Digital Audio, Sample Rate Converter

The CS8420 is a stereo, digital audio sample rate converter (SRC) with AES3 type and serial digital audio inputs, AES3 type and serial digital audio outputs, along with comprehensive control via a 4-wire micro-controller port. Channel Status and User data can be assembled in block-sized buffers, making read/modify/write cycles easy.

Digital audio inputs and outputs may be 24, 20, or 16 bits. The input data can be completely asynchronous to the output data with the output data synchronous to an external system clock.

Target applications include CD-R, DAT, MD, DVD, and VTR equipment, mixing consoles, digital audio transmission equipment, high-quality D/A and A/D converters, effects processors, and computer audio systems.

• Complete IEC60958, AES3, S/PDIF, EIAJ CP1201 compatible transceiver with asynchronous sample rate converter
• Flexible 3-wire serial digital I/O ports
• 8 kHz to 108 kHz sample rate range
• 1:3 and 3:1 maximum input to output sample rate ratio
• 128 dB dynamic range
• -117 dB THD+N at 1 kHz
• Excellent performance at almost a 1:1 ratio
• Excellent clock jitter rejection
• 24-bit I/O words
• Pin and micro-controller read/write access to Channel Status and User data
• Micro-controller mode
• Package: 28-pin SOIC