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STM32F756VG 데이터시트(PDF) 167 Page - STMicroelectronics |
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STM32F756VG 데이터시트(HTML) 167 Page - STMicroelectronics |
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167 / 228 page ![]() DocID027589 Rev 4 167/228 STM32F756xx Electrical characteristics 196 Ethernet characteristics Unless otherwise specified, the parameters given in Table 85, Table 86 and Table 87 for SMI, RMII and MII are derived from tests performed under the ambient temperature, fHCLK frequency summarized in Table 17 and VDD supply voltage conditions summarized in Table 85, 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 5.3.17: I/O port characteristics for more details on the input/output characteristics. Table 85 gives the list of Ethernet MAC signals for the SMI (station management interface) and Figure 55 shows the corresponding timing diagram. Figure 55. Ethernet SMI timing diagram Table 84. Dynamic characteristics: USB ULPI(1) Symbol Parameter Conditions Min. Typ. Max. Unit tSC Control in (ULPI_DIR, ULPI_NXT) setup time - 3 - - ns tHC Control in (ULPI_DIR, ULPI_NXT) hold time - 1 - - tSD Data in setup time - 1.5 - - tHD Data in hold time - 0.5 - - tDC/tDD Data/control output delay 2.7 V < VDD < 3.6 V, CL = 20 pF and OSPEEDRy[1:0] = 11 -5.5 9 -- 5.5 11.5 1.7 V < VDD < 3.6 V, CL = 15 pF and OSPEEDRy[1:0] = 11 - 1. Guaranteed by characterization results. |
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