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PCS3P2189A Datasheet(PDF) 2 Page - PulseCore Semiconductor |
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PCS3P2189A Datasheet(HTML) 2 Page - PulseCore Semiconductor |
2 / 7 page May 2008 PCS3P2189A rev 0.2 Spread Spectrum Clock Generator 2 of 7 Notice: The information in this document is subject to change without notice. Pin Configuration Pin Description Pin# Pin Name Type Description 1 CLKIN / XIN I Crystal connection or External reference Clock Input 2 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 3 SSON I Modulation enables pin. When HIGH enables spread spectrum modulation. Has an Internal pull up resistor 4 S1 I Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. 5 S0 O Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. 6 VSS P Ground Connection. Connect to system ground. 7 ModOUT O Low EMI 4x clock output. 8 VDD P Power Supply Voltage Pin. Connect to +3.3V. Spread Deviation Selection Table (For an Input CLK=15MHz) S1 S0 Deviation (± %) 0 0 0.5 0 1 1.0 1 0 1.5 1 1 2.0 Modulation Enable Setting Table SSON Modulation L No Modulation H Modulation 6 S0 1 2 3 4 5 7 8 PCS3P2189A CLKIN / XIN XOUT S1 ModOUT VSS SSON VDD |
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