- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄45388 > MSC8144VT800B (FREESCALE SEMICONDUCTOR INC) 133 MHz, OTHER DSP, PBGA783 PDF資料下載
參數(shù)資料
| 型號(hào)： | MSC8144VT800B |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類(lèi)： | 數(shù)字信號(hào)處理 |
| 英文描述： | 133 MHz, OTHER DSP, PBGA783 |
| 封裝： | 29 X 29 MM, LEAD FREE, PLASTIC, FCPBGA-783 |
| 文件頁(yè)數(shù)： | 64/80頁(yè) |
| 文件大?。?/td> | 1250K |
| 代理商： | MSC8144VT800B |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)當(dāng)前第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)
Hardware Design Considerations
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Freescale Semiconductor
67
3.3
Clock and Timing Signal Board Layout Considerations
When laying out the system board, use the following guidelines:
Keep clock and timing signal paths as short as possible and route with 50
Ω impedance.
Use a serial termination resistor placed close to the clock buffer to minimize signal reflection. Use the following
equation to compute the resistor value:
Rterm = Rim – Rbuf
where Rim = trace characteristic impedance
Rbuf = clock buffer internal impedance.
Note:
See MSC8144 CLKIN and PCI_CLK_IN Board Layout (AN3440) for an example layout.
3.4
Connectivity Guidelines
Note:
Although the package actually uses a ball grid array, the more conventional term pin is used to denote signal
connections in this discussion.
First, select the pin multiplexing mode to allocate the required I/O signals. Then use the guidelines presented in the following
subsections for board design and connections. The following conventions are used in describing the connectivity requirements:
1.
GND indicates using a 10 k
Ω pull-down resistor (recommended) or a direct connection to the ground plane. Direct
connections to the ground plane may yield DC current up to 50mA through the I/O supply that adds to overall power
consumption.
2.
VDD indicates using a 10 kΩ pull-up resistor (recommended) or a direct connection to the appropriate power supply.
Direct connections to the supply may yield DC current up to 50mA through the I/O supply that adds to overall power
consumption.
3.
Mandatory use of a pull-up or pull-down resistor it is clearly indicated as “pull-up/pull-down”.
4.
NC indicates “not connected” and means do not connect anything to the pin.
5.
The phrase “in use” indicates a typical pin connection for the required function.
Note:
Please see recommendations #1 and #2 as mandatory pull-down or pull-up connection for unused pins in case of
subset interface connection.
3.4.1
DDR Memory Related Pins
This section discusses the various scenarios that can be used with DDR1 and DDR2 memory.
Note:
For information about unused differential/non-differential pins in DDR1/DDR2 modes (that is, unused negative lines
of strobes in DDR1), please refer to Table 51.
3.4.1.1
DDR Interface Is Not Used
Table 51. Connectivity of DDR Related Pins When the DDR Interface Is Not Used
Signal Name
Pin Connection
MDQ[0–31]
NC
MDQS[0–3]
NC
MDQS[0–3]
NC
MA[0–15]
NC
MCK[0–2]
NC
MCK[0–2]
NC
MCS[0–1]
NC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSC8144SVT1000A | 133 MHz, OTHER DSP, PBGA783 |
| MSC8144TVT1000A | 133 MHz, OTHER DSP, PBGA783 |
| MSC8144SVT1000B | 133 MHz, OTHER DSP, PBGA783 |
| MSC8144VT1000A | 133 MHz, OTHER DSP, PBGA783 |
| MSC8144SVT800A | 133 MHz, OTHER DSP, PBGA783 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSC81450M | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:RF & MICROWAVE TRANSISTORS AVIONICS APPLICATIONS |
| MSC8151 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Single-Core Digital Signal Processor |
| MSC8151SAG1000B | 制造商:Freescale Semiconductor 功能描述:STARCORE DSP, 1X 1GHZ SC3850 CORES, MAPLE-B ACCELERATOR, DDR - Bulk 制造商:Freescale Semiconductor 功能描述:STARCORE DSP, 1X 1GHZ SC3850 CORES, MAPLE-B ACCELERATOR, DDR - Trays 制造商:Freescale Semiconductor 功能描述:IC DSP 1X 1GHZ SC3850 783FCBGA |
| MSC8151SVT1000B | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Darwin RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| MSC8151TVT1000B | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Darwin RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。