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ASM3P18S19BF-08SR Datasheet(PDF) 2 Page - PulseCore Semiconductor |
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ASM3P18S19BF-08SR Datasheet(HTML) 2 Page - PulseCore Semiconductor |
2 / 7 page November 2006 ASM3P18S19B rev 2.2 Low Power Mobile VGA EMI Reduction IC 2 of 7 Notice: The information in this document is subject to change without notice. VDD PD# XOUT REF 1 2 3 4 5 6 7 8 ASM3P18S19B XIN/ CLKIN VSS SRS ModOUT Pin Configuration Pin Description Pin# Pin Name Type Description 1 XIN / CLKIN I Crystal Connection or external frequency input.This pin has dual functions. It can be connected to either an external crystal or an external reference clock 2 VSS P Ground Connection. Connect to system ground. 3 SRS I Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Selection Table). This pin has an internal pull-up resistor. 4 ModOUT O Spread spectrum clock output. (Refer Input Frequency and Modulation Rate Table and Spread Deviation Selection Table) 5 REF O Non-modulated Reference clock output of the input frequency. 6 PD# I Power down control pin. Pull LOW to enable Power-Down mode. This pin has an internal pull-up resistor. 7 VDD P Power Supply for the entire chip. 8 XOUT O Crystal Connection. Input connection for an external crystal. If using an external reference, this pin must be left unconnected. Input Frequency and Modulation Rate Part Number Input Frequency Range Output Frequency range Modulation rate ASM3P18S19B 20MHz to 40MHz 20MHz to 40MHz Input Frequency / 512 Spread Deviation Selection Part Number SRS Spread Deviation 0 -1.25% (DOWN) ASM3P18S19B 1 -1.75% (DOWN) |
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