參數(shù)資料
型號(hào)： MPC8272CVRB
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 32-BIT, EPROM, 66 MHz, RISC MICROCONTROLLER, PBGA516
封裝： 27 X 27 MM, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-516
文件頁(yè)數(shù)： 20/61頁(yè)
文件大?。?/td> 394K
代理商： MPC8272CVRB
MPC8272 PowerQUICC II Family Hardware Specifications, Rev. 3
Freescale Semiconductor
27
Clock Configuration Modes
7
Clock Configuration Modes
As shown in this table, the clocking mode is set according to two sources:
PCI_CFG[0]— An input signal. Also defined as “PCI_HOST_EN.” See Chapter 6, “External
Signals,” and Chapter 9, “PCI Bridge,” in the SoC reference manual.
PCI_MODCK—Bit 27 in the Hard Reset Configuration Word. See Chapter 5, “Reset,” in the SoC
reference manual.
Within each mode, the configuration of bus, core, PCI, and CPM frequencies is determined by seven bits
during the power-on reset—three hardware configuration pins (MODCK[1–3]) and four bits from
hardware configuration word[28–31] (MODCK_H). Both the PLLs and the dividers are set according to
the selected clock operation mode as described in the following sections.
NOTE
Clock configurations change only after PORESET is asserted.
NOTE: Tval (Output Hold)
The minimum Tval = 2 ns when PCI_MODCK = 1, and the minimum
Tval = 1 ns when PCI_MODCK = 0. Therefore, designers should use clock
configurations that fit this condition to achieve PCI-compliant AC timing.
7.1
PCI Host Mode
These tables show configurations for PCI host mode. The frequency values listed 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. Note that in PCI host mode the input clock is the bus
clock.
Table 16. SoC Clocking Modes
Pins
Clocking Mode
PCI Clock Frequency Range (MHz)
Reference
PCI_CFG[0]1
1 PCI_HOST_EN
PCI_MODCK2
2 Determines PCI clock frequency range.
0
PCI host
50–66
0
1
25–50
1
0
PCI agent
50–66
1
25–50
相關(guān)PDF資料
PDF描述
MPC8272CVRE 32-BIT, EPROM, 100 MHz, RISC MICROCONTROLLER, PBGA516
MPC8272CZQP 32-BIT, EPROM, 300 MHz, RISC MICROCONTROLLER, PBGA516
MPC8272CZQT 32-BIT, EPROM, 400 MHz, RISC MICROCONTROLLER, PBGA516
MPC8272CVRI 32-BIT, EPROM, 200 MHz, RISC MICROCONTROLLER, PBGA516
MPC8272CZQF 32-BIT, EPROM, 133 MHz, RISC MICROCONTROLLER, PBGA516
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8272CVRE 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications
MPC8272CVRI 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications
MPC8272CVRM 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications
MPC8272CVRMIBA 功能描述:微處理器 - MPU 266 MHz 505.4 MIPS RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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(lèi)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
MPC8272CVRP 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*