NH82801GHM S L8YR Intel, NH82801GHM S L8YR Datasheet - Page 762

• Manufacturer Part Number: NH82801GHM S L8YR
• Manufacturer: Intel

Specifications of NH82801GHM S L8YR

• Lead Free Status / RoHS Status: Compliant

20.1.4
.
20.1.5
Note:
762
MAIN_CNT—Main Counter Value Register
Address Offset: 0F0h
Default Value:
TIMn_CONF—Timer n Configuration and Capabilities
Register
Address Offset: Timer 0:
Default Value:
The letter n can be 0, 1, or 2, referring to Timer 0, 1 or 2.
55:52,
51:44,
63:56
42:14
63:0
Bit
Bit
43
Reserved. These bits will return 0 when read.
Timer Interrupt Rout Capability (TIMERn_INT_ROUT_CAP) — RO.
Timer 0, 1: Bits 52, 53, 54, and 55 in this field (corresponding to IRQ 20, 21, 22,
Timer 2:
NOTE: If IRQ 11 is used for HPET #2, software should ensure IRQ 11 is not shared
Reserved. These bits return 0 when read.
Counter Value (COUNTER_VAL[63:0]) — R/W. Reads return the current value of
the counter. Writes load the new value to the counter.
NOTES:
1.
2.
3.
4.
5.
with any other devices to ensure the proper operation of HPET #2.
counter. Since this delays the interrupts for all of the timers, this should be
done only if the consequences are understood. It is strongly recommended
that 32-bit software only operate the timer in 32-bit mode.
Reads to this register are monotonic. No two consecutive reads return the
same value. The second of two reads always returns a larger value (unless
the timer has rolled over to 0).
N/A
Timer 1:
Timer 2:
N/A
Writes to this register should only be done while the counter is halted.
Reads to this register return the current value of the main counter.
32-bit counters will always return 0 for the upper 32-bits of this register.
If 32-bit software attempts to read a 64-bit counter, it should first halt the
and 23) have a value of 1. Writes will have no effect.
Bits 43, 52, 53, 54, and 55 in this field (corresponding to IRQ 11, 20, 21,
22, and 23) have a value of 1. Writes will have no effect.
100–107h,
120–127h,
140–147h
Description
Description
Attribute:
Size:
Attribute:
Size:
High Precision Event Timer Registers
Intel
R/W
64 bits
RO, R/W
64 bits
®
ICH7 Family Datasheet