参数资料
型号: SI5351C-A-GT
厂商: Silicon Laboratories Inc
文件页数: 8/72页
文件大小: 0K
描述: IC CLK GEN PLL BLANK CUST 10MSOP
标准包装: 50
系列: MultiSynth™
类型: *
PLL:
输入: 时钟,晶体
输出: CMOS
电路数: 1
比率 - 输入:输出: 3:8
差分 - 输入:输出: 无/无
频率 - 最大: 133MHz
除法器/乘法器: 是/无
电源电压: 2.25 V ~ 3.63 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
Si5351A/B/C
16
Preliminary Rev. 0.95
5. Configuring the Si5351
The Si5351 is a highly flexible clock generator which is entirely configurable through its I2C interface. The device’s
default configuration is stored in non-volatile memory (NVM) as shown in Figure 11. The NVM is a one time
programmable memory (OTP) which can store a custom user configuration at power-up. This is a useful feature for
applications that need a clock present at power-up (e.g., for providing a clock to a processor).
Figure 11. Si5351 Memory Configuration
During a power cycle the contents of the NVM are copied into random access memory (RAM), which sets the
device configuration that will be used during normal operation. Any changes to the device configuration after
power-up are made by reading and writing to registers in the RAM space through the I2C interface. A detailed
register map is shown in Section "8. Register Descriptions" on page 25.
5.1. Writing a Custom Configuration to RAM
To simplify device configuration, Silicon Labs has released the ClockBuilder Desktop. The software serves two
purposes: to configure the Si5351 with optimal configuration based on the desired frequencies and to control the
EVB when connected to a host PC.
The optimal configuration can be saved from the software in text files that can be used in any system, which
configures the device over I2C. ClockBuilder Desktop can be downloaded from www.silabs.com/ClockBuilder and
runs on Windows XP, Windows Vista, and Windows 7.
Once the configuration file has been saved, the device can be programmed via I2C by following the steps shown in
Power-Up
I
2C
RAM
NVM
(OTP)
Default
Config
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SI5351C-A-GTR 功能描述:时钟发生器及支持产品 Dual PLL 125MHz Clk Dual In and I2C 3Out RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56
Si5351C-A-GU 功能描述:时钟发生器及支持产品 AnyRate 2 PLL 125MHz Clk w/2 In&I2C 8out RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56
SI5351C-A-GUR 功能描述:时钟发生器及支持产品 Dual PLL 133MHz Clk Dual In and I2C 8Out RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56
Si5351C-Axxxxx-GM 功能描述:时钟发生器及支持产品 Any-Rate, Dual PLL 133MHz Clock with Dual Input and I2C, 8 outputs, 20-QFN (customized) RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56
Si5351C-Axxxxx-GU 功能描述:时钟发生器及支持产品 Any-Rate, Dual PLL 133MHz Clock with Dual Input and I2C, 8 outputs, 24-QSOP (customized) RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56