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IMX53CEC датащи(PDF) 82 Page - Freescale Semiconductor, Inc |
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IMX53CEC датащи(HTML) 82 Page - Freescale Semiconductor, Inc |
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82 / 204 page ![]() i.MX53xD Applications Processors for Consumer Products, Rev. 2 82 Freescale Semiconductor Electrical Characteristics Figure 42. RMII Mode Signal Timing Diagram 4.7.6 Flexible Controller Area Network (FLEXCAN) AC Electrical Specifications The electrical characteristics are related to the CAN transceiver external to i.MX53xD such as MC33902 from Freescale.The i.MX53xD has two CAN modules available for systems design. Tx and Rx ports for both modules are multiplexed with other I/O pins. See the IOMUXC chapter of the i.MX53 Reference Manual to see which pins expose Tx and Rx pins; these ports are named TXCAN and RXCAN, respectively. M20 FEC_RXD[1:0], CRS_DV(FEC_RX_DV), FEC_RX_ER to REF_CLK setup 4— ns M21 REF_CLK to FEC_RXD[1:0], FEC_RX_DV, FEC_RX_ER hold 2— ns 1 Test conditions: 25pF on each output signal. Table 56. RMII Signal Timing (continued) No. Characteristics1 Min Max Unit REF_CLK (input) FEC_TX_EN M16 M17 M18 M19 M20 M21 FEC_RXD[1:0] FEC_TXD[1:0] (output) FEC_RX_ER CRS_DV (input) |
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