參數(shù)資料
型號(hào): MPC8245
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: Part Number Specification for the MPC8245ARZUnnnX Series
中文描述: 型號(hào)規(guī)格為MPC8245ARZUnnnX系列
文件頁(yè)數(shù): 14/20頁(yè)
文件大?。?/td> 183K
代理商: MPC8245
MPC8245 Part Number Specification for the MPC8245ARZUnnnX Series, Rev. 2
14
Freescale Semiconductor
PLL Configuration
1E
11110
33
3
–66
1,2
66–132
231–462
2 (2)
3.5 (2)
1F
11111
10
Not usable
Off
Off
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. In clock off mode, no clocking occurs inside the MPC8245 regardless of the PCI_SYNC_IN input.
11. Range values are shown rounded down to the nearest whole number (decimal place accuracy removed) for
clarity.
12. PLL_CFG[0:4] settings not listed are reserved.
13. Multiplier ratios for this PLL_CFG[0:4] setting are different from the MPC8240 and are not
backwards-compatible.
14. PCI_SYNC_IN range for this PLL_CFG[0:4] setting is different from the MPC8240 and may not be fully
backwards-compatible.
15. Bits 7–4 of register offset <0xE2> contain the PLL_CFG[0:4] setting value.
16. In PLL bypass mode, the PCI_SYNC_IN input signal clocks the internal processor directly, the peripheral
logic PLL is disabled, and the bus mode is set for 1:1 (PCI:Mem) mode operation. This mode is intended for
hardware modeling support. The AC timing specifications given in this document do not apply in the PLL
bypass mode.
17. In dual PLL bypass mode, the PCI_SYNC_IN input signal clocks the internal peripheral logic directly, the
peripheral logic PLL is disabled, and the bus mode is set for 1:1 (PCI_SYNC_IN:Mem) mode operation. In
this mode, the OSC_IN input signal clocks the internal processor directly in 1:1 (OSC_IN:CPU) mode
operation, and the processor PLL is disabled. The PCI_SYNC_IN and OSC_IN input clocks must be
externally synchronized. This mode is intended for hardware modeling support. The AC timing specifications
given in this document do not apply in the dual PLL bypass mode.
Limited by maximum PCI input frequency (66 MHz).
Limited by maximum memory interface operating frequency (133 MHz).
Limited by minimum memory VCO frequency (132 MHz).
Limited due to maximum memory VCO frequency (372 MHz).
Limited by maximum CPU operating frequency (466 MHz).
Limited by minimum CPU VCO frequency (360 MHz).
Limited by maximum CPU VCO frequency (932 MHz).
Limited by minimum CPU operating frequency (100 MHz).
Limited by minimum memory bus frequency (50 MHz).
Table 19. PLL Configurations for the 466-MHz Part Offering (continued)
Ref
PLL_CFG
[0:4]
11,14,15
466-MHz Part
9
Multipliers
PCI Clock Input
(PCI_SYNC_IN)
Range
1
(MHz)
Periph
Logic/Mem
Bus Clock
Range
(MHz)
CPU Clock
Range
(MHz)
PCI-to-Mem
(Mem VCO)
Mem-to-CPU
(CPU VCO)
相關(guān)PDF資料
PDF描述
MPC8245RZU400D Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT00; No. of Contacts:19; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Wall Mount Receptacle; Gender:Male
MPC8245ARZU400D Circular Connector; Body Material:Aluminum; Series:PT00; Number of Contacts:19; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Wall Mount Receptacle; Circular Contact Gender:Pin
MPC8245ARZU466D Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT00; Number of Contacts:19; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Wall Mount Receptacle
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