LTC6953 as clock divider

Flylower.Wang on Nov 27, 2020

I use ltc6953，Config all channel for Mode 0，Srqen set 0，ddely adely also set 0，as datasheet it is free running，only set divider，but no outputs，register 0xb set 0，during config ltc6953，I set sd_ to be 1 all，does it need to config sync operation？anyone can give me a free running config for me，thanks.

And register 0 has field vcook and vcook_，when sd_ set 1，vcook is 1，vcook_ is 0，otherwise vcook is 0，vcook_ is 1；when sd_ is 1，even if no signal in ltc6953's clk in port，vcook also is 1，what means does field vcook？

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ChrisPearson
Dec 1, 2020 +1
I've attached some registers settings for a free running config. I set all the dividers to two. The txt file is a list of registers and settings. The .zip file includes the LTC6952Wizard setup file…

ChrisPearson

on Dec 1, 2020 9:31 PM
I've attached some registers settings for a free running config. I set all the dividers to two. The txt file is a list of registers and settings. The .zip file includes the LTC6952Wizard setup file that can be used with the eval board. If you are using the eval board and the LTC6952Wizard, you can output all your GUI settings to a text file by selecting File-->Export Register Values. Our you can use the LTC6952Wizard in simulation mode (without an eval board) to create your register file that way. You can download the LTC6952Wizard from the LTC6953 product page (https://www.analog.com/media/en/evaluation-boards-kits/evaluation-software/LTC6952_LTC6953_Wizard_Eval_SW.zip )

VCOOK = 1 when an input signal is applied to the IN+/- pins. VCOOK = 0 when there is not an input signal applied. The !VCOOK will display the opposite. For whatever reason, VCOOK stands for VCO (voltage controlled oscillator) is OK. In a lot of cases VCOs are attached to the input of our parts, but any input signal will be fine. That really should be a INOK bit (input ok).

Fullscreen LTC6953passthure_regVals.txt Download

# All values in Hexadecimal # # Register values from 0x00 to 0x38: # 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x03 # # Addr Value # 0x00 0x00 0x01 0x04 0x02 0x00 0x03 0x00 0x04 0x00 0x05 0x00 0x06 0x00 0x07 0x00 0x08 0x00 0x09 0x00 0x0a 0x00 0x0b 0x00 0x0c 0x08 0x0d 0x80 0x0e 0x00 0x0f 0x00 0x10 0x08 0x11 0x80 0x12 0x00 0x13 0x00 0x14 0x08 0x15 0x80 0x16 0x00 0x17 0x00 0x18 0x08 0x19 0x80 0x1a 0x00 0x1b 0x00 0x1c 0x08 0x1d 0x80 0x1e 0x00 0x1f 0x00 0x20 0x08 0x21 0x80 0x22 0x00 0x23 0x00 0x24 0x08 0x25 0x80 0x26 0x00 0x27 0x00 0x28 0x08 0x29 0x80 0x2a 0x00 0x2b 0x00 0x2c 0x08 0x2d 0x80 0x2e 0x00 0x2f 0x00 0x30 0x08 0x31 0x80 0x32 0x00 0x33 0x00 0x34 0x08 0x35 0x80 0x36 0x00 0x37 0x00 0x38 0x03

LTC6953passthru.zip
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