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AS3524 Datasheet(PDF) 41 Page - ams AG |
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AS3524 Datasheet(HTML) 41 Page - ams AG |
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41 / 124 page  AS3524 C21 / C22 austriamicrosystems Data Sheet, Confidential © 2003-2006, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com Revision 1.11 41 - 124 Watchdog lock register, WdogLock Use of this register allows write-access to all other registers to be disabled. This is to prenent rogue software from disabling the watchdog functionality. Writing a value of 0x1ACCE551 will enable write access to all other registers. Writing any other value will disable write accesses. A read from this register will return only the bottom bit: • 0 indicates that write access is enabled (not locked) • 1 indicates that write access is disabled (locked) Table 23 watchdog lock register Name Base Default WdogLock AS3525_WDT_BASE 0x00 Watchdog raw interrupt status register Offset: 0xC00 Bit Bit Name Default Access Bit Description 31:0 Enable register writes W Enable write access to all other registers by writing 0x1ACCE551. Disable write access by writing any other value. 0 Register write enable status 0 R 0: write access to all other registers is enabled (default) 1: write access to all other registers is disabled |
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