参数资料
型号: MPC8349E-MITXE
厂商: Freescale Semiconductor
文件页数: 37/48页
文件大小: 0K
描述: BOARD REFERENCE FOR MPC8349
产品培训模块: MPC834x PowerQUICC II Processors
标准包装: 1
系列: PowerQUICC II™ PRO
类型: MPU
适用于相关产品: MPC8349E
所含物品: 模块和其他硬件
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其它名称: MPC8349E-MITXE -ND
MPC8349E-mITXE Board
1.6.5
Power Supply
The MPC8349E requires a 3.3 V and 5 V power supply from the ATX power connector for normal
operation. The 3.3 V power supply is reduced to 1.2 V and 2.5 V. The 1.2 V power is generated from a
switching power supply for a CPU core and the GBE L2 switch. The 2.5 V power is generated from an
LDO regulator for the DDR controller.
Figure 27 shows the power supply block diagram.
MIC2505
MAX1953
5V
USB VBUS Power
1.2 V
5 V input
5V
CPU Fan
MPC8349E Vcore, VSC7385
3.3 V input
MIC29302
2.5 V
DDR
3.3 V
Figure 27. Power Supply Circuitry
The core supply voltage and I/O supply voltages do not have to be applied in any particular order. During
the power ramp up, before the power supplies are stable, there may be an interval when the I/O pins are
actively driven. After power is stable, as long as PORESET is asserted, most I/O pins are three-stated. To
minimize the time I/O pins are actively driven, apply core voltage before I/O voltage and assert PORESET
before the power supplies fully ramp up. In general, for a dual-supply voltage device, minimize the voltage
difference between the V core and V I/O during ramp-up and power-down.
1.6.6
Chip-Select Assignments and Memory Map
Table 23 shows an example memory map on the MPC8349E that is used for u-boot 1.1.3 in the Flash
memory.
Table 23. Example Memory Map, Local Access Window, and Chip-Select Assignments
Address Range
0x0000_0000–0x4000_0000
Target Interface
DDR
Chip-Select
Line
MCS0/MCS1
Device Name
DDR SDRAM (256 Mbytes– 1
Port Size (Bits)
64
Gbyte)
0x8000_0000–0x9FFF_FFFF
0xE200_0000–0xE2FF_FFFF
0xA000_0000–0xBFFF_FFFF
PCI1
PCI1
PCI2
Nil
Nil
Nil
PCI1 memory space (512 Mbyte)
PCI1 I/O space (16 Mbyte)
PCI2 memory space (512 Mbyte)
32
32
32
MPC8349E-mITXE Reference Design Platform User’s Guide, Rev. 2
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
37
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相关代理商/技术参数
参数描述
MPC8349E-MITXE 制造商:Freescale Semiconductor 功能描述:MPC8349E Reference Platform
MPC8349E-MITX-GP 功能描述:开发板和工具包 - 其他处理器 GP REF DESGN BRD FOR MPC RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
MPC8349E-MITX-GP 制造商:Freescale Semiconductor 功能描述:MPC8349e-MITX-GP Industrial Re
MPC8349EVVAGD 功能描述:IC MPU PWRQUICC II PRO 672-TBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:MPC83xx 标准包装:1 系列:MPC85xx 处理器类型:32-位 MPC85xx PowerQUICC III 特点:- 速度:1.2GHz 电压:1.1V 安装类型:表面贴装 封装/外壳:783-BBGA,FCBGA 供应商设备封装:783-FCPBGA(29x29) 包装:托盘
MPC8349EVVAGDB 功能描述:微处理器 - MPU 8349 TBGA NO PB W/ ENC RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324