品牌：MDS
Momentum Data Systems EQ1 development platform is
intended for developers needing a general purpose hardware
environment for developing systems using Texas Instruments
Performance Audio Framework (PA/F).
Input can be either from 12 ADCs, from SPDIF, or from HDMI
(up to 8 channels of PCM audio).
Three 456 MHz DA8xx processors are provided. All inputs
connect to a DA830 device, which includes an ARM core
running Linux. The output of the DA830 is connected to two
DA808 DSPs in parallel. 12 audio channels (6 I2S data lines)
are passed between the processors. Each DA808 is connected
to 12 DACs to provide a total of 24 outputs. More outputs
than inputs are provided for cases where electronic
crossovers or multispeaker sound field synthesis type
algorithms need to be developed; these type of algorithms
have more outputs than inputs.Host features
The DA830 is intended to run Linux on the ARM processor.
Software to control program loading into the DA830’s DSPs is
included, The two DA808 devices normally boot from SPI
flash, which can be reprogrammed from the ARM/Linux host.
The DA830 provides two serial ports and an ethernet
connection for development. A 5 pin header provides access
to the DA830’s USB ports and can be connected to a PC bulkhead
style USB jack (not included).
HDMI input/output
MDS’ HSR-1 HDMI/HDCP repeater card is included in the
system so that audio can be fed to the system directly from
digital audio sources. PCM data is supported for direct
processing, 2 to 8 channels, at up to 192 kHz sample rate. Any
valid compressed audio bitstream (excluding DSD) can be
handled with appropriate decoder software running on the
The EQ1 is intended for developers that are familiar with TI’s
PA/F and have a specific need to develop software with it.
The user should be familiar with the use of TI’s CCS and PA/F
SDK on the DA830 EVM before using this platform.
The system is provided with a basic audio pass-through
example that is built and run using PA/F.
The software supplied by MDS includes the AvCtrlLib
software running on the DA830 ARM (Linux) core. This
library wraps the low level Alpha Messaging Protocol used
by PA/F. It also provides a control path to DSP 2/3 via I2C. The
example program also support audio extraction from the
HDMI card.
