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| 型号： | MSC7115VM800 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 48/56页 |
| 文件大小： | 0K |
| 描述： | IC DSP PROCESSOR 16BIT 400MAPBGA |
| 标准包装： | 90 |
| 系列： | StarCore |
| 类型： | SC1400 内核 |
| 接口： | 主机接口，I²C，UART |
| 时钟速率： | 200MHz |
| 非易失内存： | 外部 |
| 芯片上RAM： | 400kB |
| 电压 - 输入/输出： | 3.30V |
| 电压 - 核心： | 1.20V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 400-LFBGA |
| 供应商设备封装： | 400-MAPBGA（17x17） |
| 包装： | 托盘 |
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MSC7115 Low-Cost 16-bit DSP with DDR Controller Data Sheet, Rev. 11
Hardware Design Considerations
Freescale Semiconductor
52
3.5.3
General Routing
The general routing considerations for the DDR are as follows:
All DDR signals must be routed next to a solid reference:
— For data, next to solid ground planes.
— For address/command, power planes if necessary.
All DDR signals must be impedance controlled. This is system dependent, but typical values are 50–60 ohm.
Minimize other cross-talk opportunities. As possible, maintain at least a four times the trace width spacing between all
DDR signals to non-DDR signals.
Keep the number of vias to a minimum to eliminate additional stubs and capacitance.
Signal group routing priorities are as follows:
— DDR clocks.
— Route MVTT/MVREF.
— Data group.
— Command/address.
Minimize data bit jitter by trace matching.
3.5.4
Routing Clock Distribution
The DDR clock distribution considerations are as follows:
DDR controller supports six clock pairs:
— 2 DIMM modules.
— Up to 36 discrete chips.
For route traces as for any other differential signals:
— Maintain proper difference pair spacing.
— Match pair traces within 25 mm.
Match all clock traces to within 100 mm.
Keep all clocks equally loaded in the system.
Route clocks on inner critical layers.
3.5.5
Data Routing
The DDR data routing considerations are as follows:
Route each data group (8-bits data + DQS + DM) on the same layer. Avoid switching layers within a byte group.
Take care to match trace lengths, which is extremely important.
To make trace matching easier, let adjacent groups be routed on alternate critical layers.
Pin swap bits within a byte group to facilitate routing (discrete case).
Tight trace matching is recommended within the DDR data group. Keep each 8-bit datum and its DM signal within ±
25 mm of its respective strobe.
Minimize lengths across the entire DDR channel:
— Between all groups maintain a delta of no more than 500 mm.
— Allows greater flexibility in the design for readjustments as needed.
DDR data group separation:
— If stack-up allows, keep DDR data groups away from the address and control nets.
— Route address and control on separate critical layers.
— If resistor networks (RNs) are used, attempt to keep data and command lines in separate packages.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSC7116 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC |
| MSC7116_08 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC |
| MSC7116VF1000 | 功能描述:数字信号处理器和控制器 - DSP, DSC 7116 STARLITE PB-BEARING RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MSC7116VM1000 | 功能描述:数字信号处理器和控制器 - DSP, DSC 7116 STARLITE - PBF RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MSC7116VM800 | 功能描述:IC DSP PROCESSOR 16BIT 400MAPBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP（数字式信号处理器） 系列:StarCore 标准包装:2 系列:StarCore 类型:SC140 内核 接口:DSI，以太网，RS-232 时钟速率:400MHz 非易失内存:外部 芯片上RAM:1.436MB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:431-BFBGA，FCBGA 供应商设备封装:431-FCPBGA（20x20） 包装:托盘 |
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