Z9973 Datasheet, Cypress Semiconductor

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* Output frequency up to 125 MHz 12 clock outputs: frequency configurable 350 ps max output-to-outpu.

the Z9973 offers a low-voltage PECL clock input as a PLL reference. This allows the user to use LVPECL as the primary cl.

[2] Pin Number 11 12 9 10 44, 46, 48, 50 32, 34, 36, 38 16, 18, 21, 23 29 Pin Name PECL_CLK PECL_CLK# TCLK0 TCLK1 QA(3:0) QB(3:0) QC(3:0) FB_OUT VDDC VDDC VDDC VDDC PWR I/O Type I I I I O O O O PU PD PU PU PECL Clock Input. PECL Clock Input. External.