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SLAS554H – MAY 2009 – REVISED SEPTEMBER 2013
System Module (SYS)
The SYS module handles many of the system functions within the device. These include power on reset and
power up clear handling, NMI source selection and management, reset interrupt vector generators, boot strap
loader entry mechanisms, as well as, configuration management (device descriptors). It also includes a data
exchange mechanism via JTAG called a JTAG mailbox that can be used in the application.
Table 11. System Module Interrupt Vector Registers
INTERRUPT VECTOR REGISTER
ADDRESS
INTERRUPT EVENT
VALUE
PRIORITY
SYSRSTIV, System Reset
019Eh
No interrupt pending
00h
Brownout (BOR)
02h
Highest
RST/NMI (POR)
04h
DoBOR (BOR)
06h
Reserved
08h
Security violation (BOR)
0Ah
SVSL (POR)
0Ch
SVSH (POR)
0Eh
SVML_OVP (POR)
10h
SVMH_OVP (POR)
12h
DoPOR (POR)
14h
WDT timeout (PUC)
16h
WDT password violation (PUC)
18h
KEYV flash password violation (PUC)
1Ah
Reserved
1Ch
Peripheral area fetch (PUC)
1Eh
PMM password violation (PUC)
20h
Reserved
22h to 3Eh
Lowest
SYSSNIV, System NMI
019Ch
No interrupt pending
00h
SVMLIFG
02h
Highest
SVMHIFG
04h
DLYLIFG
06h
DLYHIFG
08h
VMAIFG
0Ah
JMBINIFG
0Ch
JMBOUTIFG
0Eh
VLRLIFG
10h
VLRHIFG
12h
Reserved
14h to 1Eh
Lowest
SYSUNIV, User NMI
019Ah
No interrupt pending
00h
NMIFG
02h
Highest
OFIFG
04h
ACCVIFG
06h
Reserved
08h to 1Eh
Lowest
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