Nxp Semiconductors LPC2917 ユーザーズマニュアル

LPC2917_19_1

© NXP B.V. 2007. All rights reserved.

The key features of the Reset Generation Unit (RGU) are:

Reset controlled individually per subsystem

Automatic reset stretching and release

Monitor function to trace resets back to source

Register write-protection mechanism to prevent unintentional resets

The RGU controls all internal resets.

Each reset output is defined as a (combination of) reset input sources including the 
external reset input pins and internal power-on reset, see 

. The first five resets 

listed in this table form a sort of cascade to provide the multiple levels of impact that a 
reset may have. The combined input sources are logically OR-ed together so that 
activating any of the listed reset sources causes the output to go active.

 

POR_RST

power-on reset module

LP_OSC; is source for RGU_RST

RGU_RST

POR_RST, RSTN pin

RGU internal; is source for PCR_RST

PCR_RST

RGU_RST, WATCHDOG

PCR internal; is source for COLD_RST 

COLD_RST

PCR_RST

parts with COLD_RST as reset source below 

WARM_RST

COLD_RST

parts with WARM_RST as reset source below 

SCU_RST

COLD_RST

SCU

CFID_RST

COLD_RST

CFID

FMC_RST

COLD_RST

embedded Flash-Memory Controller (FMC)

EMC_RST

COLD_RST

embedded SRAM-Memory Controller 

SMC_RST

COLD_RST

external Static-Memory Controller (SMC)

GESS_A2V_RST

WARM_RST

GeSS AHB-to-VPB bridge

PESS_A2V_RST

WARM_RST

PeSS AHB-to-VPB bridge

GPIO_RST

WARM_RST

all GPIO modules

UART_RST

WARM_RST

all UART modules

TMR_RST

WARM_RST

all Timer modules in PeSS

SPI_RST

WARM_RST

all SPI modules

IVNSS_A2V_RST

WARM_RST

IVNSS AHB-to-VPB bridge

IVNSS_CAN_RST

WARM_RST

all CAN modules including Acceptance filter

IVNSS_LIN_RST

WARM_RST

all LIN modules

MSCSS_A2V_RST

WARM_RST

MSCSS AHB to VPB bridge

MSCSS_PWM_RST

WARM_RST

all PWM modules

MSCSS_ADC_RST

WARM_RST

all ADC modules

MSCSS_TMR_RST

WARM_RST

all Timer modules in MSCSS

VIC_RST

WARM_RST

Vectored Interrupt Controller (VIC)

AHB_RST

WARM_RST

CPU and AHB Multilayer Bus infrastructure