ST92141 datasheet(60/179 Pages) STMICROELECTRONICS

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ST92141 - INTERRUPTS

WAKE-UP / INTERRUPT LINES MANAGEMENT UNIT (Cont’d)

WAKE-UP MASK REGISTER HIGH (WUMRH)

R250 - Read/Write

Reset Value: 0000 0000 (00h)

Bit 7:0 = WUM[15:8]:

Wake-Up Mask bits.

If WUMx is set, an interrupt on channel INTD1

and/or a wake-up event (depending on ID1S and

WKUP-INT bits) are generated if the correspond-

ing WUPx pending bit is set. More precisely, if

WUMx=1 and WUPx=1 then:

– If ID1S=1 and WKUP-INT=1 then an interrupt on

channel INTD1 and a wake-up event are gener-

ated.

– If ID1S=1 and WKUP-INT=0 only an interrupt on

channel INTD1 is generated.

– If ID1S=0 and WKUP-INT=1 only a wake-up

event is generated.

– If ID1S=0 and WKUP-INT=0 neither interrupts

on channel INTD1 nor wake-up events are gen-

erated. Interrupt requests on channel INTD1 may

be generated only from external interrupt source

INT7.

If WUMx is reset, no wake-up events can be gen-

erated. Interrupt requests on channel INTD1 may

be generated only from external interrupt source

INT7 (resetting ID1S bit to 0).

WAKE-UP MASK REGISTER LOW (WUMRL)

R251 - Read/Write

Reset Value: 0000 0000 (00h)

Bit 7:0 = WUM[7:0]:

Wake-Up Mask bits.

If WUMx is set, an interrupt on channel INTD1

and/or a wake-up event (depending on ID1S and

WKUP-INT bits) are generated if the correspond-

ing WUPx pending bit is set. More precisely, if

WUMx=1 and WUPx=1 then:

– If ID1S=1 and WKUP-INT=1 then an interrupt on

channel INTD1 and a wake-up event are gener-

ated.

– If ID1S=1 and WKUP-INT=0 only an interrupt on

channel INTD1 is generated.

– If ID1S=0 and WKUP-INT=1 only a wake-up

event is generated.

– If ID1S=0 and WKUP-INT=0 neither interrupts

on channel INTD1 nor wake-up events are gen-

erated. Interrupt requests on channel INTD1 may

be generated only from external interrupt source

INT7.

If WUMx is reset, no wake-up events can be gen-

erated. Interrupt requests on channel INTD1 may

be generated only from external interrupt source

INT7 (resetting ID1S bit to 0).

WUM15 WUM14 WUM13 WUM12 WUM11 WUM10 WUM9

WUM8

WUM7

WUM6

WUM5

WUM4

WUM3

WUM2

WUM1

WUM0

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