JAJSH11B November 2014 – August 2019 DS90UB929-Q1
PRODUCTION DATA.
When ambient temperature around the DS90UB929-Q1 changes by more than 40°C, the frequency detection logic in the device can RESET the FPD-Link III PLL even though the input PCLK has not changed. This behavior may result in a loss of lock in the Deserializer and flicker on the system display.
The following programming sequence is required for all systems. This should be written after the user register configuration of the DS90UB929-Q1 and downstream deserializer configuration.
Any device configuration including this one should be written as a part of the Init A sequence as shown in Figure 29.