Creative SB0350, Руководство по программированию

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1-4 Hardware Overview
Bus Interface Chip
The Bus Interface Chip (CT1336) is responsible for providing handshake signals and
data transfer between the ISA bus and various components on the Sound Blaster card.
On Sound Blaster 16, it provides MPU-401 UART mode compatible MIDI, FIFOs for
digital audio playback and recording, and interrupt channel sharing by three different
processes (8-bit digitized sound, 16-bit digitized sound and MIDI).
Advanced Signal Processor Chip
The Advanced Signal Processor, used on Sound Blaster 16 Advanced Signal
Processing cards, is a technological breakthrough. It can perform high speed
mathematical processing on digitized sound data. It also provides real-time signal
processing like compression/decompression of sound. The flexibility of the chip is
that it can accept the downloading of algorithms. Below is a simplified block
diagram of this chip:
D S P C o r e
P r o g r a m
R A M
( 5 1 2 x 3 2 )
D a t a
R A M
( 5 1 2 x 1 6 )
Serial
In/Out
Serial
In/Out
Clock
Controller
Clocks
G l u e L o g i c
Host Data
Interface Controller
Interface
AD/DA Data
Interface
Figure 1-1: Block Diagram of the Advanced Signal Processor