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LAN9500AI データシート(PDF) 197 Page - Microchip Technology |
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LAN9500AI データシート(HTML) 197 Page - Microchip Technology |
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197 / 213 page ![]() 2010 - 2015 Microchip Technology Inc. DS00001875A-page 197 LAN950x 8.5.3 RESET AND CONFIGURATION STRAP TIMING Figure 8-3 illustrates the nRESET pin timing requirements and its relation to the configuration strap pins and output drive. Assertion of nRESET is not a requirement. However, if used, it must be asserted for the minimum period specified. FIGURE 8-3: NRESET RESET PIN TIMING TABLE 8-16: NRESET RESET PIN TIMING VALUES Symbol Description MIN TYP MAX Units trstia nRESET input assertion time 1 uS tcss Configuration strap pins setup to nRESET deassertion 200 nS tcsh Configuration strap pins hold after nRESET deassertion 10 nS todad Output drive after deassertion 30 nS tcss nRESET Configuration Strap Pins trstia tcsh Output Drive todad |
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