DIO59618A

Version 1.0, Oct 2025

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© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

17

9.5. IRQ interrupt prompt function

The DIO59618A supports IRQ interrupt output. When IRQ open-drain output triggers IRQ event, IRQ will be

pulled down. In this case, as long as one bit is not 0, IRQ will remain pulled down. Only when all registers

read zero will IRQ be pulled up. The MCU can read alarm status registers (e.g. 0x00 to 0x01) to detect the

anomalies.

Table 9. IRQ_0 register

Register

Address Bit R/W/C Default

Symbol

Description

IRQ_0

0x00

Bit7

RC

0

OVER_TEMP

0: Below 120°C

1: Over 120°C

Bit6

RC

0

KEY_INT

0: No KEY signal 1: There is a KEY signal

Bit5

RC

0

CHG_END

0: Higher than

ITERM

1: Less than ITERM

Bit4

RC

0

BAT_LV

0: Higher than

BAT_ULV

1: Lower than BAT_ULV

Bit3

RC

0

VBUS_IN

0: VBUS is

absent or

unnormal

1: A normal VBUS is

connected

Bit2

RC

0

VSYS_OCP

0: VSYS current

is normal

1: VSYS current is over

limit (2.0 A)

Bit1

RC

0

ICC_TIMEOUT

0: ICC time is

less than 2 h

1: ICC time is over 2 h

Bit0

RC

0

ITC_TIMEOUT

0: ITC time is

less than 2 h

1: ITC time is over 2 h

Table 10. IRQ_1 register

Register Address Bit R/W/C Default

Symbol

Description

IRQ_1

0x01

Bit7

RC

0

VOR_OCP

0: VOR current is

normal

1: VOR current is over

limit

Bit6

RC

0

VOL_OCP

0: VOL current is

normal

1: VOL current is over

limit

Bit5

RC

0

VOR_IN

0: Right earphone

is not load-in

1: Right earphone is

load-in

Bit4

RC

0

VOL_IN

0: Left earphone

is not load-in

1: Left earphone is

load-in

Bit3

RC

0

VOR_OUT

0: Right earphone

is not removed

1: Right earphone is

removed

Bit2

RC

0

VOL_OUT

0: Left earphone

is not removed

1: Left earphone is

removed

Bit1

RC

0

VOR_IOFF

0: VOR current is

normal

1: VOR current is less

than IOFF

Bit0

RC

0

VOL_IOFF

0: VOL current is

normal

1: VOL current is less

than IOFF