參數(shù)資料
型號(hào)： MSC7119VM1200
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC
中文描述： 低成本16位數(shù)字信號(hào)處理器與DDR控制器和10/100 Mbps以太網(wǎng)MAC
文件頁(yè)數(shù)： 51/56頁(yè)
文件大?。?/td> 716K
代理商： MSC7119VM1200
Hardware Design Considerations
MSC7119 10/100 Mbps Ethernet MAC Data Sheet, Rev. 6
Freescale Semiconductor
51
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.
相關(guān)PDF資料
PDF描述
MSC80185 RF & MICROWAVE TRANSISTORS GENERAL PURPOSE LINEAR APPLICATIONS
MSC80186 GENERAL PURPOSE LINEAR APPLICATIONS RF & MICROWAVE TRANSISTORS
MSC80195 RF & MICROWAVE TRANSISTORS GENERAL PURPOSE LINEAR APPLICATIONS
MSC8101 Silicon Errata for the MSC8101 Processor, Mask 0K40A
MSC8101M1375F Network Digital Signal Processor
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MSC711XADS 功能描述:開發(fā)板和工具包 - 其他處理器 DEV SYS FOR FSL 711X DEV RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MSC711XEVM 功能描述:開發(fā)板和工具包 - 其他處理器 EVAL KIT W/FULL LIC CW RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MSC711XEVMT 功能描述:KIT EVAL W/FULL LIC CW RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:* 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
MSC7121VRF 制造商:Freescale Semiconductor 功能描述:GPON UMC 140 MHZ - Trays
MSC7128 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:5 x 7-Dot Character x 16-Digit Display Controller/Driver
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

*
*
*