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PXA270 Datasheet(PDF) 63 Page - Intel Corporation |
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PXA270 Datasheet(HTML) 63 Page - Intel Corporation |
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63 / 126 page  Electrical, Mechanical, and Thermal Specification 5-13 Intel® PXA270 Processor Electrical Specifications 5.7 48 MHz Output Specifications Software may configure GPIO<11> or GPIO<12> alternate functions to enable the 48-MHz clock output. The 48-MHz output clock is a divided-down output generated from the 312-MHz peripheral PLL. Refer to Table 5-15 for the 48-MHz output specifications. Refer to Section 3 of this document for GPIO alternate functions in the pin usage table. Jitter +/-20pS max Load capacitance (CL) 50pf max Rise and Fall time (Tr & Tf) 15nS max with 50pF load Table 5-14. CLK_TOUT Specifications Parameter Specifications Table 5-15. 48 MHz Output Specifications Parameter Specifications Frequency (derived from 13 MHz crystal) 48 MHz Frequency Accuracy (derived from 13 MHz crystal) +/-200ppm (maximum) Symmetry/Duty Cycle variation 30/70 to 70/30% at VCC Jitter +/-20pS max Load capacitance (CL) 50pf max Rise and Fall time (Tr & Tf) 15nS max with 50pF load |
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