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440EPX Datasheet(PDF) 77 Page - Applied Micro Circuits Corporation |
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440EPX Datasheet(HTML) 77 Page - Applied Micro Circuits Corporation |
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77 / 94 page ![]() 440EPx – PPC440EPx Embedded Processor Revision 1.26 – October 15, 2007 AMCC Proprietary 77 Preliminary Data Sheet PerClk (and OPB Clock) frequency (for ext. master or sync. slaves) 33.33MHz 83.33 MHz PerClk period 12 30 ns PerClk high time 50% of nominal period 66% of nominal period ns PerClk low time 33% of nominal period 50% of nominal period ns UARTSerClk frequency – 1000 / (2TOPB 1+2ns) MHz 1 UARTSerClk period 2TOPB 1+2 – ns 1 UARTSerClk high time TOPB 1+1 – ns 1 UARTSerClk low time TOPB 1+1 – ns 1 USB2Clk frequency 60 60 MHz 3 USB2Clk period 16.66 16.66 ns 3 USB2XtalIn/USB2XtalOut frequency 12 48 MHz 3 USB2XtalIn/USB2XtalOut period 20.8 83.33 ns 3 USB2XtalIn/USB2XtalOut high time 40% of nominal period 60% of nominal period ns USB2XtalIn/USB2XtalOut low time 40% of nominal period 60% of nominal period ns Table 19. Peripheral Interface Clock Timings (Sheet 2 of 3) Parameter Min Max Units Notes |
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