AS3524 datasheet(38/124 Pages) AMSCO

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AS3524 C21 / C22

austriamicrosystems

Data Sheet, Confidential

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Revision 1.11

- 124

Raw Interrupt status register, Timer1RIS, Timer2RIS

This register indicates the raw interrupt status from the counter. This value is ANDed with the timer interrupt enable bit from the control register to

create the masked interrupt, which is passed to the interrupt output pin.

Table 17 raw interrupt status register

Name

Base

Default

Timer1RIS, Timer2RIS

AS3525_TIMER_BASE

Timer raw interrupt status register

Offset: 0x10, 0x30

Contains control bits of the PLLA register.

Bit

Bit Name

Default

Access

Bit Description

Raw Timer Interrupt

Raw interrupt status from the counter

Interrupt status register, TIMERXMIS

This register indicates the masked interrupt status from the counter. This value is the logical AND of the raw interrupt status with the timer interrupt

enable bit from the control register, and is the same value which is passed to the interrupt output pin.

Table 18 interrupt status register

Name

Base

Default

Timer1MIS, Timer2MIS

AS3525_TIMER_BASE

Timer raw interrupt status register

Offset: 0x10, 0x30

Contains control bits of the PLLA register.

Bit

Bit Name

Default

Access

Bit Description

Raw Timer Interrupt

Raw interrupt status from the counter

Background load register, TimerXBGLoad

This is a 32 bit register containing the value from which the counter is to decrement. This is the value used to reload the counter when periodic

mode is enabled, and the current count reaches zero.

This register privides an alternative method of accessing the TimerXLoad register. The difference is that writes to TimerXBGLoad will not cause the

counter immediately to restart from the new value.

Reading from this register returns the same value returned from TimerXLoad.

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