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)： 5/20頁(yè)
文件大?。?/td> 183K
代理商： MPC8245
MPC8245 Part Number Specification for the MPC8245ARZUnnnX Series, Rev. 2
Freescale Semiconductor
5
General Parameters
4.3.1
Clock AC Specifications
Figure 7
through
Figure 10
show the DLL locking range loop delay vs. frequency of operation for 29 angstrom parts
(400 and 466 MHz). These graphs define the areas of DLL locking for various modes. The gray areas show where
the DLL will lock.
Register settings that define each DLL mode are shown in
Table 9
.
The DLL_MAX_DELAY bit can lengthen the amount of time through the delay line. This is accomplished by
increasing the time between each of the 128 tap points in the delay line. Although this increased time makes it easier
to guarantee that the reference clock will be within the DLL lock range, it also means there may be slightly more
jitter in the output clock of the DLL, should the phase comparator shift the clock between adjacent tap points. Refer
to Freescale application note AN2164,
MPC8245/MPC8241 Memory Clock Design Guidelines
, for details on
memory design.
Table 9. DLL Mode Definition
DLL Mode
Value of Bit 2 of Config
Register at 0x76
Value of Bit 7 of Config
Register at 0x72
Normal tap delay,
No DLL extend
0
0
Normal tap delay,
DLL extend
0
1
Max tap delay,
No DLL extend
1
0
Max tap delay,
DLL extend
1
1
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8245_07 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Processor Hardware Specifications
MPC8245ARVV400D 功能描述:微處理器 - MPU INTEGRATED HOST PROC RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8245ARZU400D 功能描述:微處理器 - MPU INTEGRATED HOST PROC RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8245ARZU400D 制造商:Freescale Semiconductor 功能描述:IC 32BIT MPU 400MHZ BGA-352
MPC8245ARZU466D 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Part Number Specification for the MPC8245ARZUnnnX Series
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