Clocks Forum Discussions
For the CY22050 and CY22150, the AVDD powers the PLL, VDD powers the crystal oscillator and CLK5 and CLK6, and VDDL powers LCLK1-LCLK4. You should bring up both VDD and AVDD with a smooth monotonic ramp, but VDDL can be powered up or down at any time. Powering it down while still powering AVDD and VDD is not a problem.
During power up, important events takes place where the start up registers are loaded to put the part in a start-up condition. If the power ramp is not monotonic, the start up conditions will be lost and the device may come in an unknown state and not behave as expected. So it is recommended that the power ramp specification be applied as specified in the datasheets.Show Less
I need to set the register of CYII5SM1300AB through Serial 3-Wire Interface;
I have find a few infomation of the serial 3-wire interface, and there is not the interface timing;
Where can i get it.
And i can't find how to load the value to the interal register.
Another question, the description of Pin 4( S_DATA), it's an digital input/output, so can i read the register value through the serial 3-wire interface, and how to realize it.
Thanks and please help me!
Always look and go for Spread Aware Clock Buffers for signal distribution when you want Spread Spectrum signal to pass as they have larger close loop bandwidth. Normal Clock Buffers will filter the spread spectrum signal. Cypress has such buffers with an “S” in the part number. Examples are CY23S02, CY23S05, CY23S08 and CY23S09 with 2, 5, 8 and 9 outputs respectively.
Check Clocks and Buffers Product Selector Guide for detailed part numbers at (Devices are listed on page 11):Show Less
Check out the different devices in the new High Performance Buffer (HPB) family with ultra low-jitter non-PLL clock fanout buffers that delivers up to 10 high-frequency (up to 1.5GHz) differential outputs (LVPECL, LVDS, or CML).
Following is the link for the Parametric Search page that Provides a list of devices in Production:Show Less
Find the clock basics covered in this book in various chapters. I find this to be equivalent to what one can call as Cypress’s Bible to Clocks and Buffers! Post your questions here! The authors themselves might answer.
Following is the link to the book on Cypress Website:Show Less
Would you please kindly advise me which clock ic can suit as below application? parameter: peak - peak 0.8v 16M frequency sine wave input and 3.3v square wave output. thanks very much.Show Less
FleXO that is available with Crystal inside and some with crystal outside is now compiled in product brochure.
FleXO Technology is innovative targetted at providing a clock with reduced jitter!
Truly Industry's Most Flexible Family of Ultra Low Jitter Clock Generators as mentioned on the website!
Moreover the InstaClock software acts as a Wizard to select the appropriate jedec file by giving you choices to select from in a Step by Step approach.
If there is no jedec file meeting the requirements, look at CY22801 that is totally configurable using CyberClocks R3.21.00 software. Show Less