Rs-232C Interface - Renesas M3A-HS64 User Manual

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2.5 RS-232C Interface

The SH7264 includes a serial communication interface with FIFO (SCIF). D-sub 9-pin connector on the M3A-HS64 is connected to
the SH7264 SCIF channel 0 pin via an RS-232C driver IC.
The SH7264 SCIF channel 0 pin is also used as the channel 0 pin of the Controller Area Network (RCAN-TL1).
The following figure shows the RS-232C interface block diagram. The table below lists the jumpers setting (JP4, and JP5).
SH7264
PJ0/CTx0/IETxD/TxD0
PJ1/CRx0/IERxD/RxD0
Note: Pin names in red
Number
Selects the TxD0 (SCIF) pin - default
JP4
Selects the RxD0 (SCIF) pin - default
JP5
Rev. 1.00 Apr 30, 2009
REJ11J0034-0100
3.3 V
3.3 V
JP4
1
2
3
3.3 V
1
2
3
JP5
RES#
Expansion connector
indicate the function used.
Figure 2.5.1 RS-232C Interface Block Diagram
Table 2.5.1 Jumpers Setting (JP4, and JP5)
1-2
RS-232C driver
TIN TOUT
ROUT RIN
SHDN#
Selects the CTx0 (RCAN-TL1) /IETxD (IEB) pins
Selects the CRx0 (RCAN-TL1) /IERxD (IEB) pins
M3A-HS64 Functions
2.5 RS-232C Interface
D-Sub 9-pin
RS-232C connector
TXD
RXD
DTR#
DSR#
RTS#
CTS#
2-3
2-22