FDC37M81 SMSC [SMSC Corporation], FDC37M81 Datasheet - Page 162

• Manufacturer Part Number: FDC37M81
• Description: PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up
• Manufacturer: SMSC [SMSC Corporation]

WDT_TIME_OUT
Default = 0x00
on VCC POR, VTR
POR and HARD
RESET
WDT_VAL
Default = 0x00
on VCC POR, VTR
POR and HARD
RESET
WDT_CFG
Default = 0x00
on VCC POR, VTR
POR and HARD
RESET
NAME
Table 72 - Auxiliary I/O, Logical Device 8 [Logical Device Number = 0x08]
REG INDEX
0xF1
0xF2
0xF3
Bit[0] Reserved
Bit[1] Reserved
Bits[6:2] Reserved, = 00000
Bit[7] WDT Time-out Value Units Select
Watch-dog Timer Time-out Value
Binary coded, units = minutes (default) or seconds,
selectable via Bit[7] of Reg 0xF1, LD 8.
0x00 Time out disabled
0x01 Time-out = 1 minute (second)
.........
0xFF Time-out = 255 minutes (seconds)
Watch-dog timer Configuration
Bit[0] Joy-stick Enable
=1
=0
Bit[1] Keyboard Enable
=1
=0
Bit[2] Mouse Enable
=1
=0
Bit[3] Reserved
Bits[7:4] WDT Interrupt Mapping
1111 = IRQ15
.........
0011 = IRQ3
0010 = Invalid
0001 = IRQ1
0000 = Disable
= 0 Minutes (default)
= 1 Seconds
WDT is reset upon an I/O read or write of
the Game Port
WDT is not affected by I/O reads or writes
to the Game Port.
WDT is reset upon a Keyboard interrupt.
WDT is not affected by Keyboard interrupts.
WDT is reset upon a Mouse interrupt.
WDT is not affected by Mouse interrupts.
162
DEFINITION
STATE
C
C
C