Symphony SoundBite Reference Manual, Rev. 2.0
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Freescale Semiconductor
Introduction
1
Introduction
The Symphony SoundBite is a versatile audio application development board built upon the DSPB56371
Digital Signal Processor. The Symphony SoundBite costs very little and is ideal for cost-sensitive
organizations, like university digital signal processing labs, small engineering companies, and even the
frugal hobbyist.
Capable of simultaneously processing 8
independent or 4 stereo pairs of audio
input and output, the Symphony
SoundBite has 4 stereo input and output
jacks to connect to line-level analog
audio. One pair of input and output jacks
is shared with an optical S/PDIF receiver
and transmitter, enabling direct digital
audio input and output (mini TOS-link).
Four 24-bit stereo codecs handle analog
conversion at sampling rates up to 192
kHz. You can also interact with
application code running on the DSP,
using DIP switches and multi-colored
LEDs (connected to GPIO pins).
The board includes an integral,
multi-mode communication and
debugging interface that enables low
level JTAG debugging, in addition to
high-level serial communications with the DSP via SPI or I
2
C.
Features:
•
Main Processor: 24-bit DSPB56371 Digital Signal Processor
— up to 180 million instructions per second (MIPS) at 180 MHz core clock
— 1.25 V core supply with 3.3 V peripheral I/O supply
— Dual-Harvard architecture core (two data memory spaces in addition to program space)
— On-chip memories:
– 4–44K x 24-bit words of PRAM
– 28–36K x 24-bit words of XRAM
– 16–48K x 24-bit words of YRAM
– User-configurable memory partitions
— Two Enhanced Serial Audio Interfaces (ESAIs) provide up to 8 channels of digital audio input
and output
— Serial Host Interface (SHI) provides interface for high level serial communication
— Triple timer module
— Serial I
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C boot EEPROM allows for fully stand-alone operation of Symphony SoundBite
Figure 1. Symphony SoundBite Audio Demo Board
