DS90UH948-Q1: sequence about PDB and LOCK

user6152342

Prodigy 20 points

Part Number: DS90UH948-Q1

After PDB(pin48) was pulled up,how long PLL acquired wil be locked, and output LOCK=1.

over 6 years ago

0 Vijaya Ceekala over 6 years ago

TI__Intellectual 2930 points

Hello

Can you state the input condition on 948? Is the data with correct frequency already present at 948 input? Usually, assuming the data is already present, it could take upto 20mS

Thanks

Vijay

0 user6152342 over 6 years ago in reply to Vijaya Ceekala

Prodigy 20 points

Such as figure 6, the datasheet did not detail show the time of tDDLT. And the same question of tTPDD as figure 5.

Figure 5 and Figure 6 on page 19 of the datasheet.

0 Vijaya Ceekala over 6 years ago in reply to user6152342

TI__Intellectual 2930 points

tDDLT <= 20mS. tTPDD <= 5ms; Thank you for bringing this to our attention and we will address these definitions in our next version

Thanks

Vijay

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DS90UH948-Q1: sequence about PDB and LOCK