F81218 Datasheet, PDF (47/64 Pages) Feature Integration Technology Inc. – ISA/LPC to 6 UART Datasheet

F81218
Bit
Name
R/W
Description
7:5 Reserved
R/W Return 0 when read.
4
WDTIRQ_EN
R/W 0 : Time out is asserted only via WDT_OUT#.
1 : Time out is asserted via IRQ and WDT_OUT#.
3:0 SELWDTIRQ[3:0] R/W In LPC mode , select the Serial IRQ channel.
In ISA mode , select one of six IRQ pins .
03h : use serial IRQ channel 3 in LPC mode or use ISA_IRQA in ISA
mode.
04h : use serial IRQ channel 4 in LPC mode or use ISA_IRQB in ISA
mode.
05h : use serial IRQ channel 5 in LPC mode or use ISA_IRQC in ISA
mode.
09h : use serial IRQ channel 9 in LPC mode or use ISA_IRQD in ISA
mode.
0Ah : use serial IRQ channel 10 in LPC mode or use ISA_IRQE in
ISA mode.
0Bh : use serial IRQ channel 11 in LPC mode or use ISA_IRQF in
ISA mode.
Otherwise will disable the interrupt.
6.10.5 Timer Status and Control Register – index F0h
Power-on default [7:0] = 0x02h when DTR3#/PS_WDT is pull-up , else 0x00h.
Bit
Name
R/W
Description
7:3 Reserved
R/W Return 0 when read.
2:1 WDT_UNIT[1:0] R/W 00 : Timer Unit is 10ms.
01 : Timer Unit is 1 second
10 : Timer Unit is 1 minute.
11 : reserved.
0
WDT_EVENT
R/W When read
0 : no time out occur.
1 : time out has occurred.
when write
0 : no action
1 : clear the time out status.
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August, 2007
V0.33P