Chapter 3 Interrupts

Serial Interface 0 Reception Interrupt Control Register (SC0RICR)

The serial Interface 0 reception interrupt control register (SC0RICR) controls interrupt level of serial Interface 0 reception interrupt, interrupt enable flag and interrupt request. Interrupt control register should be operated when the maskable interrupt enable flag (MIE) of PSW is "0".

 

7

6

5

4

3

2

1

0

 

 

SC0RICR

SC0R

SC0R

-

-

-

-

SC0RIE SC0RIR

(at reset : 0 0 - - - - 0 0 )

LV1

LV0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SC0RIR

Serial interface 0 reception

 

 

 

 

 

 

 

 

 

interrupt request flag

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

No interrupt request flag

 

 

 

 

 

 

 

 

 

1

Interrupt request generated

SC0RIE

0

1

SC0R SC0R

LV1 LV0

Serial interface 0 reception interrupt enable flag

Disable interrupt

Enable interrupt

Serial interface 0 reception interrupt level flag

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

Figure 3-2-18 Serial Interface 0 Reception Interrupt Control register

(SC0RICR:x'03FF4',R/W)

III- 30 Control Registers

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Image 124
Panasonic MN101C77C, F77G user manual SC0RIR, SC0RIE SC0R SC0R LV1 LV0