UG-498
ADuCM320 Hardware Reference Manual
Rev. C | Page 60 of 196
REGISTER SUMMARY: RESET
Table 66. Reset Register Summary
Address
Name
Description
Reset
RW
0x40002408
RSTCFG
Reset configuration
0x0000
RW
0x4000240C
RSTKEY
Key protection for RSTCFG
0x0000
RW
0x40002440
RSTSTA
Reset status
0x0000
RW
0x40082C34
LVRST
LV die reset configuration
0x0000
RW
REGISTER DETAILS: RESET
Reset Status Register
Address: 0x40002440, Reset: 0x0000, Name: RSTSTA
Table 67. Bit Descriptions for RSTSTA
Bits
Bit Name
Description
Reset
Access
[15:4]
RESERVED
0x0
R
3
SWRST
Software reset. Software reset. Set automatically to 1 when the Cortex-M3
system reset is generated. Cleared by writing 1 to the bit.
0x0
RW1C
2
WDRST
Watchdog timeout. Set automatically to 1 when a watchdog timeout occurs.
Cleared by writing 1 to the bit.
0x0
RW1C
1
EXTRST
External reset. Set automatically to 1 when an external reset occurs.
Cleared by writing 1 to the bit.
0x0
RW1C
0
POR
Power-on reset. Set automatically when a power-on reset occurs. Cleared
by writing 1 to the bit.
0x0
RW1C
Reset Configuration Register
Address: 0x40002408, Reset: 0x0000, Name: RSTCFG
Table 68. Bit Descriptions for RSTCFG
Bits
Bit Name
Description
Reset
Access
0
GPIO_PLA_RETAIN
GPIO/PLA retain their status after WDT and software reset.
0x0
RW
1: GPIO/PLA do not retain status after watchdog or software reset.
0: GPIO/PLA retain status after watchdog or software reset.
Key Protection for RSTCFG Register
Address: 0x4000240C, Reset: 0x0000, Name: RSTKEY
Table 69. Bit Descriptions for RSTKEY
Bits
Bit Name
Description
Reset
Access
[15:0]
RSTKEY
Reset configuration key register. The RSTCFG register is key-protected. Two
writes to the key are necessary to change the value in the RSTCFG register:
first 0x2009, then 0x0426. The RSTCFG register should then be written. A
write to any other register on the APB bus before writing to RSTCFG returns
the protection to the lock state.
0x0
RW
LV Die Reset Configuration Register
Address: 0x40082C34, Reset: 0x0000, Name: LVRST
Table 70. Bit Descriptions for LVRST
Bits
Bit Name
Description
Reset
Access
[15:1]
RESERVED
Reserved.
0x0
R
0
RETAIN
LV retains status after WDT and software reset.
0x0
RW
0: LV die retains status after watchdog or software reset.
1: LV die does not retain status after watchdog or software reset.