CDB3308 Cirrus Logic Inc, CDB3308 Datasheet - Page 2

• Manufacturer Part Number: CDB3308
• Description: BOARD EVAL FOR CS3308 VOL CTRL
• Manufacturer: Cirrus Logic Inc

Specifications of CDB3308

• Main Purpose: Audio, Volume Control
• Embedded: No
• Utilized Ic / Part: CS3308
• Primary Attributes: 8 Single-Ended Analog Inputs and Outputs, USB or RS232 Interface
• Secondary Attributes: Graphic User Interface
• Description/function: Audio DSPs
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS3308
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1496

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TABLE OF CONTENTS
1. PIN DESCRIPTIONS ............................................................................................................................ 5
2. CHARACTERISTICS AND SPECIFICATIONS .................................................................................... 7
SPECIFIED OPERATING CONDITIONS .................................................................................................... 7
ABSOLUTE MAXIMUM RATINGS............................................................................................................... 7
ANALOG CHARACTERISTICS ................................................................................................................... 8
DIGITAL INTERFACE CHARACTERISTICS............................................................................................... 9
MUTE SWITCHING CHARACTERISTICS .................................................................................................. 9
CONTROL PORT SWITCHING CHARACTERISTICS - I²C FORMAT...................................................... 10
CONTROL PORT SWITCHING CHARACTERISTICS - SPI™ FORMAT ................................................. 11
3. TYPICAL CONNECTION DIAGRAM ................................................................................................. 12
4. DETAILED BLOCK DIAGRAM .......................................................................................................... 13
5. APPLICATIONS ................................................................................................................................. 14
5.8.2.1 SPI Mode Serial Control Configuration .......................................................................................... 24
5.8.2.2 I²C Mode Control Configuration ..................................................................................................... 26
6. CS3308 REGISTER QUICK REFERENCE ........................................................................................ 29
7. CS3308 REGISTER DESCRIPTIONS ................................................................................................ 31
5.1 General Description ..................................................................................................................... 14
5.2 System Design ............................................................................................................................ 14
5.3 Power-Up and Power-Down ........................................................................................................ 15
5.4 Volume & Muting Control Architecture ........................................................................................ 17
5.5 Volume Controls .......................................................................................................................... 19
5.6 Muting Controls ........................................................................................................................... 21
5.7 Zero-Crossing Detection .............................................................................................................. 22
5.8 System Serial Control Configuration ........................................................................................... 23
5.9 I²C/SPI Serial Control Formats .................................................................................................... 27
7.1 Ch 1-8 Volume - Addresses 01h - 08h ........................................................................................ 31
7.2 ¼ dB Control - Address 09h ........................................................................................................ 32
7.3 Mute Control - Address 0Ah ........................................................................................................ 33
7.4 Device Configuration 1 - Address 0Bh (Bit 5) .............................................................................. 33
5.2.1 Analog Inputs .................................................................................................................... 14
5.2.2 Analog Outputs .................................................................................................................. 15
5.2.3 Recommended Layout, Grounding, and Power Supply Decoupling ................................. 15
5.3.1 Recommended Power-Up Sequence ................................................................................ 16
5.3.2 Recommended Power-Down Sequence ........................................................................... 16
5.4.1 Control Mapping Matrix ..................................................................................................... 17
5.4.2 Volume & Muting Control Implementation ......................................................................... 18
5.5.1 Individual Channel Volume Controls ................................................................................. 19
5.5.2 Master Volume Controls .................................................................................................... 19
5.5.3 Volume Limits .................................................................................................................... 20
5.6.1 Individual Channel Mute Controls ..................................................................................... 21
5.6.2 Master Mute Controls ........................................................................................................ 21
5.6.3 Hardware Mute Control ..................................................................................................... 21
5.7.1 Zero-Crossing Modes ........................................................................................................ 22
5.7.2 Zero-Crossing Time-Out .................................................................................................... 22
5.8.1 Serial Control within a Single-CS3308 System ................................................................. 23
5.8.2 Serial Control within a Multiple-CS3308 System ............................................................... 24
5.9.1 I²C Mode ............................................................................................................................ 27
5.9.2 SPI Mode ........................................................................................................................... 28
7.1.1 Volume Control (Bits 7:0) .................................................................................................. 31
7.2.1 ¼ dB Control (Bit 0 - 7) ...................................................................................................... 32
7.3.1 Mute Channel X (Bit 0 - 7) ................................................................................................. 33
7.4.1 Enable MUTE Input (Bit 5) ................................................................................................ 33
CS3308
DS702F1