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C9531CT PDF预览

C9531CT

更新时间: 2024-01-15 21:07:53
品牌 Logo 应用领域
其他 - ETC 时钟发生器
页数 文件大小 规格书
14页 178K
描述
CPU SYSTEM CLOCK GENERATOR|TSSOP|28PIN|PLASTIC

C9531CT 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SSOP包装说明:SSOP-28
针数:28Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.92JESD-30 代码:R-PDSO-G28
JESD-609代码:e0长度:10.2 mm
端子数量:28最高工作温度:70 °C
最低工作温度:最大输出时钟频率:133.33 MHz
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP28,.3封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
电源:3.3 V主时钟/晶体标称频率:33.33 MHz
认证状态:Not Qualified座面最大高度:2 mm
子类别:Clock Generators最大压摆率:160 mA
最大供电电压:3.465 V最小供电电压:3.135 V
标称供电电压:3.3 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:5.3 mm
uPs/uCs/外围集成电路类型:CLOCK GENERATOR, PROCESSOR SPECIFICBase Number Matches:1

C9531CT 数据手册

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APPROVED PRODUCT  
C9531  
PCIX I/O System Clock Generator With EMI Control Features  
Spectrum Spread Clocking  
Down Spread Description  
Spread Spectrum is a modulation technique for distributing clock period over a certain bandwidth (called Spread  
Bandwidth). This technique allows the distribution of the undesirable electromagnetic energy (EMI) over a wide range  
of frequencies therefore reducing the average radiated energy present at any frequency over a given time period. As  
the spread is specified as a percentage of the resting (non-spread) frequency value, it is effective at the fundamental  
and, to a greater extent, at all of its harmonics.  
In this device Spread Spectrum is enabled externally through pin 15 (SSCG#) or internally via SMBus Byte 0 Bit 0 and  
6. Spread spectrum is enabled externally when the SSCG# pin is low. This pin has an internal device pull up resistor,  
which causes its state to default to a HIGH (spread spectrum modulation disabled) unless externally forced to a low. It  
may also be enabled by programming SMBus Byte 0 Bit 0 LOW (to enable SMBus control of the function) and then  
programming SMBus byte 0 bit 6 low to set the feature active.  
Spread off  
Spread on  
Center Frequency,  
Spread off  
Center Frequency,  
Spread on  
Spectrum Spreading Selection Table  
Output clock  
Frequency  
% OF FREQUENCY SPREADING  
MODE  
SMBus Byte 0 Bit 5 =0  
1.0% (-1.0% + 0%)  
1.0% (-1.0% + 0%)  
1.0% (-1.0% + 0%)  
1.0% (-1.0% + 0%)  
SMBus Byte 0 Bit 5 =1  
0.5% (-0.5% + 0%)  
0.5% (-0.5% + 0%)  
0.5% (-0.5% + 0%)  
0.5% (-0.5% + 0%)  
33.3 MHz (XIN)  
66.6 MHz (XIN*2)  
100.0 MHz (XIN*3)  
133.3 MHz (XIN*4)  
Down Spread  
Down Spread  
Down Spread  
Down Spread  
When SSCG is enabled, the device will down spread the clock over a range that is 1% of its resting frequency. This  
means that for a 100 MHz output clock the frequency will sweep through a spectral range from 99 to 100 MHz.  
Cypress Semiconductor Corporation  
525 Los Coches St.  
Document#: 38-07034 Rev. **  
05/02/2001  
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571  
http://www.cypress.com  
Page 3 of 14  

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