mm912f634 Freescale Semiconductor, Inc, mm912f634 Datasheet - Page 66

• Manufacturer Part Number: mm912f634
• Description: Mm912f634 - Integrated S12 Based Relay Driver With Lin
• Manufacturer: Freescale Semiconductor, Inc

Functional Description and Application Information
4.6
Interrupts are used to signal a microcontroller that a peripheral needs to be serviced. While in Stop mode, the interrupt signal is
used to signal Wake-up events. The interrupts are signaled by an active high level of the D2DINT pin, which will remain high until
the interrupt is acknowledged via the D2D-Interface. Interrupts are only asserted while in Normal mode.
4.6.1
Once an Interrupt is signalized, there are two options to identify the corresponding source(s).
4.6.1.1
All Interrupt sources in MM912F634 analog die are mirrored to a special Interrupt Source Register (ISR). This register is read
only and will indicate all currently pending Interrupts. Reading this register will not acknowledge any interrupt. An additional D2D
access is necessary to serve the specific module.
4.6.1.1.1
Table 78. Interrupt Source Register (ISR)
Freescale Semiconductor
Note:
Offset
63.
W
R
(63)
Offset related to 0x0200 for blocking access and 0x300 for non blocking access within the global address space.
0x00 (0x00 and 0x01 for 8Bit access)
Interrupts
15
0
Interrupt Source Identification
Interrupt Source Mirror
The VSI - Voltage Status Interrupt combines the five status flags for the Low Battery
Interrupt, Low Voltage Interrupt, High Voltage Interrupt, Voltage Regulator Over-voltage
Interrupt, and the Voltage Regulator High Temperature Interrupt. The specific source can be
identified by reading the Voltage Status Register - VSR.
Interrupt Source Register (ISR)
14
0
HOT
13
LSOT HSOT LINOT
12
11
10
SCI
9
NOTE
RX
8
TX
7
ERR
6
TOV
5
CH3
4
CH2
3
CH1
2
Access: User read
CH0
MM912F634
1
Interrupts
VSI
0
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