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430 数据表(PDF) 32 Page - Intel Corporation |
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430 数据表(HTML) 32 Page - Intel Corporation |
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32 / 100 page ![]() Electrical Specifications 32 Datasheet 2.8.5 BCLK[1:0] Specifications (CK410 based Platforms) NOTES: 1. Unless otherwise noted, all specifications in this table apply to all processor frequencies. 2. Crossing voltage is defined as the instantaneous voltage value when the rising edge of BCLK0 equals the falling edge of BCLK1. 3. V Havg is the statistical average of the VH measured by the oscilloscope. 4. Overshoot is defined as the absolute value of the maximum voltage. 5. Undershoot is defined as the absolute value of the minimum voltage. 6. Ringback Margin is defined as the absolute voltage difference between the maximum Rising Edge Ringback and the maximum Falling Edge Ringback. 7. Threshold Region is defined as a region entered around the crossing point voltage in which the differential receiver switches. It includes input threshold hysteresis. 8. The crossing point must meet the absolute and relative crossing point specifications simultaneously. 9. V Havg can be measured directly using “Vtop” on Agilent* oscilloscopes and “High” on Tektronix* oscilloscopes. Table 18. Front Side Bus Differential BCLK Specifications Symbol Parameter Min Typ Max Unit Figure Notes1 V L Input Low Voltage -0.150 0.00 0 N/A V 3 - V H Input High Voltage 0.660 0.70 0 0.850 V 3 - V CROSS(abs) Absolute Crossing Point 0.250 N/A 0.550 V 3, 4 2, 8 V CROSS(rel) Relative Crossing Point 0.250 + 0.5( V Havg – 0.700) N/A 0.550 + 0.5( V Havg – 0.700) V 3, 4 3, 8, 9 ΔV CROSS Range of Crossing Points N/A N/A 0.140 V 3, 4 - V OS Overshoot N/A N/A V H + 0.3 V 3 4 V US Undershoot -0.300 N/A N/A V 3 5 V RBM Ringback Margin 0.200 N/A N/A V 3 6 V TM Threshold Region VCROSS – 0.100 N/A VCROSS + 0.100 V 3 7 |
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