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3.3.3 Serial Port Select Jumpers (JP3,JP4)
3
3.3.3 Serial Port Select Jumpers (JP3,JP4)
By setting the JP3 and JP4, the serial port of SH7125 connected to the serial port connector (J2) can be selected.
Figure 3.3.4 shows the Serial port select jumper assignment.
Table 3.3.3 and Table 3.3.4 list the jumper setting for selecting Serial port (JP3, JP4).
Top view of the
component side
Board
edge
Board
edge
1
3
JP3 TxD SEL
JP4 RxD SEL
1
3
Figure 3.3.4 Serial Port Select Jumper (JP3, JP4) Assignment
Table 3.3.3 Jumper Setting for Selecting Serial Port (JP3)
Jumper Setting Function
1 - 2
The
PE2/TIOC0C/TXD0
pin of SH7125 is connected with serial port connector
(J2).
JP3
TXD1 SEL
2 - 3 The PA4/TMS/TXD1 pin of SH7125 is connected with serial port connector (J2).
: Initial Setting
Table 3.3.4 Jumper Setting for Selecting Serial Port (JP4)
Jumper Setting Function
1 - 2
The
PE1/TIOC0B/RXD0
pin of SH7125 is connected with serial port connector
(J2).
JP4
RXD1 SEL
2 - 3 The PA3/TRST/RXD1 pin of SH7125 is connected with serial port connector
(J2).
: Initial Setting
Note : Do not change jumper settings while the operation of M3A-HS25. Ensure to turn off the power for the
M3A-HS25 before changing jumper settings.
Rev.1.0 July 21, 2006 3-15
REJ10J0952-0100