- 您现在的位置：买卖IC网 > PDF目录239729 > IBM25PPC750GXEBB2532T 32-BIT, 800 MHz, RISC PROCESSOR, CBGA292 PDF资料下载
参数资料
| 型号： | IBM25PPC750GXEBB2532T |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 800 MHz, RISC PROCESSOR, CBGA292 |
| 封装： | 21 X 21 MM, 1 MM PITCH, CERAMIC, BGA-292 |
| 文件页数： | 11/74页 |
| 文件大小： | 1054K |
| 代理商： | IBM25PPC750GXEBB2532T |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页当前第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页
Datasheet
IBM PowerPC 750GX RISC Microprocessor
DD1.X
750GX_ds_body.fm SA14-2765-02
September 2, 2005
Electrical and Thermal Characteristics
Page 19 of 73
3.4 Spread Spectrum Clock Generator
3.4.1 Design Considerations
When designing with the Spread Spectrum Clock Generator (SSCG), there are a number of design issues
that must be taken into account.
SSCG creates a controlled amount of long-term jitter. In order for a receiving PLL in the 750GX to operate in
this environment, it must be able to accurately track the SSCG clock jitter.
The accuracy to which the 750GX PLL can track the SSCG clock is referred to as tracking skew. When
performing system timing analysis, the tracking skew must be added or subtracted to the I/O timing specifica-
tions because the tracking skew appears as a static phase error between the internal PLL and the SSCG
clock.
To minimize the impact on I/O timings, the following SSCG configuration is recommended:
Down spread mode, less than or equal to 1% of the maximum frequency.
A modulation frequency of 30 kHz.
Linear sweep modulation or “Hershey’s Kiss” (as in a Lexmark1 profile) modulation profile as shown in
In this configuration, the tracking skew is less than 100 ps.
1. See patent 5,631,920.
Figure 3-2. Linear Sweep Modulation Profile
Down spread
frequency
change
0%
-1%
0
s
Time Increases
P
e
rce
n
tage
Decrea
ses
33.3
s
相关PDF资料 |
PDF描述 |
|---|---|
| ICS843023AGT | 320 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| IRFR9121 | 5.9 A, 80 V, 0.6 ohm, P-CHANNEL, Si, POWER, MOSFET, TO-252AA |
| IM1P-67202AV-25 | 1K X 9 OTHER FIFO, 25 ns, CDIP28 |
| IM3P-67202AL-45 | 1K X 9 OTHER FIFO, 45 ns, PDIP28 |
| IMDP-67202AL-25 | 1K X 9 OTHER FIFO, 25 ns, CDFP28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IBM25PPC750GXEBB2562T | 制造商:IBM 功能描述: |
| IBM25PPC750GXEBB2563T | 制造商:IBM 功能描述: |
| IBM25PPC750GXECB2563T | 制造商:IBM 功能描述: |
| IBM25PPC750GXECB2H33T | 制造商:IBM 功能描述: |
| IBM25PPC750GXECB5H42V | 制造商:IBM 功能描述:POLARIS 1.2 ? 21CBGA GRE2 ? HALFMODE 933MH - Trays |
发布紧急采购，3分钟左右您将得到回复。