M32C83T datasheet(121/527 Pages) RENESAS

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Page 98

10. Interrupts

)

(

Exit Priority Register

After Reset

XXXX 00002

Address

009F16

Symbol

RLVL

RLVL0

RLVL1

RLVL2

Stop/Wait Mode Exit

Minimum Interrupt Priority

Level Control Bit(1)

FSIT

High-Speed Interrupt

Set Bit(2)

0: Interrupt priority level 7 is used

for normal interrupt

1: Interrupt priority level 7 is used

for high-speed interrupt

DMA II

(b4)

(b7 - b6)

DMAC II Select Bit(4)

0: Interrupt priority level 7 is used

for interrupt

1: Interrupt priority level 7 is used

for DMAC II transfer(3)

Nothing is assigned. When write, set to "0".

When read, its content is indeterminate.

Nothing is assigned. When write, set to "0".

When read, its content is indeterminate.

0 0 0 : Level 0

0 0 1 : Level 1

0 1 0 : Level 2

0 1 1 : Level 3

1 0 0 : Level 4

1 0 1 : Level 5

1 1 0 : Level 6

1 1 1 : Level 7

b2 b1 b0

Bit Name

Function

Bit

Symbol

NOTES:

1. The microcomputer exits stop or wait mode when the requested interrupt priority level is higher than

the level set in the RLVL2 to RLVL0 bits. Set the RLVL2 to RLVL0 bits to the same value as IPL in

the FLG register.

2. When the FSIT bit is set to "1", interrupt priority level 7 becomes the high-speed interrupt. In this

case, set only one interrupt to interrupt priority level 7 and the DMA II bit to "0".

3. Set the ILVL2 to ILVL0 bits in the interrupt control register after setting the DMAII bit to "1". Do not

change the DMAII bit setting to "0" after setting the DMAII bit to "1". Set the FSIT bit to "0" when the

DMAII bit to "1".

4. After reset, the DMA II bit is indeterminate. When using an interrupt, set the interrupt control register

after setting the DMA II bit to "0".

Figure 10.5 RLVL Register

10.6.2.3 RLVL2 to RLVL0 Bits

When using an interrupt to exit stop or wait mode, refer to 8.5.2 Wait Mode and 8.5.3 Stop Mode for

details.

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