D i d o H a r d w a r e M a n u a l
v . 1 . 0 . 5
Pin name
Conn.
Pin
Function
Notes
DCAN1_RX
J1.19
Receive data pin
DCAN1_TX
J1.21
Transmit data pin
7.7
UARTs
Three UART ports are routed to DIDO connectors. UART0
provides full Modem Control Signals, while UART3 and UART5
are 4-wire interfaces. Each port can be programmed separately
and can operate in UART, IrDA or CIR modes.
7.7.1
UART0
The following table describes the interface signals:
Pin name
Conn.
Pin
Function
Note
UART0_RXD
J1.7
Receive Data
Functions as IrDA
receive input in IrDA
modes and CIR
receive input in CIR
mode
UART0_TXD
J1.8
Transmit Data
Functions as CIR
transmit in CIR mode
UART0_RTSn
J1.19
Request To Send
Functions as transmit
data output in IrDA
modes
UART0_CTSn
J1.21
Clear To Send
Functions as SD
transceiver control
output in IrDA and
CIR modes
UART0_DTRn
J2.130 Data Terminal
Ready
UART0_DSRn
J2.121 Data Set Ready
UART0_DCDn
J2.128 Data Carrier
Detect
UART0_RIN
J2.123 Ring indicator
August, 2014
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