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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC826XACVR датащи(PDF) 29 Page - Freescale Semiconductor, Inc |
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MPC826XACVR датащи(HTML) 29 Page - Freescale Semiconductor, Inc |
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29 / 52 page  MPC8260A PowerQUICC™ II Integrated Communications Processor Hardware Specifications, Rev. 1.1 Freescale Semiconductor 29 Clock Configuration Modes 3.2.2 PCI Agent Mode The frequencies listed in Table 18 and Table 19 are for the purpose of illustration only. Users must select a mode and input bus frequency so that the resulting configuration does not exceed the frequency rating of the user’s device. 1001_001 66 MHz 3.5 233 MHz 3 200 MHz 4/8 58/29 MHz 1001_010 66 MHz 3.5 233 MHz 3.5 233 MHz 4/8 58/29 MHz 1001_011 66 MHz 3.5 233 MHz 4 266 MHz 4/8 58/29 MHz 1001_100 66 MHz 3.5 233 MHz 4.5 300 MHz 4/8 58/29 MHz 1010_000 100 MHz 2 200 MHz 2 200 MHz 3/6 66/33 MHz 1010_001 100 MHz 2 200 MHz 2.5 250 MHz 3/6 66/33 MHz 1010_010 100 MHz 2 200 MHz 3 300 MHz 3/6 66/33 MHz 1010_011 100 MHz 2 200 MHz 3.5 350 MHz 3/6 66/33 MHz 1010_100 100 MHz 2 200 MHz 4 400 MHz 3/6 66/33 MHz 1011_000 100 MHz 2.5 250 MHz 2 200 MHz 4/8 62/31 MHz 1011_001 100 MHz 2.5 250 MHz 2.5 250 MHz 4/8 62/31MHz 1011_010 100 MHz 2.5 250 MHz 3 300 MHz 4/8 62/31 MHz 1011_011 100 MHz 2.5 250 MHz 3.5 350 MHz 4/8 62/31 MHz 1011_100 100 MHz 2.5 250 MHz 4 400 MHz 4/8 62/31 MHz Notes: 1. Input clock frequency is given only for the purpose of reference. User should set MODCK_H–MODCK_L so that the resulting configuration does not exceed the frequency rating of the user’s part. 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.). Refer to Table 15. 3. In this mode, PCI_MODCK must be “0”. Table 18. Clock Default Configurations in PCI Agent Mode (MODCK_HI = 0000) 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) 000 66/33 MHz 2/4 133 MHz 2.5 166 MHz 2 66 MHz 001 66/33 MHz 2/4 133 MHz 3 200 MHz 2 66 MHz 010 66/33 MHz 3/6 200 MHz 3 200 MHz 3 66 MHz 011 66/33 MHz 3/6 200 MHz 4 266 MHz 3 66 MHz Table 17. Clock Configuration Modes in PCI Host Mode (continued) MODCK_H – MODCK[1–3] Input Clock Frequency(1) (Bus) CPM Multiplication Factor CPM Frequency Core Multiplication Factor Core Frequency PCI Division Factor(2) PCI Frequency2 |
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