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MPC8271VRM 数据表(PDF) 31 Page - Freescale Semiconductor, Inc |
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MPC8271VRM 数据表(HTML) 31 Page - Freescale Semiconductor, Inc |
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31 / 60 page ![]() MPC8272 PowerQUICC II™ Family Hardware Specifications, Rev. 1.5 Freescale Semiconductor 31 Clock Configuration Modes 0110_001 60.0 120.0 2.5 150.0 300.0 3 180.0 360.0 6 25.0 50.0 0110_010 60.0 120.0 2.5 150.0 300.0 3.5 210.0 420.0 6 25.0 50.0 0110_011 60.0 120.0 2.5 150.0 300.0 4 240.0 480.0 6 25.0 50.0 0110_100 60.0 120.0 2.5 150.0 300.0 4.5 270.0 540.0 6 25.0 50.0 0110_101 60.0 120.0 2.5 150.0 300.0 5 300.0 600.0 6 25.0 50.0 0110_110 60.0 120.0 2.5 150.0 300.0 6 360.0 720.0 6 25.0 50.0 0111_000 Reserved 0111_001 50.0 100.0 3 150.0 300.0 3 150.0 300.0 6 25.0 50.0 0111_010 50.0 100.0 3 150.0 300.0 3.5 175.0 350.0 6 25.0 50.0 0111_011 50.0 100.0 3 150.0 300.0 4 200.0 400.0 6 25.0 50.0 0111_100 50.0 100.0 3 150.0 300.0 4.5 225.0 450.0 6 25.0 50.0 1000_000 Reserved 1000_001 66.7 133.3 3 200.0 400.0 3 200.0 400.0 8 25.0 50.0 1000_010 66.7 133.3 3 200.0 400.0 3.5 233.3 466.7 8 25.0 50.0 1000_011 66.7 133.3 3 200.0 400.0 4 266.7 533.3 8 25.0 50.0 1000_100 66.7 133.3 3 200.0 400.0 4.5 300.0 600.0 8 25.0 50.0 1000_101 66.7 133.3 3 200.0 400.0 6 400.0 800.0 8 25.0 50.0 1000_110 66.7 133.3 3 200.0 400.0 6.5 433.3 866.7 8 25.0 50.0 1001_000 Reserved 1001_001 Reserved 1001_010 57.1 114.3 3.5 200.0 400.0 3.5 200.0 400.0 8 25.0 50.0 1001_011 57.1 114.3 3.5 200.0 400.0 4 228.6 457.1 8 25.0 50.0 1001_100 57.1 114.3 3.5 200.0 400.0 4.5 257.1 514.3 8 25.0 50.0 1001_101 42.9 85.7 3.5 150.0 300.0 5 214.3 428.6 6 25.0 50.0 1001_110 42.9 85.7 3.5 150.0 300.0 5.5 235.7 471.4 6 25.0 50.0 1001_111 42.9 85.7 3.5 150.0 300.0 6 257.1 514.3 6 25.0 50.0 Table 17. Clock Configurations for PCI Host Mode (PCI_MODCK=1) 1, 2 (continued) Mode 3 Bus Clock (MHz) CPM Multiplication Factor 4 CPM Clock (MHz) CPU Multiplication Factor 5 CPU Clock (MHz) PCI Division Factor PCI Clock (MHz) MODCK_H- MODCK[1-3] Low High Low High Low High Low High |
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