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What is in the DLP NIRscan EVM?
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12 DLPU016C – April 2014 – Revised April 2019
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DLP NIRscan Evaluation Module Overview
Figure 1-5. Diamond Pixel for Vertical, Horizontal, and Diagonal Lines
1.2.2 DLP NIRscan EVM Electronics
The DLP NIRscan EVM contains five boards which support all the electrical and software capabilities of
the spectrometer. The five boards are:
• Spectro board : The spectro board is the largest board in the DLP NIRscan EVM. The board provides
the following:
– Sitara processor: The Sitara processor (AM3358) runs a webserver which provides an HTML-based
method of controlling the spectrometer and displaying the results of sample scans. The Sitara
formulates and streams unique wavelength specific patterns to the DLPC350 for display on the
DMD while synchronizing the sampling of the spectrometer's ADC. The Sitara runs a Linux-based
spectrometer application on an open source Linux kernel. The user controls the web pages through
an RNDIS connection over USB, or by IP address over Ethernet connected to the local area
network.
– DLPC350 ASIC: The controller of the DLP4500NIR-based DLP system, the DLPC350 device
receives the pattern data from the Sitara over a 24-bit RGB bus. The DLPC350 decodes the pattern
information and converts the information into the correct format for the DMD. The device controls all
the DMD signals and synchronization, thereby directing each individual mirror to its desired state.
– External interfaces: The spectro boards provide multiple interfaces to the outside world. Standard
interfaces for communicating with the DLP NIRscan EVM are Ethernet-over-USB and a standard
RJ45 ethernet connection. To leverage the DLP NIRscan EVM platform for new product
development using the Sitara processor, the spectro board also contains a Sitara debug port, which
can be used with console software to control and debug the EVM software.
– Internal interfaces: The spectro board is at the center of the spectrometer electronics and software.
All boards plug into the spectro board though either a hard board connector or wiring harness.