In low temperature environment, ADF41513 part of the product register can not be written into the number of cases

Question

The reference design of the ADF41513 is based on the '18 version of the data book. 12 Pin TXDATA-Transmit Data Pin is not in use and is suspended. 
 In the new version of the Data manual, TXDATA-Transmit Data Pin. Pin 12 is not used. Connect Pin 12 to GND. We want to know the internal architecture differences between the old and new versions of the model.

kieranb · Accepted Answer

Hi, 
 There are no internal architecture differences between both versions. Tx data was previously used for SPI. However Muxout is used to transmit data from the device. 
 Can you confirm what cases are not able to be written to? 
 
 Kieran)

Electronic Design Services - PartnerZone

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In low temperature environment, ADF41513 part of the product register can not be written into the number of cases