Configuration Of Dtp/External Interrupt - Fujitsu MB90895 Series Hardware Manual

12.3

Configuration of DTP/External Interrupt

This section lists and details the pins, interrupt factors, and registers in the DTP/
external interrupt.
I Pins of DTP/External Interrupt
The pins used by the DTP/external interrupt serve as general-purpose I/0 ports.
Table 12.3-1 lists the pin functions and the pin setting required for use in the DTP/external interrupt
Table 12.3-1 Pins of DTP/External Interrupt
Pin Name
P44/RX
P24/INT4
P25/INT5
P26/INT6
P27/INT7
I Block Diagram of Pins
Note: For the block diagram of the pins, see CHAPTER 4 I/O PORT.
I List of Registers and Reset Values in DTP/External Interrupt
Figure 12.3-1 List of Registers and Reset Values in DTP/External Interrupt
DTP/external interrupt factor register
(EIRR)
DTP/external interrupt enable register
(ENIR)
Detection level setting register
: upper (ELVR)
Detection level setting register
: lower (ELVR)
× : Undefined
Pin Function
General-purpose I/O port,
CAN reception input
General-purpose I/O ports, DTP
external interrupt inputs
bit
bit
bit
bit
CHAPTER 12 DTP/external interrupt
Pin Settings Required for Use in DTP/
External Interrupt
Set as input port in port direction register
(DDR).
15 14 13 12 11
× × × × ×
7 6 5 4 3
0 0 0 0 0
15 14 13 12 11
0 0 0 0 0
7 6 5 4 3
0 0 0 0 0
10 9 8
× × ×
2 1 0
0 0 0
10 9 8
0 0 0
2 1 0
0 0 0
333