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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8536DS датащи(PDF) 89 Page - Freescale Semiconductor, Inc |
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MPC8536DS датащи(HTML) 89 Page - Freescale Semiconductor, Inc |
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89 / 126 page  Electrical Characteristics MPC8536E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5 Freescale Semiconductor 89 2.19 PCI This section describes the DC and AC electrical specifications for the PCI bus of the chip. 2.19.1 PCI DC Electrical Characteristics This table provides the DC electrical characteristics for the PCI interface. 2.19.2 PCI AC Electrical Specifications This section describes the general AC timing parameters of the PCI bus. Note that the SYSCLK signal is used as the PCI input clock. This table provides the PCI AC timing specifications at 66 MHz. Table 67. PCI DC Electrical Characteristics 1 Parameter Symbol Min Max Unit High-level input voltage VIH 2OVDD + 0.3 V Low-level input voltage VIL –0.3 0.8 V Input current (VIN 2 = 0 V or V IN = VDD) IIN —±5 μA High-level output voltage (OVDD = min, IOH = –2 mA) VOH 2.4 — V Low-level output voltage (OVDD = min, IOL = 2 mA) VOL —0.4 V Notes: 1. Ranges listed do not meet the full range of the DC specifications of the PCI 2.2 Local Bus Specifications. 2. The symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2. Table 68. PCI AC Timing Specifications at 66 MHz Parameter Symbol 1 Min Max Unit Notes SYSCLK to output valid tPCKHOV — 6.0 ns 2, 3 Output hold from SYSCLK tPCKHOX 2.0 — ns 2 SYSCLK to output high impedance tPCKHOZ —14 ns 2, 4 Input setup to SYSCLK tPCIVKH 3.0 — ns 2, 5 Input hold from SYSCLK tPCIXKH 0 — ns 2, 5 REQ64 to HRESET 9 setup time tPCRVRH 10 × tSYS —clocks 6, 7 HRESET to REQ64 hold time tPCRHRX 050 ns 7 |
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