SC9RS08KA2 datasheet(44/134 Pages) FREESCALE

44 / 134 page

Chapter 5 Resets, Interrupts, and General System Control

SC9RS08KA2 Series Data Sheet, Rev. 1

Freescale Semiconductor

5.8.6

System Interrupt Pending Register (SIP1)

This high page register contains status of the pending interrupt from the modules.

Figure 5-7. System Interrupt Pending Register (SIP1)

321

KBI

ACMP

MTIM

RTI

LVD

Reset:

000

= Unimplemented or Reserved

Table 5-9. SIP1 Register Field Descriptions

Field

Description

KBI

Keyboard Interrupt Pending — This read-only bit indicates there is a pending interrupt from the KBI module.

Clearing the KBF flag of the KBISC register clears this bit. Reset also clears this bit.

0 There is no pending KBI interrupt; i.e., KBF flag and/or KBIE bit is cleared.

1 There is a pending KBI interrupt; i.e., KBF flag and KBIE bit are set.

ACMP

Analog Comparator Interrupt Pending — This read-only bit indicates there is a pending interrupt from the

ACMP module. Clearing the ACF flag of the ACMPSC register clears this bit. Reset also clears this bit.

0 There is no pending ACMP interrupt; i.e., ACF flag and/or ACIE bit is cleared.

1 There is a pending a ACMP interrupt; i.e., ACF flag and ACIE bit are set.

MTIM

Modulo Timer Interrupt Pending — This read-only bit indicates there is a pending interrupt from the MTIM

module. Clearing the TOF flag of the MTIMSC register clears this bit. Reset also clears this bit.

0 There is no pending MTIM interrupt; i.e., TOF flag and/or TOIE bit is cleared.

1 There is a pending MTIM interrupt; i.e., TOF flag and TOIE bit are set.

RTI

Real-Time Interrupt Pending — This read-only bit indicates there is a pending interrupt from the RTI. Clearing

the RTIF flag of the SRTISC register clears this bit. Reset also clears this bit.

0 There is no pending RTI interrupt; i.e., RTIF flag and/or RTIE bit is cleared.

1 There is a pending RTI interrupt; i.e., RTIF flag and RTIE bit are set.

LVD

Low-Voltage Detect Interrupt Pending — This read-only bit indicates there is a pending interrupt from the low

voltage detect module. Clearing the LVDF flag of the SPMSC1 register clears this bit. Reset also clears this bit.

0 There is no pending LVD interrupt; i.e., LVDF flag and/or LVDE bit is cleared.

1 There is a pending LVD interrupt; i.e., LVDF flag, LVDIE, and LVDE bits are set.

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