Texas Instruments PCM5142 Evaluation Module PCM5142EVM-U PCM5142EVM-U 데이터 시트
제품 코드
PCM5142EVM-U
SLAS759A – AUGUST 2012 – REVISED SEPTEMBER 2012
Function Descriptions
PCM514x Audio Processing Options
Overview
The PCM514x features a fully-programmable miniDSP core. The algorithms for the miniDSP must be loaded into
the device after power up. The miniDSP has direct access to the digital stereo audio stream, offering the
possibility for advanced DSP algorithms with very low group delay. The miniDSP can run up to 1024 instructions
on every audio sample at a 48kHz sample rate.
the device after power up. The miniDSP has direct access to the digital stereo audio stream, offering the
possibility for advanced DSP algorithms with very low group delay. The miniDSP can run up to 1024 instructions
on every audio sample at a 48kHz sample rate.
The PCM514x family supports two different code sources. ROM based process flow (Program 5 -
of this datasheet) and RAM based process flow (Program 31). In program 31 (RAM
based), different algorithms can be called from ROM - such as EQ, DRC, Zero Crossing volume control etc.
Please see the PurePath Studio Development Environment for more details.
Please see the PurePath Studio Development Environment for more details.
miniDSP Instruction Register
miniDSP instruction registers are only available in PCM514x devices. Page 152-169 registers are 25-bit
instructions for the miniDSP engine. For details see
instructions for the miniDSP engine. For details see
. 7 bits of Instr(32:25) in Base register +0 are
reserved bits. 1 bit of Instr(24) - (LSB) in Base register +0 is MSB bit of 25 bit instruction. These instructions
control miniDSP operation. When the fully programmable miniDSP mode is enabled and DAC channel is
powered up, the read and write access to these registers is disabled.
control miniDSP operation. When the fully programmable miniDSP mode is enabled and DAC channel is
powered up, the read and write access to these registers is disabled.
Software
Software development for the PCM514x is supported through TI's comprehensive PurePath Studio Development
Environment; a powerful, easy-to-use tool designed specifically to simplify software development on the
PCM514x miniDSP audio platform. The Graphical Development Environment consists of a library of common
audio functions that can be dragged-and-dropped into an audio signal flow and graphically connected together.
The DSP code can then be assembled from the graphical signal flow with the click of a mouse.
Environment; a powerful, easy-to-use tool designed specifically to simplify software development on the
PCM514x miniDSP audio platform. The Graphical Development Environment consists of a library of common
audio functions that can be dragged-and-dropped into an audio signal flow and graphically connected together.
The DSP code can then be assembled from the graphical signal flow with the click of a mouse.
Please visit the PCM514x product folder on
to learn more about PurePath Studio and the latest
status on available, ready-to-use DSP algorithms.
Copyright © 2012, Texas Instruments Incorporated
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