Interrupt Pin Selection Circuit Control Register (Wicr) - Fujitsu 8FX Hardware Manual

MB95630H Series
13.5.1 Interrupt Pin Selection Circuit Control Register
(WICR)
This register is used to determine which of the available peripheral input pins
should be output to the interrupt circuit and which interrupt pins they should
serve as.
■ Register Configuration
bit 7
Field —
Attribute —
Initial value 0
■ Register Functions
[bit7] Undefined bit
The read value is always "0". Writing a value to this bit has no effect on operation.
[bit6] INT00: INT00 interrupt pin select bit
This bit determines whether to select the INT00 pin as an interrupt input pin.
Writing "0" to this bit deselects the INT00 pin as an interrupt input pin, and the interrupt pin selection circuit
treats the INT00 pin input as being fixed at "0".
Writing "1" to this bit selects the INT00 pin as an interrupt input pin and the circuit passes the INT00 pin
input to INT00 (ch. 0) of the external interrupt circuit. In this case, the input signal to the INT00 pin can
generate an external interrupt if INT00 (ch. 0) operation is enabled in the external interrupt circuit.
bit6
Writing "0"
Writing "1"
[bit5:4] Undefined bits
Their read values are always "0". Writing values to these bits has no effect on operation.
[bit3] EC1: EC1 interrupt pin select bit
This bit determines whether to select the EC1 pin as an interrupt input pin.
Writing "0" to this bit deselects the EC1 pin as an interrupt input pin, and the interrupt pin selection circuit
treats the EC1 pin input as being fixed at "0".
Writing "1" to this bit selects the EC1 pin as an interrupt input pin and the circuit passes the EC1 pin input to
INT00 (ch. 0) of the external interrupt circuit. In this case, the input signal to the EC1 pin can generate an
external interrupt if INT00 (ch. 0) operation is enabled in the external interrupt circuit.
bit3
Writing "0"
Writing "1"
MN702-00009-2v0-E
6 5
INT00 —
R/W —
1 0
Deselects the INT00 pin as an interrupt input pin.
Selects the INT00 pin as an interrupt input pin.
Deselects the EC1 pin as an interrupt input pin.
Selects the EC1 pin as an interrupt input pin.
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER 13 INTERRUPT PIN SELECTION CIRCUIT
4 3
— EC1
— R/W
0 0
Details
Details
13.5 Register
2 1
UI0 UCK0
R/W R/W
0 0
0
TRG1
R/W
0
193