Panasonic F77G, MN101C77C user manual SC1TIR, SC1TIE SC1T SC1T LV1 LV0

Models: F77G MN101C77C

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Chapter 3 Interrupts

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".

 

7

6

5

4

3

2

1

0

 

 

SC1TICR

SC1T

SC1T

-

-

-

-

SC1TIE SC1TIR

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

LV1

LV0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SC1TIR

Serial interface 1 transmission

 

 

 

 

 

 

 

 

 

interrupt request flag

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

No interrupt request

 

 

 

 

 

 

 

 

 

1

Interrupt request generated

SC1TIE

0

1

SC1T SC1T

LV1 LV0

Serial interface 1 transmission interrupt enable flag

Disable interrupt

Enable interrupt

Serial interface 1 transmission interrupt level flag

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

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

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

Control Registers

III - 33

Page 127
Image 127
Panasonic F77G, MN101C77C user manual SC1TIR, SC1TIE SC1T SC1T LV1 LV0