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MPC862 数据表(PDF) 22 Page - Freescale Semiconductor, Inc |
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MPC862 数据表(HTML) 22 Page - Freescale Semiconductor, Inc |
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22 / 88 page  MPC862/857T/857DSL PowerQUICC™ Family Hardware Specifications, Rev. 3 22 Freescale Semiconductor Bus Signal Timing B32c CLKOUT rising edge to BS valid - as requested by control bit BST3 in the corresponding word in the UPM (MAX = 0.25 x B1 + 6.80) 7.60 14.30 6.30 13.00 5.00 11.80 3.80 10.50 ns B32d CLKOUT falling edge to BS valid- as requested by control bit BST1 in the corresponding word in the UPM, EBDF = 1 (MAX = 0.375 x B1 + 6.60) 9.40 18.00 7.60 16.00 13.30 14.10 11.30 12.30 ns B33 CLKOUT falling edge to GPL valid - as requested by control bit GxT4 in the corresponding word in the UPM (MAX = 0.00 x B1 + 6.00) 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 the UPM (MAX = 0.25 x B1 + 6.80) 7.60 14.30 6.30 13.00 5.00 11.80 3.80 10.50 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 the UPM (MIN = 0.25 x B1 - 2.00) 5.60 — 4.30 — 3.00 — 1.80 — 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 the UPM (MIN = 0.50 x B1 - 2.00) 13.20 — 10.50 — 8.00 — 5.60 — ns B34b A(0:31), BADDR(28:30), and D(0:31) to CS valid - as requested by CST2 in the corresponding word in UPM (MIN = 0.75 x B1 - 2.00) 20.70 — 16.70 — 13.00 — 9.40 — ns B35 A(0:31), BADDR(28:30) to CS valid - as requested by control bit BST4 in the corresponding word in the UPM (MIN = 0.25 x B1 - 2.00) 5.60 — 4.30 — 3.00 — 1.80 — ns B35a A(0:31), BADDR(28:30), and D(0:31) to BS valid - As Requested by BST1 in the corresponding word in the UPM (MIN = 0.50 x B1 - 2.00) 13.20 — 10.50 — 8.00 — 5.60 — ns B35b A(0:31), BADDR(28:30), and D(0:31) to BS valid - as requested by control bit BST2 in the corresponding word in the UPM (MIN = 0.75 x B1 - 2.00) 20.70 — 16.70 — 13.00 — 9.40 — ns B36 A(0:31), BADDR(28:30), and D(0:31) to GPL valid as requested by control bit GxT4 in the corresponding word in the UPM (MIN = 0.25 x B1 - 2.00) 5.60 — 4.30 — 3.00 — 1.80 — 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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