Specifications

M80 Hardware Design
M80_HD_V1.0 - 47 -
TXD
RXD
RTS
CTS
DTR
DCD
RI
TXD
RXD
RTS
CTS
DTR
DCD
RING
Module (DCE)
PC (DTE)
UART portUART Port
GND GND
Figure 18: Connection of all functional UART port
Three lines connection is shown as below.
Host(DTE)
controller
TXD
RXD
GND
Module(DCE)
TXD
RXD
GND
UART PORT
RTS
0R
Figure 19: Connection of three lines UART port
UART Port with hardware flow control is shown as below. This connection will enhance the
reliability of the mass data communication.
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