UM10503
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User manual
Rev. 1.3 — 6 July 2012
162 of 1269
NXP Semiconductors
UM10503
Chapter 13: LPC43xx Reset Generation Unit (RGU)
13.4.2 RGU reset status register
The reset status register shows which source (if any) caused the last reset activation per
individual reset output of the RGU. When one (or more) inputs of the RGU caused the
Reset Output to go active (indicated by value 01), the corresponding
RESET_EXT_STATUS register can be read, see
The RESET_STATUS registers are cleared by writing 0 to each of the status bits.
Table 116. Reset status register 0 (RESET_STATUS0, address 0x4005 3110) bit description
Bit
Symbol
Description
Reset
value
Access
1:0
CORE_RST
Status of the CORE_RST reset generator output
00 = No reset activated
01 = Reset output activated by input to the reset generator
10 = Reserved
11 = Reset output activated by software write to RESET_CTRL register
00
R/W
3:2
PERIPH_RST
Status of the PERIPH_RST reset generator output
00 = No reset activated
01 = Reset output activated by input to the reset generator - this reset is
self-clearing
10 = Reserved
11 = Reset output activated by software write to RESET_CTRL register
00
R/W
5:4
MASTER_RST
Status of the MASTER_RST reset generator output
00 = No reset activated
01 = Reset output activated by input to the reset generator - this reset is
self-clearing
10 = Reserved
11 = Reset output activated by software write to RESET_CTRL register
01
R/W
7:6
-
Reserved
01
9:8
WWDT_RST
Status of the WWDT_RST reset generator output
00 = No reset activated
01 = Reset output activated by input to the reset generator
10 = Reserved
11 = Reserved
00
R/W
11:10
CREG_RST
Status of the CREG_RST reset generator output
00 = No reset activated
01 = Reset output activated by input to the reset generator
10 = Reserved
11 = Reserved
00
R/W
13:12
-
Reserved
01
-
15:14
-
Reserved
01
-
17:16
BUS_RST
Status of the BUS_RST reset generator output
00 = No reset activated
01 = Reset output activated by input to the reset generator
10 = Reserved
11 = Reset output activated by software write to RESET_CTRL register
01
R/W