what's "RF synthesizer LD reference floor" meaning?

[darkstone]

anyone can help explain? thanks

 

[biff44]

maybe "LD" is abbreviation for the word "Locked"?

 

[albbg]

LD usually stands for "Lock Detector". Can you elaborate a little bit more ?

 

[dick_freebird]

I'm wondering whether this is a misreading of "LO"
(local oscillator) amplitude or phase-noise floor?

 

[darkstone]

LD usually stands for "Lock Detector". Can you elaborate a little bit more ?

SYNRXA LD Ref Floor 1

SYNRXA LD Ref Slope 1

Reserved

SYNRXA LD Ref Floor 0

SYNRXA LD Ref Slope 0

Reserved

i am not familiar with PLL，but i think you're right. i dont know lock detector how to decide the PLL locked or not? maybe by the phase detector output pulse width? and what's meaning ref floor?

 

[KlausST]

Hi,

Don't post riddles.

Where is your information from?
What are you talking about?
What is SYNRXA?

If you are talking about an electronic device or a document then tell us. And give a link.

Klaus

 

[FvM]

I agree with dick_freebird, LD is probably a mispelled acronym. What should be the relation of lock detect and synthesizer noise? The PLL is expected to stay locked in normal operation.

Reading the original literature quote is the only way to clarify.

 

[dick_freebird]

The little table snippet looks to me like these are
control bits for "something". I'd guess a receive
channel (RX) synthesized (SYN) frequency that has
application modalities.

Googling it comes up empty so it's a pretty obscure
"something".

With control bits that implies software defined radio.
If so the "LD" might indicate that these are registered
bits controlling the loading of a subsequent control
word to some register destination(s), over a serial link
perhaps, which might take an "operand" / address
word / sub-field followed by a "payload".