Part Number: LMH1983 Hello,
I am trying to program the LMH1983 to genlock to a User Defined Format, but I have not succeeded.
I need the LMH1983 to genlock to an NTSC, 525I, but I not want to provide the Field, and the Vsync signals. Therefore, I need…
Part Number: LMH1983 The LMH1983 accepts standard video time signals in order to derive locked audio and video clocks. It also has the option to accept fixed 10MHz and 27MHz clocks and locks its internal PLLs to those. In addition, it has the option for…
Part Number: LMH1983 Hi Experts, My customer has question as follows Would you please answer them? 1. Do you have a spec for VCXO? Customer would like to use Pull Range = +/-280ppm. Is it resonable for LMH1983? 2. According to Figure 28 in datasheet, reference…
Part Number: LMH1983 In my application I only care about the clock outputs and do not use the TOF outputs. Can I drive the H-sync only with a generated H sync equivalent to NTSC (525i) and set V-sync and F-sync to 0 ?
Hi Sohhei,
Re-looking this over, it seems like these updates never happened:
(from the datasheet)
8.4.2 User Defined Formats
There are several registers in the LMH1983 that are loaded automatically based on the format of the reference that is detected…
Part Number: LMH1983 Hi,
We've been using LMH1983 for about 5 years now, on thousands of boards built, with no issues. But recently on some of the new boards builds, PLL1 is losing it's lock in Genlock mode using VCXO. This PLL1 Loss of Lock is happening…
Part Number: LMH1983 Hi Team、
Can you please advise me on a question bellow.
Q1. How much of miss-alignment initiate the align process of TOF3,
when TOF3 of the LMH1983 is configured in Auto Align mode?
Mita
Part Number: LMH1983 Other Parts Discussed in Thread: SN65LVELT23 Hi Experts, My customer would like to convert to LVTTL for LMH1983 output. Customer would like to use SN65LVELT23, then customer has question. 1. It can connect directly between LMH1983 output…
Part Number: LMH1983 Other Parts Discussed in Thread: LMK03328 Dear colleague,
Our customer has a concern about LMH1983 phase noise.
They viewed the below post:
https://e2e.ti.com/support/interface/f/138/t/528316?tisearch=e2e-sitesearch&keymatch=12G%…
Part Number: LMH1983 Hi team,
1080i, 59.94 Hz horizontal synchronization created from a fixed oscillator (27 MHz) is input to HIN after power up.
The register settings are the device default settings. When the HIN is input, the NO_LOCK pin is supposed…