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MPC855T датащи(PDF) 57 Page - Freescale Semiconductor, Inc |
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MPC855T датащи(HTML) 57 Page - Freescale Semiconductor, Inc |
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57 / 80 page ![]() MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8 Freescale Semiconductor 57 CPM Electrical Characteristics Figure 58. HDLC Bus Timing Diagram 11.8 Ethernet Electrical Specifications Table 22 provides the Ethernet timings as shown in Figure 59 through Figure 63. Table 22. Ethernet Timing Num Characteristic All Frequencies Unit Min Max 120 CLSN width high 40 — ns 121 RCLK1 rise/fall time — 15 ns 122 RCLK1 width low 40 — ns 123 RCLK1 clock period1 80 120 ns 124 RXD1 setup time 20 — ns 125 RXD1 hold time 5 — ns 126 RENA active delay (from RCLK1 rising edge of the last data bit) 10 — ns 127 RENA width low 100 — ns 128 TCLK1 rise/fall time — 15 ns 129 TCLK1 width low 40 — ns 130 TCLK1 clock period1 99 101 ns 131 TXD1 active delay (from TCLK1 rising edge) 10 50 ns 132 TXD1 inactive delay (from TCLK1 rising edge) 10 50 ns 133 TENA active delay (from TCLK1 rising edge) 10 50 ns 134 TENA inactive delay (from TCLK1 rising edge) 10 50 ns TCLK1 CTS1 (Echo Input) 102 100 104 TxD1 (Output) 102 101 RTS1 (Output) 103 104 107 105 |
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