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SPRUI97A – May 2017
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AM571x Industrial Development Kit (IDK) Evaluation Module (EVM)
Hardware
8
PCIe
The AM571x processors contain two lanes of peripheral component interconnect express (PCIe). These
can be implemented either as a single, dual-lane port or as two single-lane ports. The PCIe peripheral can
be configured to either be a Root Complex (master) or an Endpoint (slave). The AM571x IDK EVM
implements a single dual-lane port as a Root Complex. The AM571x IDK EVM terminates this dual-lane
port in a ×4 PCIe female connector that accepts standard PCIe Endpoint cards.
A 2-pin header, J49, is available to provide the 3V3_AUX power separate from the primary 3V3 supply.
This is needed for some cards and PCIe driver configurations. The shunt, shown on the schematic as M1,
should be installed when the board is received since 3V3_AUX will be needed in most cases. Please refer
to the documentation for the card being installed to determine whether this shunt should remain installed.
The PERSTn reset for the connector is driven low coincident with the PORz reset to the AM5718
processor. The PERSTn reset to the connector can also be driven low by a GPIO signal from the
processor. This reset can also be blocked by a GPIO signal from the processor.
A 100-MHz clock is provided separately to both the PCIe peripheral and to the PCIe connector. These
clocks are buffered outputs from the same low-jitter source.
The AM571x IDK EVM is compatible with standard PCIe plug-in cards but not fully compliant with the
PCIe CEM standard. It does not support hot-plug and also does not provide sufficient current on the 3.3V
and 12V pins for all plug-in cards. It is currently limited to about 0.5A on each supply.
9
Video Input and Output
The AM571x processor family supports industrial video capture and display in addition to its industrial
communications capabilities. The AM571x 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 AM571x 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 AM5718 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 AM571x IDK EVM supports an HDMI connector driven from the HDMI port on the AM5718 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 AM571x 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 AM5718 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.
The LCD output functionality is available only when the AM571x IDK EVM is configured for the 4-port
Ethernet mode. When the AM571x IDK EVM is configured for the 6-port Ethernet mode, the LCD output is
no longer available since the same pins on the AM5718 device are used for both functions.
NOTE:
Installing a shunt on header J51 that shorts these pins together enables 4-port Ethernet
mode. Removing the shunt from these pins enables 6-port Ethernet mode.
