HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 204

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

Bit 1—External Interrupt Vector Mode Select (EXIMD): This bit selects IRQ mode or IRL mode.
In IRQ mode, each of signals IRL3 to IRL0 functions as a separate interrupt source. In IRL mode,
these signals can specify interrupt priority levels 1 to 15.
Bit 1: EXIMD
0
1
Bit 0—Interrupt Vector Mode Select (VECMD): This bit selects auto-vector mode or external
vector mode for IRL/IRQ interrupt vector number setting. In auto-vector mode, an internally
determined vector number is set. The IRL15 and IRL14 interrupt vector numbers are set to 71 and
the IRL1 vector number is set to 64. In external vector mode, a value between 0 and 127 can be
input as the vector number from the external vector number input pins (D7–D0).
Bit 0: VECMD
0
1
5.3.29
The IRQ control/status register (IRQCSR) is a 16-bit register that sets the IRL0–IRL3 input signal
detection mode, indicates the input signal levels at pins IRL0–IRL3, and also indicates the IRQ
interrupt status. IRQCSR is initialized by a reset. It is not initialized in standby mode.
Note: * Only 0 can be written, to clear the flag (in case of edge detection).
186
Initial value:
Initial value:
IRQ Control/Status Register (IRQCSR)
R/W:
R/W:
Bit:
Bit:
IRQ31S IRQ30S IRQ21S IRQ20S IRQ11S IRQ10S IRQ01S IRQ00S
IRL3PS IRL2PS IRL1PS IRL0PS
R/W
0/1
15
0
7
R
Description
IRL mode
IRQ mode
Description
Auto vector mode, vector number automatically set internally
External vector mode, vector number set by external input
R/W
0/1
14
0
6
R
R/W
0/1
13
0
5
R
R/W
0/1
12
0
4
R
R/(W)*
IRQ3F
R/W
11
0
3
0
R/(W)*
IRQ2F
R/W
10
0
2
0
R/(W)*
IRQ1F
R/W
9
0
1
0
(Initial value)
(Initial value)
R/(W)*
IRQ0F
R/W
8
0
0
0