Texas Instruments DRA72 Series, User Manual, Page: 31 / 39

DCAN2
Connector
DCAN2
DCAN2_TX, _RX
Mux
L
A1 B1
B2
GPIO6_[15:14]
SoC
I2C3
I2C3_SCL, _SDA
CBT3257
A1=B1 or A1=B2
Expansion
Connector
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Signal Multiplex Logic
31 SPRUIB9 – December 2016
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DRA72x EVM CPU Board User's Guide
4.8 DCAN2 and I2C3 Selection (Mux L)
Figure 21 is part of the SoC pinmux table for DCAN2. The SoC device supports additional functions not
shown in the table. The functions shown are intended to reflect those supported on the EVM. These
include:
• Digital CAN Bus (DCAN2): TX, RX
• I2C Serial Bus (I2C3): SCL, SDA
Figure 21. SoC Pinmux for DCAN2
Mux L: Selects between the DCAN2 header and expansion interface, as shown in Figure 22 . The
selection is made using the IO expander #2 and bits P3, defaulting to on-board DCAN header.
Figure 22. Mux Diagram for DCAN2 and I2C
5 USB3-Supported Configurations
The following USB3.x combinations are supportable:
• Micro-A plug to standard-b plug
– Connect to hub or external drive or device that has a standard-B receptacle
• Micro-A plug to micro-B plug
– EVM connects to hub or external drive or device that has a micro-B receptacle
– Host connects to the EVM acting as a device
• Standard-A plug to Micro-B plug
– Host connects to the EVM acting as a device