Intel D2500 DF8064101055400 Data Sheet

Datasheet - Volume 1 of 2

95

Magnitude describes the maximum potential difference between a signal and its voltage 

reference level. For the processor, both are referenced to V

SS

. It is important to note 

that overshoot and undershoot conditions are separated and their impact must be 

determined independently.

Overshoot/undershoot magnitude levels must comply to the absolute maximum 

specifications listed in 

. These specifications must not be violated at any time 

regardless of bus activity or system state. Within these specifications are threshold 

levels that define different allowed pulse durations.

Pulse duration describes the total time an overshoot/undershoot event exceeds the 

overshoot/undershoot reference voltage. The total time could encompass several 

oscillations above the reference voltage. Multiple overshoot/undershoot pulses within a 

single overshoot/undershoot event may need to be measured to determine the total 

pulse duration. 

below the reference voltage can not be subtracted from the total 

1.

Tch = clock high time period for the specific signal.

2.

Other signals include CRTDAC, DIM, LGI, GIO, xPLL.

3.

The maximum OS/US limits for clock signals are limited by reliability. However within these limits, the 

permissible Vcc* is entirely dependent on functionality requirement. 

DDR

VCCSM

1.2*VCCSM

-0.1*VCCSM 0.25 * Tch

Misc. signals 

Vxx

1.2 * Vxx

- 0.1 * Vxx

0.25 * Tch

1, 2

BCLK/HCLK/REFCLK/

REFSSCLK

1.15

- 0.3

3