2

DS640PP4

CS44L11

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ..................................................................................... 4

PERFORMANCE SPECIFICATIONS.................................................................................................... 5

SWITCHING CHARACTERISTICS .......................................................................................................8

SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT ............................................... 9

2. TYPICAL CONNECTION DIAGRAMS ................................................................................................10

3. REGISTER QUICK REFERENCE

................................................................................................... 12

4. REGISTER DESCRIPTIONS ............................................................................................................... 13

4.1 Power and Muting Control (address 02h) .....................................................................................13

4.1.1 Soft Ramp and Zero Cross Control (SZC) ....................................................................... 13

4.1.2 Power Down (PDN) ......................................................................................................... 13

4.1.3 Float Output (FLT) .......................................................................................................... 13

4.1.4 Ramp-Up Bypass (RUPBYP) ........................................................................................... 14

4.1.5 Ramp-Down Bypass (RDNBYP) ...................................................................................... 14

4.2 Channel A Volume Control (address 03h) (VOLA) ....................................................................... 14

4.3 Channel B Volume Control (address 04h) (VOLB) ....................................................................... 14

4.4 Tone Control (address 05h) .......................................................................................................... 15

4.4.1 Bass Boost Level (BB) ..................................................................................................... 15

4.4.2 Treble Boost Level (TB) ................................................................................................... 15

4.5 Mode Control 1 (address 06h) ...................................................................................................... 15

4.5.1 Bass Boost Corner Frequency (BBCF) ............................................................................ 16

4.5.2 Treble Boost Corner Frequency (TBCF) .......................................................................... 16

4.5.3 Tone Control Mode (TC) .................................................................................................. 17

4.5.4 Tone Control Enable (TC_EN) ........................................................................................ 17

4.5.5 Peak Signal Limiter Enable (LIM_EN) ............................................................................. 17

4.6 Limiter Attack Rate (address 07h) (ARATE) ................................................................................. 18

4.7 Limiter Release Rate (address 08h) (RRATE)

........................................................................ 18

4.8 Volume and Mixing Control (address 09h) ................................................................................... 19

4.8.1 Ramp Speed (RMP_SP) .................................................................................................. 19

4.8.2 ATAPI Channel Mixing and Muting (ATAPI) .................................................................... 19

4.9 Mode Control 2 (address 0Ah) ..................................................................................................... 20

4.9.1 Master Clock Divide Enable (MCLKDIV) ......................................................................... 20

4.9.2 Clock Divide (CLKDIV) ..................................................................................................... 20

4.9.3 Double-Speed Mode (DBS) ............................................................................................. 21

4.9.4 Frequency Shift (FRQSFT) .............................................................................................. 21

4.9.5 De-Emphasis Control (DEM) .......................................................................................... 22

4.10 Mode Control 3 (address 0Bh) ................................................................................................... 23

4.10.1 Digital Interface Formats (DIF) ....................................................................................... 23

4.10.2 Channel A Volume = Channel B Volume (A=B) ............................................................. 23

4.10.3 Volume Control Bypass (VCBYP) .................................................................................. 23

4.10.4 Control Port Enable (CP_EN) ........................................................................................ 23

4.10.5 Freeze (FREEZE) .......................................................................................................... 24

4.11 Revision Indicator (address 0Ch)[Read Only] ........................................................................... 24

5. PIN DESCRIPTION .............................................................................................................................. 25

6. APPLICATIONS ................................................................................................................................. 26

6.1 Grounding and Power Supply Decoupling .................................................................................... 26

6.2 Clock Modes ................................................................................................................................. 26

6.3 De-Emphasis ................................................................................................................................ 26

6.4 PWM PopGuard Transient Control ............................................................................................... 26

6.5 Recommended Power-Up Sequence ........................................................................................... 27

6.5.1 Stand-Alone Mode ........................................................................................................... 27

6.5.2 Control Port Mode ............................................................................................................ 27

7. CONTROL PORT INTERFACE ........................................................................................................... 28