ADLINK Technology Inc.
LEC-
iMX6R2 User’s Guide
Page 44
copyright © 2021 ADLINK Technology Inc.
4.4.2
UART
Name
Pin # Description
I/O
Type
I/O
Level
Power
Domain
PU / PD
Comments
SER0_TX
P129 Asynchronous serial data output port 0
O
CMOS
1.8V
Runtime
SER0_RX
P130 Asynchronous serial data input port 0
I
CMOS
1.8V
Runtime
SER0_RTS# P131 "Request to Send" handshake line for
port 0
O
CMOS
1.8V
Runtime
SER0_CTS# P132 "Clear to Send" handshake line for port 0
I
CMOS
1.8V
Runtime
SER1_TX
P134 Asynchronous serial data output port 1
O
CMOS
1.8V
Runtime
SER1_RX
P135 Asynchronous serial data input port 1
I
CMOS
1.8V
Runtime
SER2_TX
P136 Asynchronous serial data output port 2
O
CMOS
1.8V
Runtime
SER2_RX
P137 Asynchronous serial data input port 2
I
CMOS
1.8V
Runtime
SER2_RTS# P138 "Request to Send" handshake line for
port 2
O
CMOS
1.8V
Runtime
SER2_CTS# P139 "Clear to Send" handshake line for port 2
I
CMOS
1.8V
Runtime
SER3_TX
P140 Asynchronous serial data output port 3
O
CMOS
1.8V
Runtime
SER3_RX
P141 Asynchronous serial data input port 3
I
CMOS
1.8V
Runtime
Four asynchronous serial ports are supported. The ports are designated SER0
–
SER3. Ports SER0 and SER2 are 4 wire ports, (2 data - and 2 handshake
lines). Ports SER1 and SER3 are 2 wire ports (data only).