rtd CMX37786HX, User Manual

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CMX37786HX RTD Embedded Technologies, Inc.
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Reg_Enable Set this bit to ‘1’ to enable the Watchdog Runtime Register. Set to ‘0’ to disable.
When Disabled, the Watchdog Runtime Register does not appear in the I/O map, and
interrupts and resets are not generated by the Watchdog Timer.
aDIO/Watchdog Setup Register (I/O Port 0x1F)
aDIO_Base[2:0] Selects the base address for aDIO and the Watchdog Timer based on the following ta-
ble:
Watchdog Runtime Register
The location of this register is determined by aDIO/WDT_Setup[aDIO_Base]. Reading this register also re-
freshes the watchdog timer.
WDT_Active Set this bit to ‘1’ to activate the Watchdog Timer interrupts and resets. Set to ‘0’ to
disable. When disabled, the watchdog timer does not need to be refreshed.
WDT_IRQ_Ena Set this bit to ‘1’ to enable the Watchdog interrupt. Set to ‘0’ to disable.
101 IRQ12
110 Reserved
111 Reserved
aDIO/WDT_Setup
D7 D6 D4 D3 D2 D0
Reserved aDIO_Base Reserved aDIO_Irq
r r/w r/w r/w
0 0 set by BIOS 0
aDIO_Base[2:0] aDIO Base
I/O Address
Watchdog Timer Runtime
Register I/O Address
000 0x450 0x454
001 0x440 0x444
010 0x410 0x414
011 0x400 0x404
100 0x350 0x354
101 0x340 0x344
110 0x310 0x314
111 0x300 0x304
WDT_Runtime
D7 D6 D5 D4 D3 D2 D1 D0
WDT_Active WDT_IRQ_Ena Reserved Reserved WDT_IRQ_Ena WDT_RST_Time
r/w r/w r r r/w r/w
0 0 0 0 0 0
(Continued)
WDT_IRQ[2:0] Interrupt