參數資料
型號: BXM80526B500128
英文描述: Microprocessor
中文描述: 微處理器
文件頁數: 45/81頁
文件大小: 598K
代理商: BXM80526B500128
Mobile Intel
Celeron Processor (0.18μ) in BGA2 and Micro-PGA2 Packages
Order Number#249563-001
Datasheet
45
Table 26. Non-GTL+ Signal Group Overshoot/Undershoot Tolerance at the Processor Core
1, 4, 5
Overshoot Amplitude
2
Undershoot Amplitude
3
Allowed Pulse Duration
2.1V
-0.45V
0.45 ns
2.0V
-0.35V
1.5 ns
1.9V
-0.25V
5.0 ns
1.8V
NOTES:
1.
-0.15V
17 ns
Under no circumstances should the non-GTL+ signal voltage ever exceed 2.1V maximum with respect to
ground or -2.1V minimum with respect to V
CCT
(i.e., V
CCT
- 2.1V) under operating conditions.
Ring-backs below V
CCT
cannot be subtracted from overshoots. Lesser undershoot does not allocate longer
or larger overshoot.
Ring-backs above ground cannot be subtracted from undershoots. Lesser overshoot does not allocate
longer or larger undershoot.
System designers are encouraged to follow Intel provided non-GTL+ layout guidelines.
All values are specified by design characterization, and are not tested.
2.
3.
4.
5.
4.3.1
PWRGOOD Signal Quality Specifications
The processor requires PWRGOOD to be a clean indication that clocks and the power supplies
(V
CC
, V
CCT
, etc.) are stable and within their specifications. Clean implies that the signal will
remain below V
IL25
and without errors from the time that the power supplies are turned on, until
they come within specification. The signal will then transition monotonically to a high (2.5V)
state. PWRGOOD may not ringback below 2.0V after rising above V
IH25
.
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