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MPC8247CVRM 数据表(PDF) 27 Page - Motorola, Inc |
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MPC8247CVRM 数据表(HTML) 27 Page - Motorola, Inc |
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27 / 56 page ![]() 27 MPC8272 PowerQUICC II™ Family Hardware Specifications MOTOROLA PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE Clock Configuration Modes Clock Configuration Modes Table 16. Clock Configurations for PCI Host Mode (PCI_MODCK=1) 1, 2 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 Default Modes (MODCK_H=0000) 0000_000 50.0 100.0 2 100.0 200.0 2.5 125.0 250.0 4 25.0 50.0 0000_001 50.0 100.0 2 100.0 200.0 3 150.0 300.0 4 25.0 50.0 0000_010 60.0 120.0 2.5 150.0 300.0 3 180.0 360.0 6 25.0 50.0 0000_011 71.4 120.0 2.5 178.6 300.0 3.5 250.0 420.0 6 29.8 50.0 0000_100 62.5 120.0 2.5 156.3 300.0 4 250.0 480.0 6 26.0 50.0 0000_101 50.0 100.0 3 150.0 300.0 3 150.0 300.0 6 25.0 50.0 0000_110 71.4 100.0 3 214.3 300.0 3.5 250.0 350.0 6 35.7 50.0 0000_111 62.5 100.0 3 187.5 300.0 4 250.0 400.0 6 31.3 50.0 Full Configuration Modes 0001_000 50.0 100.0 3 150.0 300.0 5 250.0 500.0 6 25.0 50.0 0001_001 50.0 100.0 3 150.0 300.0 6 300.0 600.0 6 25.0 50.0 0001_010 50.0 100.0 3 150.0 300.0 7 350.0 700.0 6 25.0 50.0 0001_011 50.0 100.0 3 150.0 300.0 8 400.0 800.0 6 25.0 50.0 0010_000 50.0 100.0 4 200.0 400.0 5 250.0 500.0 8 25.0 50.0 0010_001 50.0 100.0 4 200.0 400.0 6 300.0 600.0 8 25.0 50.0 0010_010 50.0 100.0 4 200.0 400.0 7 350.0 700.0 8 25.0 50.0 0010_011 50.0 100.0 4 200.0 400.0 8 400.0 800.0 8 25.0 50.0 0010_100 50.0 75.0 4 200.0 300.0 5 250.0 375.0 6 33.3 50.0 0010_101 45.5 75.0 4 181.8 300.0 5.5 250.0 412.5 6 30.3 50.0 0010_110 41.7 75.0 4 166.7 300.0 6 250.0 450.0 6 27.8 50.0 0011_000 50.0 50.0 5 250.0 250.0 5 250.0 250.0 5 50.0 50.0 0011_001 41.7 50.0 5 208.3 250.0 6 250.0 300.0 5 41.7 50.0 0011_010 35.7 50.0 5 178.6 250.0 7 250.0 350.0 5 35.7 50.0 0011_011 31.3 50.0 5 156.3 250.0 8 250.0 400.0 5 31.3 50.0 0100_000 Reserved 0100_001 41.7 50.0 6 250.0 300.0 6 250.0 300.0 6 41.7 50.0 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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