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参数资料
| 型号： | SCF5249LAG120 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 120 MHz, RISC PROCESSOR, PQFP144 |
| 封装： | LEAD FREE, QFP-144 |
| 文件页数： | 4/56页 |
| 文件大小： | 918K |
| 代理商： | SCF5249LAG120 |
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SCF5249 Integrated ColdFire Microprocessor Data Sheet, Rev. 3
General Device Information
Freescale Semiconductor
12
5.23 JTAG
To help with system diagnostics and manufacturing testing, the SCF5249 includes dedicated
user-accessible test logic that complies with the IEEE 1149.1A standard for boundary scan testability,
often referred to as Joint Test Action Group, or JTAG. For more information, refer to the IEEE 1149.1A
standard. Freescale provides BSDL files for JTAG testing.
5.24 System Debug Interface
The ColdFire processor core debug interface supports real-time instruction trace and debug, plus
background-debug mode. A background-debug mode (BDM) interface provides system debug.
In real-time instruction trace, four status lines provide information on processor activity in real time (PST
pins). A four-bit wide debug data bus (DDATA) displays operand data and change-of-flow addresses,
which helps track the machine’s dynamic execution path.
5.25 Crystal and On-chip PLL
Typically, an external 16.92 Mhz or 33.86 Mhz clock input is used for CD R/W applications, while an
11.2896 MHz clock is more practical for Portable CD player applications. However, the on-chip
programmable PLL, which generates the processor clock, allows the use of almost any low frequency
external clock (5-35 Mhz).
Two clock outputs (MCLK1 and MCLK2) are provided for use as Audio Master Clock. The output
frequencies of both outputs are programmable to Fxtal, Fxtal/2, Fxtal/3, and Fxtal/4. The Fxtal/3 option is
only available when the 33.86 Mhz crystal is connected.
The SCF5249 supports VCO operation of the oscillator by means of a 16-bit pulse density modulation
output. Using this mode, it is possible to lock the oscillator to the frequency of an incoming IEC958 or IIS
signal. The maximum trim depends on the type and design of the oscillator. Typically a trim of +/- 100
ppm can be achieved with a crystal oscillator and over +/- 1000 ppm with an LC oscillator.
6
General Device Information
The SCF5249 is available in a 160-pin MAP BGA package, or a 144-pin QFP package.
7
Documentation
Table 3 lists the documents that provide a complete description of the SCF5249 and are required to design
properly with the part. Documentation is available from a local Freescale distributor, a Freescale
semiconductor sales office, a Freescale Literature Distribution Center, or through the Freescale DSP home
page on the internet; http://www.freescale.com/
(the source for the latest information).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SCF5249LPV120 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SCF5249VF140 | 功能描述:微处理器 - MPU AUDIO COLDFIRE 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 |
| SCF5249VM140 | 制造商:Freescale Semiconductor 功能描述:AUDIO COLDFIRE - Trays |
| SCF5250 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:SCF5250 Integrated ColdFire Microprocessor |
| SCF5250AG120 | 功能描述:微处理器 - MPU AMADEUS PLUS 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 |
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