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MPC855T 数据表(PDF) 19 Page - Freescale Semiconductor, Inc |
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MPC855T 数据表(HTML) 19 Page - Freescale Semiconductor, Inc |
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19 / 80 page ![]() MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8 Freescale Semiconductor 19 Bus Signal Timing B31a CLKOUT falling edge to CS valid—as requested by control bit CST1 in the corresponding word in UPM 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns B31b CLKOUT rising edge to CS valid—as requested by control bit CST2 in the corresponding word in UPM 1.50 8.00 1.50 8.00 1.50 8.00 1.50 8.00 ns B31c CLKOUT rising edge to CS valid—as requested by control bit CST3 in the corresponding word in UPM 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.04 ns B31d CLKOUT falling edge to CS valid—as requested by control bit CST1 in the corresponding word in UPM, EBDF = 1 13.26 17.99 11.28 16.00 9.40 14.13 7.58 12.31 ns B32 CLKOUT falling edge to BS valid—as requested by control bit BST4 in the corresponding word in UPM 1.50 6.00 1.50 6.00 1.50 6.00 1.50 6.00 ns B32a CLKOUT falling edge to BS valid—as requested by control bit BST1 in the corresponding word in UPM, EBDF = 0 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns B32b CLKOUT rising edge to BS valid—as requested by control bit BST2 in the corresponding word in UPM 1.50 8.00 1.50 8.00 1.50 8.00 1.50 8.00 ns B32c CLKOUT rising edge to BS valid—as requested by control bit BST3 in the corresponding word in UPM 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns B32d CLKOUT falling edge to BS valid—as requested by control bit BST1 in the corresponding word in UPM, EBDF = 1 13.26 17.99 11.28 16.00 9.40 14.13 7.58 12.31 ns B33 CLKOUT falling edge to GPL valid—as requested by control bit GxT4 in the corresponding word in UPM 1.50 6.00 1.50 6.00 1.50 6.00 1.50 6.00 ns B33a CLKOUT rising edge to GPL valid—as requested by control bit GxT3 in the corresponding word in UPM 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns B34 A(0:31), BADDR(28:30), and D(0:31) to CS valid—as requested by control bit CST4 in the corresponding word in UPM 5.58 — 4.25 — 3.00 — 1.79 — ns B34a A(0:31), BADDR(28:30), and D(0:31) to CS valid—as requested by control bit CST1 in the corresponding word in UPM 13.15 — 10.50 — 8.00 — 5.58 — ns B34b A(0:31), BADDR(28:30), and D(0:31) to CS valid—as requested by control bit CST2 in the corresponding word in UPM 20.73 — 16.75 — 13.00 — 9.36 — ns Table 7. Bus Operation Timings (continued) Num Characteristic 33 MHz 40 MHz 50 MHz 66 MHz Unit Min Max Min Max Min Max Min Max |
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