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9
Video Input and Output
The AM572x processor family supports industrial video capture and display in addition to its industrial
communications capabilities. The AM572x IDK EVM contains a camera header for attaching a module
containing a camera sensor as well as support for an LCD panel display and HDMI video output.
9.1
Camera
The AM572x IDK EVM supports a camera daughterboard that attaches to a 24-pin (2 × 24) header, J9.
The custom-designed camera module from TI, previously designed for the AM437x IDK EVM, mounts on
this header. This header is connected to VIN4B on the AM5728 processor.
The 2Mp camera board contains the Darling Industrial camera module (part number DC-OVBD420AH).
The camera module contains the OmniVision OV2659 camera sensor. Please contact Omnivision for the
latest documentation on this sensor.
9.2
HDMI
The AM572x IDK EVM supports an HDMI connector driven from the HDMI port on the AM5728 processor.
The connector on the board, J24, is an HDMI Standard A-type connector. It is implemented with the
TPD12S016 HDMI companion chip. This companion chip provides I2C level shifting buffers, 5V load
switch, and multi-channel ESD protection.
9.3
LCD
The AM572x IDK EVM is available with an optional LCD panel that also has a capacitive touch overlay.
The video output driven for the LCD panel from the AM5728 processor is on VOUT1. A MIPI bridge device
from Toshiba, TC358778, is implemented to convert from the 24-bit RGB presented on the VOUT1 pins to
serial MIPI RGB streams. The LCD panel is shipped with FPC cables that plug into J16 for the MIPI video
and into J17 for the touchscreen controller. Both the MIPI bridge device and the touchscreen controller are
connected to the IND_I2C chain from processor port I2C1.
10
Industrial Interfaces
There are additional industrial interfaces implemented on the AM572x IDK EVM to help showcase the
flexibility of the AM57xx line of processors.
10.1 Profibus
A compliant Profibus interface is implemented using the ISO1176T isolation device, transformer and
TPS76650 LDO regulator. This circuit terminates to a DB9F connector, J14. This Profibus interface is
driven by UART0 from the first PRU-ICSS block, PR1.
10.2 DCAN
The AM5728 processor contains two Controller Area Network (DCAN) interfaces. DCAN port 1 is routed
out to the ISO1050 isolation device and then to the 5-pin header, J38. The R1Z-3.305HP isolated DC-DC
supply provides an isolated 3.3V supply for this DCAN interface.
10.3 RS-485
The AM572x IDK EVM contains an RS-485 interface on 3-pin header, J39. This is enabled by the
SN65HVD78D Half-Duplex RS-485 Transceiver. The transceiver controls the half-duplex communication
and also provides high-voltage transient protection. This interface is attached to the SOC-level UART2
port for RX and TX data. The UART TX data line is monitored by PR2_PRU1, so that PRU code can
monitor TX activity and then control the DE and REn lines into the transceiver.
SPRUI64E – May 2017 – Revised September 2019
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AM572x Industrial Development Kit (IDK) Evaluation Module (EVM)
Copyright © 2017–2019, Texas Instruments Incorporated
Video Input and Output
21
Hardware
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