Motorola DSP56012 - Manual (Page 23)

Overview
Introduction
MOTOROLA DSP56012 User’s Manual 1-3
1.1 INTRODUCTION
This manual describes in detail the DSP56012 24-bit Digital Signal Processor (DSP),
its memory, operating modes, and peripheral modules. This manual is intended to be
used with the
DSP56000 Family Manual (DSP56KFAMUM/AD) and the DSP56012
Technical Data sheet (DSP56012/D). The family manual describes the Central
Processing Unit (CPU), programming models, and the instruction set. The data sheet
provides electrical specifications, timing, pinouts, and packaging descriptions. These
documents, as well as Motorola’s DSP development tools, can be obtained through a
local Motorola Semiconductor Sales Office or authorized distributor.
To receive the latest information, access the Motorola DSP home page located at
http://www.motorola-dsp.com
The DSP56012 is a high-performance programmable DSP specifically developed for
Digital Versatile Disk (DVD), High-Definition Television (HDTV), and advanced
set-top audio decoding. Flexible peripheral modules and interface software allow
simple connection to a wide variety of video and audio system decoders. The
memory configuration and peripherals differentiate this DSP from the other 56000
family members. The DSP56012 also provides the following on-chip peripherals to
support its target applications:
• Parallel Host Interface (HI)— a byte-wide parallel port with Direct Memory
Access (DMA) support
• Serial Host Interface (SHI) —simple communications and control interface
between a host processor and the DSP
• Serial Audio Interface (SAI) —user-programmable interface that provides
support for a wide variety of serial audio formats to support a number of
standard audio devices
• Dedicated General Purpose Input/Output (GPIO) Signals —eight additional
individually controlled input or output signals
• Digital Audio Transmitter (DAX) —outputs digital audio data in AES/EBU,
CP-340, and IEC958 formats
The DSP56012 has the power and ease-of-programming required for stand-alone,
embedded applications. The versatile, on-board peripherals allow the DSP to be
connected easily to almost any other processor with little or no additional logic.