www.ti.com
TI Pro-Clock?
Figure 4. Programming Assistant
The Programming Assistant starts with its own default setup. The default setup of the Programming
Assistant is different to the default setup of the CDCE906/CDCE706. This is why, the Programming
Assistant has a simple startup setup, which makes it easy to create a new user-defined setup. From this
default setup, different parameters can be edited to create a user setup. All dividers, the VCO frequency,
the SSC modulation frequency, the switch A/B settings, as well as the actual output frequency, and the
actual error of all outputs, are calculated by defining the following parameters:
signal source
fin
CDCE906/
CDCE706 Switch
SSC Modulation
fmod
fout
error
disable PLL
bypass
activate SSC
Choose among crystal oscillator, LVMOS, and differential clock source
Choose from 1 MHz to 167/200 MHz for CDCE906/CDCE706 LVCMOS/differential
input and from 8 MHz to 54 MHz for crystal oscillator
Choose if a CDCE706 or a CDCE906 setup is provided
Choose between no modulation and different center and down-spread modulations
provided by PLL 2
Choose a modulation frequency for SSC; actual fmod shows the closest possible
modulation frequency
Choose the output frequency for Y0–Y5; actual fout displays the closest possible
output frequency with an error in frequency smaller than |error|
Choose the maximum allowed error between fout and actual fout; actual error
displays the error of current frequency actual fout
If the input frequency is a multiple of fout, fout is derived directly from fin. Click
disable PLL bypass if Yx should be derived from a PLL.
Choose which outputs will have SSC. All outputs with SSC activated must be
derived from the same PLL.
SCAU017B – August 2006 – Revised August 2007
CDCE906/CDCE706 Programming Evaluation Module
11
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相关代理商/技术参数
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CDCE906R005PWR 制造商:Texas Instruments 功能描述:
CDCE906R007PWR 制造商:Texas Instruments 功能描述: