UG-549
ADuCM310 Hardware Reference Manual
Rev. C | Page 66 of 192
REGISTER DETAILS: RESET
Reset Status Register
Address: 0x40002440, Reset: 0x0000, Name: RSTSTA
Table 76. Bit Descriptions for RSTSTA
Bits
Bit Name
Description
Reset
Access
[15:4]
RESERVED
Reserved.
0x0
R
3
SWRST
Software reset.
0x0
W1C
Set automatically to 1 when the Cortex system reset is generated.
Cleared by writing 1 to the bit.
2
WDRST
Watchdog timeout.
0x0
W1C
Set automatically to 1 when a watchdog timeout occurs.
Cleared by writing 1 to the bit.
1
EXTRST
External reset.
0x0
W1C
Set automatically to 1 when an external reset occurs.
Cleared by writing 1 to the bit.
0
POR
Power-on reset.
0x0
W1C
Set automatically when a power-on reset occurs.
Cleared by writing 1 to the bit.
Reset Configuration Register
Address: 0x40002408, Reset: 0x0000, Name: RSTCFG
Table 77. Bit Descriptions for RSTCFG
Bits
Bit Name
Description
Reset
Access
1
HVDIE_RETAIN
High voltage die retain status after watchdog or software reset.
0x0
RW
0: high voltage die cannot retain status after watchdog or software reset.
Ensure that LVRST[0] = 1.
1: high voltage die retain status after watchdog or software reset. Ensure
that LVRST[0] = 0.
0
GPIO_PLA_RETAIN
GPIO/PLA retain their status after watchdog or 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 78. 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 must 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
Low Voltage Die Reset Configuration Register
Address: 0x40082C34, Reset: 0x0000, Name: LVRST
Table 79. Bit Descriptions for LVRST
Bits
Bit Name
Description
Reset
Access
[15:1]
RESERVED
Reserved.
0x0
R
0
RETAIN
Low voltage retains status after watchdog and software reset.
0x0
RW
0: low voltage die retains status after watchdog or software reset.
1: low voltage die does not retain status after watchdog or software reset.
