 14
HEADPHONE OUTPUT POWER CHARACTERISTICS ...................................................................... 15
COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE .............................. 16
SWITCHING SPECIFICATIONS - SERIAL PORT ............................................................................... 16
SWITCHING SPECIFICATIONS - I²C CONTROL PORT ..................................................................... 18
SWITCHING CHARACTERISTICS - SPI CONTROL PORT ................................................................ 19
DC ELECTRICAL CHARACTERISTICS .............................................................................................. 20
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS ..................................................... 20
POWER CONSUMPTION .................................................................................................................... 21
4. APPLICATIONS ................................................................................................................................... 22
4.1 Overview ......................................................................................................................................... 22
4.1.1 Architecture ........................................................................................................................... 22
4.1.2 Line & Headphone Outputs ................................................................................................... 22
4.1.3 Signal Processing Engine ..................................................................................................... 22
4.1.4 Beep Generator ..................................................................................................................... 22
4.1.5 Device Control (Hardware or Software Mode) ...................................................................... 22
4.1.6 Power Management .............................................................................................................. 22
4.2 Hardware Mode .............................................................................................................................. 23
4.3 Analog Outputs ............................................................................................................................... 24
4.3.1 De-Emphasis Filter ................................................................................................................ 24
4.3.2 Volume Controls .................................................................................................................... 25
4.3.3 Mono Channel Mixer ............................................................................................................. 25
4.3.4 Beep Generator ..................................................................................................................... 25
4.3.5 Tone Control .......................................................................................................................... 26
4.3.6 Limiter .................................................................................................................................... 26
4.3.7 Line-Level Outputs and Filtering ........................................................................................... 27
4.3.8 On-Chip Charge Pump .......................................................................................................... 28
4.4 Serial Port Clocking ........................................................................................................................ 28
4.4.1 Slave ..................................................................................................................................... 29
4.4.2 Master ................................................................................................................................... 29
4.4.3 High-Impedance Digital Output ............................................................................................. 30
4.4.4 Quarter- and Half-Speed Mode ............................................................................................. 30
4.5 Digital Interface Formats ................................................................................................................ 30
4.6 Initialization ..................................................................................................................................... 31
4.7 Recommended Power-Up Sequence ............................................................................................. 31
4.8 Recommended Power-Down Sequence ........................................................................................ 32
4.9 Software Mode ............................................................................................................................... 34
4.9.1 SPI Control ............................................................................................................................ 34
4.9.2 I²C Control ............................................................................................................................. 34
4.9.3 Memory Address Pointer (MAP) ............................................................................................ 36
4.9.3.1 Map Increment (INCR) ............................................................................................... 36
5. REGISTER QUICK REFERENCE ........................................................................................................ 37
6. REGISTER DESCRIPTION .................................................................................................................. 40
6.1 Chip I.D. and Revision Register (Address 01h) (Read Only) ......................................................... 40