Peripheral interrupt control registers – Samsung S3C8275X User Manual

Page 125

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INTERRUPT STRUCTURE

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X

5-8

PERIPHERAL INTERRUPT CONTROL REGISTERS

For each interrupt source there is one or more corresponding peripheral control registers that let you control the
interrupt generated by the related peripheral (see Table 5-3).

Table 5-3. Interrupt Source Control and Data Registers

Interrupt Source

Interrupt Level

Register(s)

Location(s) in Set 1

Timer B match
Timer 1/A match

IRQ0

TBCON, TBDATA, TBCNT
TACON, TADATA, TACNT

E7H, E5H, E3H, bank 1
E6H, E4H, E2H, bank 1

SIO interrupt

IRQ1

SIOCON
SIODATA
SIOPS

E1H, bank 0
E2H, bank 0
E3H, bank 0

Watch timer overflow

IRQ2

WTCON

E1H, bank 1

P0.0 external interrupt

IRQ3

P0CONL
EXTICONL
EXTIPND

E5H, bank 0
F9H, bank 0
F7H, bank 0

P0.1 external interrupt

IRQ4 P0CONL

EXTICONL
EXTIPND

E5H, bank 0
F9H, bank 0
F7H, bank 0

P0.2 external interrupt

IRQ5

P0CONL
EXTICONL
EXTIPND

E5H, bank 0
F9H, bank 0
F7H, bank 0

P1.3 external interrupt

IRQ6

P1CONL
EXTICONL
EXTIPND

E8H, bank 0
F9H, bank 0
F7H, bank 0

P1.7 external interrupt
P1.6 external interrupt
P1.5 external interrupt
P1.4 external interrupt

IRQ7 P1CONH

EXTICONH
EXTIPND

E7H, bank 0
F8H, bank 0
F7H, bank 0

NOTE: If an interrupt is un-mask (Enable interrupt level) in the IMR register, the pending bit and enable bit of the interrupt

should be written after a DI instruction is executed.

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