Panasonic MN101C77C User Manual

Page 127

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III - 33

Chapter 3 Interrupts

Control Registers

Serial Interface 1 Transmission Interrupt Control Register (SC1TICR)

The serial Interface 1 transmission interrupt control register (SC1TICR) controls interrupt level of serial

Iinterface 1 transmission interrupt, interrupt enable flag and interrupt request. Interrupt control register

should be operated when the maskable interrupt enable flag (MIE) of PSW is "0".

Figure 3-2-21 Serial Interface 1 Transmission Interrupt Control Register

(SC1TICR : x'03FF7', R/W)

SC1T

LV1

Serial interface 1 transmission
interrupt level flag

SC1T

LV0

0

1

2

4

5

6

7

3

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

0

1

No interrupt request

Serial interface 1 transmission
interrupt request flag

Interrupt request generated

SC1TIE

SC1TIR

0

1

Disable interrupt

Serial interface 1 transmission
interrupt enable flag

Enable interrupt

SC1TIE

SC1TIR

-

-

-

-

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

SC1T

LV0

SC1T

LV1

SC1TICR

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