[原创] Silabs Si52204最高性能和最低功耗PCI总线时钟解决方案

Silabs公司的Si52212/08/04/02是业界最高性能和最低功耗PCIe时钟发生器,具有单独的硬件控制引脚,启用和禁用每个输出,扩展频谱启用和禁用用于降低EMI,可选择100, 133或200 MHz不同输出频率.这些频率可通过I2C来控制.Si52212/08/04/02的小占位和低功耗,使这些PCIe时钟发生器非常适合工业和消费类电子应用.器件输出低功率推挽HCSL和PCI-Express Gen 1, Gen 2,Gen 3, Gen 4, Gen 5以及SRIS兼容.低抖动为0.13ps,三角扩展频谱可降低EMI 0.25%或0.5%,内部100 Ω 或85 Ω线路匹配,可调输出转换速率.25MHz晶振输入或时钟输入,I2C支持回读功能,工作电压1.5V-1.8V,工作温度–40到85℃,小型QFN封装,主要用在服务器,存储设备,数据中心,PCIe附加卡,网络接口卡(NIC),图像适配卡,多功能打印机,数字单反(DSLR)照相机,数字相机,数字摄像机和坞站.本文介绍了Si52212/08/04/02主要特性和特性列表,框图以及评估板Si52204-EVB主要特性,框图,电路图,材料清单和PCB设计图

The Si52212, Si52208, and Si52204 can source twelve, eight, and four 100 MHz PCIe differential clock outputs, respectively, plus one 25 MHz LVCMOS reference clock output. The Si52202 can source two 100 MHz PCIe clock outputs only. All differential clock outputs are compliant to PCIe Gen1/2/3/4/5 common clock and separate reference clock architectures specifications.

The Si52212/08/04/02 feature individual hardware control pins for enabling and disabling each output, spread spectrum enable/disable for EMI reduction, and frequency select to select 100, 133, or 200 MHz differential output frequencies. These features canalso be controlled via I2C.
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