A x e l H a r d w a r e M a n u a l
v . 1 . 0 . 4
7.6.1
UART1
The following table describes the interface signals:
Pin name
Conn.
Pin
Function
Note
UART1_CTS
J2.45
J3.11
Clear to send
UART1_DCD
J2.53
Data carrier
detected
UART1_DSR
J2.57
Data set ready
UART1_DTR
J2.55
Data terminal
ready
UART1_RI
J2.113 Ring indicator
UART1_RTS
J2.47
J3.13
Request to send
UART1_RX_DATA
J1.52
J3.23
Serial/infrared
data receive
UART1_TX_DATA
J1.48
J3.25
Serial/infrared
data transmit
7.6.2
UART2
The following table describes the interface signals:
Pin name
Conn.
Pin
Function
Notes
UART2_CTS
J2.65
J3.5
J2.56
Clear to send
UART2_RTS
J2.67
J3.1
J2.54
Request to send
UART2_RX_DATA
J2.63
J1.88
J3.19
J2.52
Serial/infrared
data receive
UART2_TX_DATA
J2.59
J1.86
J3.21
J2.58
Serial/infrared
data transmit
April, 2015
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