EP80579 Datasheet, PDF (1194/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
33.6.2
Watchdog Timer Register Details
All registers not mentioned are reserved.
Table 33-25. Summary of Watchdog Timer Registers in I/O Space
Offset Start Offset End
Register ID - Description
00h
01h
02h
04h
05h
06h
08h
0Ch
0Dh
10h
18h
00h
01h
02h
04h
05h
06h
08h
0Ch
0Dh
10h
18h
“Offset 00h: PV1R0 - Preload Value 1 Register 0” on page 1194
“Offset 01h: PV1R1 - Preload Value 1 Register 1” on page 1195
“Offset 02h: PV1R2 - Preload Value 1 Register 2” on page 1195
“Offset 04h: PV2R0 - Preload Value 2 Register 0” on page 1196
“Offset 05h: PV2R1 - Preload Value 2 Register 1” on page 1196
“Offset 06h: PV2R2 - Preload Value 2 Register 2” on page 1197
“Offset 08h: GISR - General Interrupt Status Register” on page 1197
“Offset 0Ch: RR0 - Reload Register 0” on page 1198
“Offset 0Dh: RR1 - Reload Register 1” on page 1199
“Offset 10h: WDTCR - WDT Configuration Register” on page 1199
“Offset 18h: WDTLR - WDT Lock Register” on page 1201
Default
Value
FFh
FFh
0Fh
FFh
FFh
0Fh
00h
00h
00h
00h
00h
Note:
33.6.2.1
Base Address for the Watchdog Timer registers, listed in this section, is configurable.
See Section 33.8.3, “SIW Configuration Register Summary” on page 1207 for details.
Offset 00h: PV1R0 - Preload Value 1 Register 0
Table 33-26. Offset 00h: PV1R0 - Preload Value 1 Register 0
Description:
View: IA F
Base Address: Base (IO)
Offset Start: 00h
Offset End: 00h
Size: 8 bit
Default: FFh
Power Well: Core
Bit Range
07 : 00
Bit Acronym
Bit Description
Sticky
PLOAD1_7_0
Preload_Value_1 [7:0]: This register is used to hold the
bits 0 through 7 of the preload value 1 for the WDT Timer.
The Value in the Preload Register is automatically
transferred into the 35-bit down counter every time the
WDT enters the first stage.
The value loaded into the preload register needs to be one
less than the intended period. This is because the timer
makes use of zero-based counting (i.e. zero is counted as
part of the decrement).
Refer to Section 33.6.3.2 for details on how to change the
value of this register.
Bit Reset
Value
FFh
Bit Access
RW
Intel^® EP80579 Integrated Processor Product Line Datasheet
1194
August 2009
Order Number: 320066-003US