The Si5351 is a highly flexible clock generator which is entirely conf" />
參數(shù)資料
型號: SI5351C-A-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 8/72頁
文件大?。?/td> 0K
描述: IC CLK GEN PLL BLANK CUST 20-QFN
標準包裝: 75
系列: MultiSynth™
類型: *
PLL:
輸入: 時鐘,晶體
輸出: CMOS
電路數(shù): 1
比率 - 輸入:輸出: 3:8
差分 - 輸入:輸出: 無/無
頻率 - 最大: 133MHz
除法器/乘法器: 是/無
電源電壓: 2.25 V ~ 3.63 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-VFQFN 裸露焊盤
供應商設備封裝: 20-QFN(4x4)
包裝: 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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相關代理商/技術參數(shù)
參數(shù)描述
SI5351C-A-GMR 功能描述:時鐘發(fā)生器及支持產品 Dual PLL 133MHz Clk Dual In and I2C 8Out RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56
Si5351C-A-GT 功能描述:時鐘發(fā)生器及支持產品 AnyRate 2 PLL 125MHz Clk w/2 In&I2C 3out RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56
SI5351C-A-GTR 功能描述:時鐘發(fā)生器及支持產品 Dual PLL 125MHz Clk Dual In and I2C 3Out RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56
Si5351C-A-GU 功能描述:時鐘發(fā)生器及支持產品 AnyRate 2 PLL 125MHz Clk w/2 In&I2C 8out RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56
SI5351C-A-GUR 功能描述:時鐘發(fā)生器及支持產品 Dual PLL 133MHz Clk Dual In and I2C 8Out RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56