Parallel-port 16-bit Soundport Stereo Codec -

The Parallel-Port AD1848K SoundPort Stereo Codec inte- grates the key Audio Data Conversion and control functions into a single integrated circuit. The AD1848K is intended to provide a complete, single-chip Audio solution for business Audio and Multimedia applications requiring operation from a single +5 V supply. It provides a direct, byte-wide Interface to both ISA (AT) and EISA computer buses for simplified implementa- tion on a computer motherboard or add-in card. The AD1848K generates enable and direction controls for IC Buffers such as 74_245. The AD1848K SoundPort Stereo Codec supports a DMA re- quest/grant architecture for transferring data with the host com- puter bus. One or two DMA channels CAN be supported. Programmed I/O (PIO) mode is also supported for control Register accesses and for applications lacking DMA control. Two input control lines support mixed direct and indirect addressing of twenty-one internal control Registers over this asynchronous Interface By Analog Devices, Inc.