MT7697DIN datasheet(52/84 Pages) ETC2

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MT7697D

Internet-of-Things Wireless Connectivity

Page 52 of 84

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2.6.5

CIRQ

N9 subsystem uses the interrupt controller CIRQ to control the source selection, mask, edge/level

sensitivity, and software enabling for internal interrupts, as well as the mask and the edge/level

sensitivity for external interrupts.

CIRQ also integrates the de-bounce circuit for external interrupts.

FIQ control

IRQ contro

Interrupt

select

Control register

External

interrupt

control

De-bounce

Figure 2-22. N9 interrupt controller

2.6.5.1

Interrupt sources

The tables below lists the interrupt sources of internal and external interrupts.

There are totally 23 interrupts and 14 external interrupts.

The power domain/subsystem lists the power domain and the subsystem from which the interrupt is

generated.

IRQ

No.

Interrupt

source

Power domain

/subsystem

External

interrupt

Wake-up

capability

(1)

De-

bounce

Description

INT0

UART

TOP_OFF(N9)/MCUSY

UART/BTIF module

INT1

DMA

TOP_OFF(N9)/MCUSY

Generic DMA in N9 subsystem

INT2

HIFSYS

TOP_AON/HIF

WIFI_HIF(SDIO)

INT3

BT_TIMCON

TOP_AON/BTSYS

Bluetooth TIMCON module

INT4

THERM

TOP_OFF(N9)

Thermometer

INT5

(Reserved)

INT6

WIFI

WF_OFF

Wi-Fi subsystem

INT7

ICAP

TOP_OFF(N9)/MCUSY

Internal capture in RBIST module

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