NXP Semiconductors LPC43 Series User Manual

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NXP Semiconductors LPC43 Series User Manual Manual pdf 162 page image

UM10503 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.User manual Rev. 1.3 — 6 July 2012 162 of 1269NXP Semiconductors UM10503Chapter 13: LPC43xx Reset Generation Unit (RGU)13.4.2 RGU reset status registerThe reset status register shows which source (if any) caused the last reset activation perindividual reset output of the RGU. When one (or more) inputs of the RGU caused theReset Output to go active (indicated by value 01), the correspondingRESET_EXT_STATUS register can be read, see Section 13.4.4.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 descriptionBit Symbol Description ResetvalueAccess1:0 CORE_RST Status of the CORE_RST reset generator output00 = No reset activated01 = Reset output activated by input to the reset generator10 = Reserved11 = Reset output activated by software write to RESET_CTRL register00 R/W3:2 PERIPH_RST Status of the PERIPH_RST reset generator output00 = No reset activated01 = Reset output activated by input to the reset generator - this reset isself-clearing10 = Reserved11 = Reset output activated by software write to RESET_CTRL register00 R/W5:4 MASTER_RST Status of the MASTER_RST reset generator output00 = No reset activated01 = Reset output activated by input to the reset generator - this reset isself-clearing10 = Reserved11 = Reset output activated by software write to RESET_CTRL register01 R/W7:6 - Reserved 019:8 WWDT_RST Status of the WWDT_RST reset generator output00 = No reset activated01 = Reset output activated by input to the reset generator10 = Reserved11 = Reserved00 R/W11:10 CREG_RST Status of the CREG_RST reset generator output00 = No reset activated01 = Reset output activated by input to the reset generator10 = Reserved11 = Reserved00 R/W13:12 - Reserved 01 -15:14 - Reserved 01 -17:16 BUS_RST Status of the BUS_RST reset generator output00 = No reset activated01 = Reset output activated by input to the reset generator10 = Reserved11 = Reset output activated by software write to RESET_CTRL register01 R/W