Panasonic F77G, MN101C77C user manual ATC1IR, ATC1IE

Models: F77G MN101C77C

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Chapter 3 Interrupts

ATC 1 Interrupt Control Register (ATC1ICR)

The ATC 1 interrupt control register (ATC1ICR) controls interrupt level of ATC 1 interrupt, interrupt enable flag and interrupt request. Interrupt control register should be operated when the maskable inter- rupt enable flag (MIE) of PSW is "0".

ATC1ICR

7

6

5

4

3

2

1

0

 

ATC1

ATC1

-

-

-

-

ATC1IE

ATC1IR

 

LV1

LV0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(At reset : 0 0 - - - - 0 0)

ATC1IR

Interrupt request flag

 

 

0No interrupt request

1Interrupt request generated

ATC1IE

Interrupt enable flag

0Disable interrupt

1Enable interrupt

ATC1

ATC1

Interrupt level flag

LV1

LV0

 

 

 

 

The CPU has interrupt levels from 0 to 3. These flags set the interrupt level for interrupt requests.

Figure 3-2-26 ATC1 Interrupt Control Register (ATC1ICR : x'03FFC', R/W)

Control Registers

III - 37

Page 131
Image 131
Panasonic F77G, MN101C77C user manual ATC1IR, ATC1IE