CDB42438 Cirrus Logic Inc, CDB42438 Datasheet - Page 2

• Manufacturer Part Number: CDB42438
• Description: Eval Bd 108dB 6&8ch Multi-Chnl CODECs
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42438

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42438
• Primary Attributes: 6 Single-Ended and 2 Differential Analog Inputs and 8 Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: Graphic User Interface
• Description/function: Audio CODECs
• Operating Supply Voltage: 5 V to 12 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: CS42438
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1500

2
TABLE OF CONTENTS
1. PIN DESCRIPTIONS - SOFTWARE MODE ......................................................................................... 6
2. PIN DESCRIPTIONS - HARDWARE MODE
3. TYPICAL CONNECTION DIAGRAMS ................................................................................................. 11
4. CHARACTERISTICS AND SPECIFICATIONS .................................................................................... 13
5. APPLICATIONS ................................................................................................................................... 26
RECOMMENDED OPERATING CONDITIONS ................................................................................... 13
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 13
ANALOG INPUT CHARACTERISTICS (COMMERCIAL) .................................................................... 14
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE) ..................................................................... 15
ADC DIGITAL FILTER CHARACTERISTICS ....................................................................................... 16
ANALOG OUTPUT CHARACTERISTICS (COMMERCIAL) ................................................................ 17
ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE) ................................................................. 18
COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE .............................. 20
SWITCHING SPECIFICATIONS - ADC/DAC PORT ............................................................................ 21
SWITCHING CHARACTERISTICS - AUX PORT ................................................................................. 22
SWITCHING SPECIFICATIONS - CONTROL PORT - I²C MODE ....................................................... 23
SWITCHING SPECIFICATIONS - CONTROL PORT - SPI FORMAT ................................................. 24
DC ELECTRICAL CHARACTERISTICS .............................................................................................. 25
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS ..................................................... 25
1.1 Digital I/O Pin Characteristics ........................................................................................................... 8
5.1 Overview ......................................................................................................................................... 26
5.2 Analog Inputs .................................................................................................................................. 27
5.3 Analog Outputs ............................................................................................................................... 30
5.4 System Clocking ............................................................................................................................. 33
5.5 CODEC Digital Interface ................................................................................................................. 33
5.6 AUX Port Digital Interface Formats ................................................................................................ 34
5.7 Control Port Description and Timing ............................................................................................... 35
5.2.1 Line-Level Inputs ................................................................................................................... 27
5.2.2 ADC3 Analog Input ................................................................................................................ 28
5.2.3 Hardware Mode ..................................................................................................................... 29
5.2.4 Software Mode ...................................................................................................................... 29
5.2.5 High-Pass Filter and DC Offset Calibration ........................................................................... 29
5.3.1 Initialization ............................................................................................................................ 30
5.3.2 Line-Level Outputs and Filtering ........................................................................................... 30
5.3.3 Digital Volume Control ........................................................................................................... 32
5.3.4 De-Emphasis Filter ................................................................................................................ 32
5.4.1 Hardware Mode ..................................................................................................................... 33
5.4.2 Software Mode ...................................................................................................................... 33
5.5.1
5.5.2 I/O Channel Allocation ........................................................................................................... 34
5.6.1 Hardware Mode ..................................................................................................................... 34
5.6.2 Software Mode ...................................................................................................................... 34
5.6.3 I²S .......................................................................................................................................... 34
5.6.4 Left-Justified .......................................................................................................................... 35
5.7.1 SPI Mode ............................................................................................................................... 35
5.7.2 I²C Mode ................................................................................................................................ 36
5.2.1.1 Hardware Mode ......................................................................................................... 27
5.2.1.2 Software Mode ........................................................................................................... 27
5.2.5.1 Hardware Mode ......................................................................................................... 29
5.2.5.2 Software Mode ........................................................................................................... 29
5.3.3.1 Hardware Mode ......................................................................................................... 32
5.3.3.2 Software Mode ........................................................................................................... 32
TDM ................................................................................................................................. 33
....................................................................................... 9
CS42438
DS646F2