General Description The CS8405A is a monolithic CMOS device which encodes and transmits audio data according to the AES3, IEC60958, S/PDIF, or EIAJ CP1201. The CS8405A accepts audio and digital data, which is then multiplexed, encoded, and driven onto a cable. The audio data is input through a configurable, 3-wire input port. The channel status and user bit data are input through an SPI or I²C microcontroller port, and may be assembled in block-sized buffers. For systems with no microcontroller, a standalone mode allows direct access to channel status and user bit data pins. Target applications include A/V Receivers, CD-R, DVD receivers, digital mixing consoles, effects processors, set-top boxes, and computer or automotive audio systems. Features ● Complete EIAJ CP1201, IEC-60958, AES3, S/PDIF-compatible Transmitter ● +5.0 V Digital Supply (VD+) ● +3.3 V or 5.0 V Digital Interface (VL+) ● On-chip channel status and user bit buffer memories allow block-sized updates. ● Flexible 3-wire Serial Digital Audio Input Port ● Up to 96 kHz Frame Rate ● Microcontroller Write Access to Channel Status and User Bit Data ● On-chip Differential Line Driver ● Generates CRC Codes and Parity Bits ● Standalone Mode Allows use Without a Microcontroller
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