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LPC2921 Datasheet(PDF) 48 Page - NXP Semiconductors |
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LPC2921 Datasheet(HTML) 48 Page - NXP Semiconductors |
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48 / 81 page  LPC2921_2923_2925_0 © NXP B.V. 2008. All rights reserved. Preliminary data sheet Rev. 00.01 — 24 October 2008 48 of 81 NXP Semiconductors LPC2921/2923/2925 ARM9 microcontroller with CAN and LIN 6.15.4.2 Pin description The RGU module in the LPC2921/2923/2925 has the following pins. Table 28 shows the RGU pins. 6.15.5 Power Management Unit (PMU) This module enables software to actively control the system’s power consumption by disabling clocks not required in a particular operating mode. Table 27. Reset output configuration Reset output Reset source Parts of the device reset when activated POR_RST power-on reset module LP_OSC; is source for RGU_RST RGU_RST POR_RST, RST_N 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 GESS_A2V_RST WARM_RST GeSS AHB-to-APB bridge PESS_A2V_RST WARM_RST PeSS AHB-to-APB 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-APB 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 APB 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 I2C_RST <tbd> all I2C modules QEI_RST <tbd> Quadrature encoder DMA_RST <tbd> DMA controller USB_RST <tbd> USB controller VIC_RST WARM_RST Vectored Interrupt Controller (VIC) AHB_RST WARM_RST CPU and AHB Bus infrastructure Table 28. RGU pins Symbol Direction Description RST_N IN external reset input, Active LOW; pulled up internally |
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