SYSCR2 controls the functions of port 6 and the functions of some pins in port 9.
SYSCR2 is initialized to H'80 by a reset and in the hardware standby mode. It is not initialized in
the software standby mode.
Bit 7—Reserved:
This bit cannot be modified and is always read as 1.
Bit 6—Interrupt Request 5 Enable (IRQ
5
E):
Selects the function of pin P6
3
.
Bit 6
IRQ
5
E
0
Description
P6
3
functions as an input/output pin (but as the PW3 output pin
if P6PWME and the OE bit of PWM timer 3 are both set to 1).
P6
3
is the IRQ
5
input pin regardless of the value of P6
3
DDR (although the logic level
of the pin can still be read).
(Initial value)
1
Bit 5—Interrupt Request 4 Enable (IRQ
4
E):
Selects the function of pin P6
2
.
Bit 5
IRQ
4
E
0
Description
P6
2
functions as an input/output pin (but as the PW2 output
pin if P6PWME and the OE bit of PWM timer 2 are both set to 1).
P6
2
is the IRQ
4
input pin regardless of the value of P6
2
DDR (although the logic level
of the pin can still be read).
(Initial value)
1
Bit 4—Interrupt Request 3 Enable (IRQ
3
E):
Selects the function of pin P6
1
.
Bit 4
IRQ
3
E
0
Description
P6
1
functions as an input/output pin (but as the PW1 output
pin if P6PWME and the OE bit of PWM timer 1 are both set to 1).
P6
1
is the IRQ
3
input pin regardless of the value of P6
1
DDR (although the logic level
of the pin can still be read).
(Initial value)
1
Bit 3—Interrupt Request 2 Enable (IRQ
2
E):
Selects the function of pin P6
0
.
Bit 3
IRQ
2
E
0
1
Description
P6
0
functions as an input/output pin.
P6
0
is the IRQ
2
input pin regardless of the value of P6
0
DDR (although the logic level
of the pin can still be read).
(Initial value)
168