UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
154 of 1269
NXP Semiconductors
UM10503
Chapter 13: LPC43xx Reset Generation Unit (RGU)
The RGU also monitors the reset cause for each reset output. The reset cause can be
retrieved with two levels of granularity.
The first level is monitored by the RESET_STATUS0 to 3 registers and indicates one of
the following reset causes (see
):
•
No reset has taken place.
•
Reset generated by software (using the registers RESET_CTRL0 and
RESET_CTRL1).
•
Reset generated by any of the reset sources.
SCT_RST
37
PERIPH_RST
State Configurable Timer reset
MOTOCONPWM_RST 38
PERIPH_RST
Motor control PWM reset
QEI_RST
39
PERIPH_RST
QEI reset
ADC0_RST
40
PERIPH_RST
ADC0 reset (ADC register interface and
analog block)
ADC1_RST
41
PERIPH_RST
ADC1 reset (ADC register interface and
analog block)
DAC_RST
42
PERIPH_RST
DAC reset (DAC register interface and
analog block)
Reserved
43
-
-
UART0_RST
44
PERIPH_RST
USART0 reset
UART1_RST
45
PERIPH_RST
UART1 reset
UART2_RST
46
PERIPH_RST
USART2 reset
UART3_RST
47
PERIPH_RST
USART3 reset
I2C0_RST
48
PERIPH_RST
I2C0 reset
I2C1_RST
49
PERIPH_RST
I2C1 reset
SSP0_RST
50
PERIPH_RST
SSP0 reset
SSP1_RST
51
PERIPH_RST
SSP1 reset
I2S_RST
52
PERIPH_RST
I2S0 and I2S1 reset
SPIFI_RST
53
PERIPH_RST
SPIFI reset
CAN1_RST
54
PERIPH_RST
C_CAN1 reset
CAN0_RST
55
PERIPH_RST
C_CAN0 reset
M0APP_RST
56
MASTER_RST
ARM Cortex-M0 co-processor reset.
Remark:
Software must clear the M0
co-processor reset by writing to the
RESET_CTRL1 register.
SGPIO_RST
57
PERIPH_RST
SGPIO reset
SPI_RST
58
PERIPH_RST
SPI reset
Reserved
59 - 63
-
-
Table 111. Reset output configuration
…continued
Reset output
generator
Reset
output
#
Reset source
Parts of the device reset when
activated