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SMARC T335x Carrier Board Hardware Design Guide, Document Revision 1.2
2.8.1. Serial COM Port Signals
The following table shows the
SER0
controller interface signals.
SMARC Edge Finger
I/O
Type
Power
Rail
Description
Pin#
Pin
Name
P129
SER0_TX
O
CMOS
3.3V
Asynchronous serial port data out
P130
SER0_RX
I
CMOS
3.3V
Asynchronous serial port data in
P131
SER0_RTS#
O
CMOS
3.3V
Request to Send handshake line
for SER0
P132
SER0_CTS#
I
CMOS
3.3V
Clear to Send handshake line for
SER0
SER1
interface is defined as follows.
SMARC Edge Finger
I/O
Type
Power
Rail
Description
Pin#
Pin
Name
P134
SER1_TX
O
CMOS
3.3V
Asynchronous serial port data out
P135
SER1_RX
I
CMOS
3.3V
Asynchronous serial port data in
SER2
interface
is not used in
SMARC T335X
.
SMARC Edge Finger
I/O
Type
Power
Rail
Description
Pin#
Pin
Name
P136
SER2_TX
Not Used
P137
SER2_RX
Not Used
P138
SER2_RTS#
Not Used
P139
SER2_CTS#
Not Used