FEATURES
Low Cost, Pin- and Register-Compatible Alternative to AD1848 Single-Chip Integrated ∑∆ Digital Audio Stereo Codec Supports the Microsoft Windows Sound System* Multiple Channels of Stereo Input and Output Analog and Digital Signal Mixing Programmable Gain and Attenuation On-Chip Signal Filters Digital Interpolation and Decimation Analog Output Low-Pass Sample Rates from 5.5 kHz to 48 kHz 68-Lead PLCC Package Operation from +5 V Supply Byte-Wide Parallel Interface to ISA and EISA Buses Supports One or Two DMA Channels and Programmed I/O PRODUCT OVERVIEW Low Cost Parallel-Port 16-Bit SoundPort Stereo Codec AD1846 It provides a direct, byte-wide interface to both ISA (“AT”) and EISA computer buses for simplified implementation on a computer motherboard or add-in card. 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.
Analog Devices
