Renesas M3A-HS64, User Manual

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M3A-HS64G02 Functions
4.13 Interrupt Switches
Rev. 1.00 Apr 30, 2009 4-26
REJ11J0034-0100
4
4.13 Interrupt Switches
The M3A-HS64G02 includes two push-button switches (IRQ2 switch and IRQ3 switch) for the IRQ2, and IRQ3 interrupt signals
input from the SH7264.
Set JP8, and JP9 on the M3A-HS64, JP1, and JP2 on the M3A-HS64G02 to use these switches.
The figure below shows the interrupt switch block diagram. Table 4.13.1 lists the jumpers setting (JP8, and JP9 on the
M3A-HS64). Table 4.13.2 lists the jumpers setting (JP1, and JP2).
SH7264
PE3/SDA1/ IRQ3
SDA
SCL
PE2/SCL1/ IRQ2
3.3 V
3.3 V
JP8
JP9
3.3 V
+
SW1
IRQ2 switch
3.3 V
+
SW2
IRQ3 switch
Expansion
connector
EEPROM
JP1
JP2
2
IIC interface of the D/A converter
2
3
1
2
3
1
Note: Pin names in red indicate the function used.
Figure 4.13.1 Interrupt Switch Block Diagram
Table 4.13.1 Jumper Setting (JP8, and JP9 on the M3A-HS64)
Number
1-2 None (Open)
JP8
IIC3 mode (Sets the PE2 as the SCL1 output pin, default) IRQ mode (Sets the PE2 as the IRQ2 output pin)
JP9
IIC3 mode (Sets the PE3 as the SDA1 output pin, default) IRQ mode (Sets the PE3 as the IRQ3 output pin)
Table 4.13.2 Jumper Setting (JP1, and JP2)
Number
1-2 2-3
JP1
IIC3 mode (Sets the PE2 as the SCL1 output pin) IRQ mode (Sets the PE2 as the IRQ2 input pin, default)
JP2
IIC3 mode (Sets the PE3 as the SDA1 I/O pins) IRQ mode (Sets the PE3 as the IRQ3 input pin, default)