CDB42438

The CDB42438 evaluation board is an excellent means for evaluating the CS42438 CODEC. Evaluation requires an analog/digital signal source and analyzer, and power supplies. Optionally, a Windows PC compatible computer may be used to evaluate the CS42438 in software mode.

System timing can be provided by the CS8416, or by a DSP I/O stake header with a DSP connected. System timing for TDM mode is provided by an FPGA using clocks derived from the CS8416 or DSP I/O header.

RCA phono jacks are provided for the CS42438 analog inputs and outputs. Digital data I/O is available via RCA phono or optical connectors to the CS8416 and CS8406. 6 pre-defined board setup options are selectable using a 6-position DIP switch.

The Windows software provides a GUI to make configuration of the CDB42438 easy. The software communicates through the PC's serial port to configure the control port registers so that all features of the CS42438 can be evaluated. The evaluation board may also be configured to accept external timing and data signals for operation in a user application during system development.

• Single-ended/Single-ended to Differential Analog Inputs
• Single-ended/Differential to Single-ended Analog Outputs
• CS8406 S/PDIF Digital Audio Transmitter
• CS8416 S/PDIF Digital Audio Receiver
• Header for Optional External Software Configuration of CS42438
• Header for External DSP Serial Audio I/O
• 3.3 V Logic Interface
• Pre-defined Software Scripts
• S/PDIF-to-TDM Conversion for Easy Evaluation of the TDM Digital Interface
• Demonstrates Recommended Layout and Grounding Arrangements
• Windows® Compatible Software Interface to Configure CS42438 and Inter-board Connections