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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H753II датащи(PDF) 201 Page - STMicroelectronics |
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STM32H753II датащи(HTML) 201 Page - STMicroelectronics |
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201 / 361 page  DS12117 Rev 8 201/360 STM32H753xI Electrical characteristics (rev Y) 318 Figure 59. ULPI timing diagram Ethernet characteristics Unless otherwise specified, the parameters given in Table 113, Table 114 and Table 115 for SMI, RMII and MII are derived from tests performed under the ambient temperature, frcc_c_ck frequency summarized in Table 23: General operating conditions, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 10 • Capacitive load C = 20 pF • Measurement points are done at CMOS levels: 0.5VDD. Refer to Section 6.3.15: I/O port characteristics for more details on the input/output characteristics. Table 113 gives the list of Ethernet MAC signals for the SMI and Figure 60 shows the corresponding timing diagram. Table 113. Dynamics characteristics: Ethernet MAC signals for SMI(1) 1. Guaranteed by characterization results. Symbol Parameter Min Typ Max Unit tMDC MDC cycle time(2.5 MHz) 400 400 403 ns Td(MDIO) Write data valid time 1 1.5 3 tsu(MDIO) Read data setup time 8 - - th(MDIO) Read data hold time 0 - - Clock Control In (ULPI_DIR, ULPI_NXT) data In (8-bit) Control out (ULPI_STP) data out (8-bit) tDD tDC tHD tSD tHC tSC ai17361c tDC |
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