Intel 925 Data Sheet - Page 190
Symbol, Signal, Group, Parameter, Notes, DDR2 Interface, Clocks, Reset, and Miscellaneous Signals
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Electrical Characteristics R Symbol Signal Group Parameter CPAD CPCKG (a, c) (a, c) Host GTL+ Input Capacitance Host GTL+ Input Capacitance (common clock) DDR2 Interface VIL(DC) (DDR2) (k) DDR2 Input Low Voltage Min 2 0.90 - VIH(DC) (DDR2) VIL(AC) (DDR2) (k) DDR2 Input High Voltage SMVREF (DDR2) + 0.125 (k) DDR2 Input Low Voltage - VIH(AC) (DDR2) (k) DDR2 Input High Voltage VOL (DDR2) VOH (DDR2) ILeak (DDR2) CI/O (DDR2) (k, l) DDR2 Output Low Voltage (k, l) DDR2 Output High Voltage (k) Input Leakage Current (k, l) DDR2 Input/Output Pin Capacitance 1.5 V PCI Express Interface Specification 1.0a VTX-DIFF P-P VTX_CM-ACp ZTX-DIFF-DC VRX-DIFF p-p VRX_CM-ACp (f) Differential Peak to Peak Output Voltage (f) AC Peak Common Mode Output Voltage (f) DC Differential TX Impedance (e) Differential Peak to Peak Input Voltage (e) AC peak Common Mode Input Voltage Clocks, Reset, and Miscellaneous Signals VIL (n) Input Low Voltage VIH (n) Input High Voltage ILEAK (n) Input Leakage Current CIN (n) Input Capacitance VIL (o) Input Low Voltage VIH (o) Input High Voltage SMVREF (DDR2) + 0.250 - 1.5 - 3.0 0.400 - 80 0.175 - - 2.0 - 3.0 - 0.660 190 Nom - - Max Unit Notes3 3.5 pF 2.5 pF - SMVREF (DDR2) V - 0.125 - - V - SMVREF (DDR2) V - 0.250 - - V - 0.3 V 1 - V 1 - ±10 µA - 6.0 pF - 0.600 V 2 - 20 mV 100 120 Ohms - 0.600 V 3 - 150 mV - - - - 0 0.710 0.8 V - V ±10 µA 6.0 pF - V 0.850 V Intel® 82925X/82925XE MCH Datasheet