LPC2925 NXP Semiconductors, LPC2925 Datasheet - Page 48

• Manufacturer Part Number: LPC2925
• Description: (LPC2921 - LPC2925) ARM9 microcontroller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2921_2923_2925_0
Preliminary data sheet
www.DataSheet4U.com
6.15.4.2 Pin description
6.15.5 Power Management Unit (PMU)
Table 27.
The RGU module in the LPC2921/2923/2925 has the following pins.
RGU pins.
Table 28.
This module enables software to actively control the system’s power consumption by
disabling clocks not required in a particular operating mode.
Reset output
POR_RST
RGU_RST
PCR_RST
COLD_RST
WARM_RST
SCU_RST
CFID_RST
FMC_RST
EMC_RST
GESS_A2V_RST
PESS_A2V_RST
GPIO_RST
UART_RST
TMR_RST
SPI_RST
IVNSS_A2V_RST
IVNSS_CAN_RST
IVNSS_LIN_RST
MSCSS_A2V_RST
MSCSS_PWM_RST
MSCSS_ADC_RST
MSCSS_TMR_RST
I2C_RST
QEI_RST
DMA_RST
USB_RST
VIC_RST
AHB_RST
Symbol
RST_N
Reset output configuration
RGU pins
Direction
IN
Rev. 00.01 — 24 October 2008
POR_RST, RST_N pin
RGU_RST, WATCHDOG PCR internal; is source for COLD_RST
PCR_RST
COLD_RST
COLD_RST
COLD_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
WARM_RST
<tbd>
<tbd>
WARM_RST
Reset source
power-on reset module
COLD_RST
COLD_RST
WARM_RST
WARM_RST
<tbd>
<tbd>
WARM_RST
Description
external reset input, Active LOW; pulled up internally
all CAN modules including Acceptance filter
all LIN modules
Quadrature encoder
Parts of the device reset when activated
LP_OSC; is source for RGU_RST
RGU internal; is source for PCR_RST
parts with COLD_RST as reset source below
parts with WARM_RST as reset source below
SCU
CFID
embedded Flash-Memory Controller (FMC)
embedded SRAM-Memory Controller
GeSS AHB-to-APB bridge
PeSS AHB-to-APB bridge
all GPIO modules
all UART modules
all Timer modules in PeSS
all SPI modules
IVNSS AHB-to-APB bridge
MSCSS AHB to APB bridge
all PWM modules
all ADC modules
all Timer modules in MSCSS
all I2C modules
DMA controller
USB controller
Vectored Interrupt Controller (VIC)
CPU and AHB Bus infrastructure
ARM9 microcontroller with CAN and LIN
LPC2921/2923/2925
Table 28
© NXP B.V. 2008. All rights reserved.
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