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ICS557G-05ALFT Datasheet(PDF) 3 Page - Integrated Device Technology |
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ICS557G-05ALFT Datasheet(HTML) 3 Page - Integrated Device Technology |
3 / 12 page ICS557-05A QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE PCIE SSCG IDT™ / ICS™ QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE 3 ICS557-05A REV H 092407 Pin Descriptions Pin Pin Name Pin Type Pin Description 1 VDDXD Power Connect to +3.3 V digital supply. 2 S0 Input Spread spectrum select pin #0. See table above. Internal pull-up resistor. 3 S1 Input Spread spectrum select pin #1. See table above Internal pull-up resistor. 4 S2 Input Spread spectrum select pin #2. See table above. Internal pull-up resistor. 5 X1 Input Crystal connection. Connect to a fundamental mode crystal or clock input. 6 X2 Output Crystal connection. Connect to a fundamental mode crystal or leave open. 7 PD Input Powers down all PLL’s and tri-states outputs when low. Internal pull-up resistor. 8 OE Input Provides output on, tri-states output (High = enable outputs; Low = disable outputs). Internal pull-up resistor. 9 GND Power Connect to digital ground. 10 IREF Output Precision resistor attached to this pin is connected to the internal current reference. 11 CLKD Output Selectable 100/200 MHz spread spectrum differential Compliment output clock D. 12 CLKD Output Selectable 100/200 MHz spread spectrum differential True output clock D. 13 CLKC Output Selectable 100/200 MHz spread spectrum differential Compliment output clock C. 14 CLKC Output Selectable 100/200 MHz spread spectrum differential True output clock C. 15 VDDODA Power Connect to +3.3 V analog supply. 16 GND Power Connect to analog ground. 17 CLKB Output Selectable 100/200 MHz spread spectrum differential Compliment output clock B. 18 CLKB Output Selectable 100/200 MHz spread spectrum differential True output clock B. 19 CLKA Output Selectable 100/200 MHz spread spectrum differential Compliment output clock A. 20 CLKA Output Selectable 100/200 MHz spread spectrum differential True output clock A. |
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