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MPC8323ECVRADDC 数据表(PDF) 12 Page - Freescale Semiconductor, Inc |
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MPC8323ECVRADDC 数据表(HTML) 12 Page - Freescale Semiconductor, Inc |
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12 / 80 page ![]() MPC8323E PowerQUICC™ II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0 12 Freescale Semiconductor RESET Initialization 5 RESET Initialization This section describes the AC electrical specifications for the reset initialization timing requirements of the MPC8323E. Table 9 provides the reset initialization AC timing specifications for the reset component(s). Table 10 provides the PLL lock times. Table 9. RESET Initialization Timing Specifications Parameter/Condition Min Max Unit Notes Required assertion time of HRESET or SRESET (input) to activate reset flow 32 — tPCI_SYNC_IN 1 Required assertion time of PORESET with stable clock applied to CLKIN when the MPC8323E is in PCI host mode 32 — tCLKIN 2 Required assertion time of PORESET with stable clock applied to PCI_SYNC_IN when the MPC8323E is in PCI agent mode 32 — tPCI_SYNC_IN 1 HRESET/SRESET assertion (output) 512 — tPCI_SYNC_IN 1 HRESET negation to SRESET negation (output) 16 — tPCI_SYNC_IN 1 Input setup time for POR configuration signals (CFG_RESET_SOURCE[0:2] and CFG_CLKIN_DIV) with respect to negation of PORESET when the MPC8323E is in PCI host mode 4— tCLKIN 2 Input setup time for POR configuration signals (CFG_RESET_SOURCE[0:2] and CFG_CLKIN_DIV) with respect to negation of PORESET when the MPC8323E is in PCI agent mode 4— tPCI_SYNC_IN 1 Input hold time for POR config signals with respect to negation of HRESET 0— ns Time for the MPC8323E to turn off POR configuration signals with respect to the assertion of HRESET —4 ns 3 Time for the MPC8323E to turn on POR configuration signals with respect to the negation of HRESET 1— tPCI_SYNC_IN 1, 3 Notes: 1. tPCI_SYNC_IN is the clock period of the input clock applied to PCI_SYNC_IN. When the MPC8323E is In PCI host mode the primary clock is applied to the CLKIN input, and PCI_SYNC_IN period depends on the value of CFG_CLKIN_DIV. See the MPC8323E PowerQUICC™ II Pro Integrated Communications Processor Reference Manual for more details. 2. tCLKIN is the clock period of the input clock applied to CLKIN. It is only valid when the MPC8323E is in PCI host mode. See the MPC8323E PowerQUICC™ II Pro Integrated Communications Processor Reference Manual for more details. 3. POR configuration signals consists of CFG_RESET_SOURCE[0:2] and CFG_CLKIN_DIV. Table 10. PLL Lock Times Parameter/Condition Min Max Unit Notes PLL lock times — 100 μs |
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