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MPC826XACVR 数据表(PDF) 30 Page - Freescale Semiconductor, Inc |
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MPC826XACVR 数据表(HTML) 30 Page - Freescale Semiconductor, Inc |
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30 / 52 page  MPC8260A PowerQUICC™ II Integrated Communications Processor Hardware Specifications, Rev. 1.1 30 Freescale Semiconductor Clock Configuration Modes Table 19 describes all possible clock configurations when using the MPC8265 or the MPC8266’s internal PCI bridge in agent mode. 100 66/33 MHz 3/6 200 MHz 3 240 MHz 2.5 80 MHz 101 66/33 MHz 3/6 200 MHz 3.5 280 MHz 2.5 80 MHz 110 66/33 MHz 4/8 266 MHz 3.5 300 MHz 3 88 MHz 111 66/33 MHz 4/8 266 MHz 3 300 MHz 2.5 100 MHz Notes: 1. Assumes MODCK_HI = 0000. 2. The frequency depends on the value of PCI_MODCK. If PCI_MODCK is high (logic ‘1’), the PCI frequency is divided by 2 (33 instead of 66 MHz, etc.) and the CPM multiplication factor is multiplied by 2. Refer to Table 15. 3. Core frequency = (60x bus frequency)(core multiplication factor) 4. Bus frequency = CPM frequency / bus division factor Table 19. Clock Configuration Modes in PCI Agent Mode MODCK_H – MODCK[1–3] Input Clock Frequency (PCI)(1),(2) CPM Multiplication Factor1 CPM Frequency Core Multiplication Factor Core Frequency (3) Bus Division Factor 60x Bus Frequency (4) 0001_001 66/33 MHz 2/4 133 MHz 5 166 MHz 4 33 MHz 0001_010 66/33 MHz 2/4 133 MHz 6 200 MHz 4 33 MHz 0001_011 66/33 MHz 2/4 133 MHz 7 233 MHz 4 33 MHz 0001_100 66/33 MHz 2/4 133 MHz 8 266 MHz 4 33 MHz 0010_001 50/25 MHz 3/6 150 MHz 3 180 MHz 2.5 60 MHz 0010_010 50/25 MHz 3/6 150 MHz 3.5 210 MHz 2.5 60 MHz 0010_011 50/25 MHz 3/6 150 MHz 4 240 MHz 2.5 60 MHz 0010_100 50/25 MHz 3/6 150 MHz 4.5 270 MHz 2.5 60 MHz 0011_000 66/33 MHz 2/4 133 MHz 2.5 110MHz 3 44 MHz 0011_001 66/33 MHz 2/4 133 MHz 3 132 MHz 3 44 MHz 0011_010 66/33 MHz 2/4 133 MHz 3.5 154 MHz 3 44 MHz 0011_011 66/33 MHz 2/4 133 MHz 4 176MHz 3 44 MHz 0011_100 66/33 MHz 2/4 133 MHz 4.5 198 MHz 3 44 MHz 0100_000 66/33 MHz 3/6 200 MHz 2.5 166 MHz 3 66 MHz 0100_001 66/33 MHz 3/6 200 MHz 3 200 MHz 366 MHz 0100_010 66/33 MHz 3/6 200 MHz 3.5 233 MHz 366 MHz Table 18. Clock Default Configurations in PCI Agent Mode (MODCK_HI = 0000) (continued) MODCK[1–3] (1) Input Clock Frequency (PCI)2 CPM Multiplication Factor(2) CPM Frequency Core Multiplication Factor Core Frequency (3) Bus Division Factor 60x Bus Frequency (4) |
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