|
DDR Clock Reference Board General Specifications |
|
Frequency |
100 mhz , 133mhz |
|
Data Rate |
200mhz , 266mhz |
|
Support |
PC1600 and PC 2100 DDR module
(Registered and Unbuffered) |
|
Connector |
184 pin Standard DIMM connector |
|
Power Supply Options |
3.3Volts: VDD for frequency synthesizer and buffer chips
3.3Volts: VDD for DIMM socket
(or tie directly to first3.3 Volt supply)
2.5Volts: VDDQ for frequency synthesize |
|
Two Clock Reference Nets |
184 pin DDR Unbuffered DIMM Clock net
184 Pin DDR Registered DIMM Clock net |
|
Selectable Modes |
Clocks On/Off
Spread Spectrum Enable / Disable
100 Mhz / 133 Mhz Frequency Selection
PLL On / Off |
|
Card Size |
7.9" x 3.725 x 0.05 |
|
Associated Test Equipment Required for DDR Clock Ref Board |
|
2 Power Supplies |
3.3 Volts (use 2 single or 1 dual power supply)
2.5 Volts |
|
Oscilloscope recommended characteristics |
Sampling Rate (real time) - Minimum of 4 Gsamples/second
RMS Jitter - < 6ps +/- 0.05% of delay setting |
|
Probes recommended characteristics |
Rise time -<140ps
Bandwidth (-3dB) > 2.5GHz
Input Resistance - 100k
Input Capacitance - 0.6pF |
|
Clock Reference Board |
|
MOH-003-10 |
DDR Clock Reference Board 266/333 MHz |
|
MOH-004-10 |
DDR II Clock Reference Board (533/400 MHz) |
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