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I/O Circuit and Electrical Characteristics
The following illustration shows a simplified diagram of the I/O
circuitry with the signal names dependent on the mode used.
Output
Input
Output
Output
Input
Input
Input
Input
RTS
DTR
CTS
DSR
DCD
RI
TXD
RXD
Output
Input
Output
Output
Input
Input
Input
RTS
CTS
TXD
RXD
RTS
TXD
Output
CTS
RXD
RS232 mode
RS422 mode
I/O circuit
Serial communication is performed by a Texas Instruments
TL16C550C single UART (Universal Asynchronous Receiver
Transmitter). Complete modem control capability is included. The
channels are RS232/RS422 compatible. For specifications refer to the
TL16C550C data sheet (available at http://www.ti.com).
The electrical characteristics (signal levels, driver currents etc.) of the
serial interface comply with the published electrical specifications for
RS232 and RS422. In addition, the board has the following
characteristics:
Parameter
Value
Baud rate
n
Up to 115.2 kBd (RS232)
n
Up to 1 MBd (RS422)
Power-up default
The UART is reset.
Electrical characteristics
s
Signal Connection to External Devices
t
188
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DS1103 Hardware Installation and Configuration November 2014
Summary of Contents for DS1103
Page 10: ...s Contents t 10 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 28: ...s Before You Start t 28 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 52: ...s Installing the Hardware t 52 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 160: ...s Mapping of I O Signals t 160 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 218: ...s Troubleshooting t 218 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 219: ...Data Sheets DS1103 Hardware Installation and Configuration November 2014 219 t ...
Page 226: ...s Data Sheets t 226 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 302: ...s Index t 302 s DS1103 Hardware Installation and Configuration November 2014 ...