Creative SB0350 Hardware Programming Guide - Page 15
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1-2 Hardware Overview Anatomy of Sound Blaster Family of Audio Cards This section describes the major building blocks of the Sound Blaster family of audio cards. The functionalities and features of the following components will be presented Digital Sound Processor (DSP) chip Mixer chip FM Synthesizer chip Bus Interface chip Advanced Signal Processor Digital Sound Processor Chip The Digital Sound Processor chip is one of the most important components on the Sound Blaster card. It interprets the DSP commands and then carries out one of the following tasks Performs 8/16 bit Mono/Stereo digitized sound recording and playback Performs 4:1, 3:1 and 2:1 ADPCM decompression in Sound Blaster mode Control the sampling rate Interprets Sound Blaster compatible MIDI and MPU-401 UART mode commands (Sound Blaster 16 only) Provides communication path between Host and the Advanced Signal Processor (Sound Blaster 16 Advanced Signal Processing only) Provides the Advanced Signal Processor's code downloading (Sound Blaster 16 Advanced Signal Processing only) Provides DAC speaker control Controls various modes of DMA transfer