How TOF Output of LMH1983 changes for different HD and HD-SDI signals

Nikoo Naeemi

Other Parts Discussed in Thread: LMH1983, LMH1981

Hello

1- I want to use LMH1983 as a master sync generator. I am wondering how the TOF outputs change in relation with input sync signals of analogue and SDI, interlaced and progressive, videos.

2- Also I am wondering whether there is any suitable component to interface with the LMH1983 to generate analogue Tri-level sync signal for HD cameras or no.

3- Is there any recommended deserializer IC, or evaluation board to work with LMH1983 or no.

Thanks,

Nikoo

over 10 years ago

0 Nasser Mohammadi over 10 years ago

TI__Guru* 93670 points

Greetings,

1). The LMH1983 is aligning relative to the digital HVF input signals. Once the device is locked, TOF is aligned to VSYNC.

2). Please take a look at LMH1981 which interfaces to bi level or tri level sync signal.

3). Please note the link below to Xilinx FPGA reference design using LMH1983 and other SDI parts:
http://www.xilinx.com/products/boards-and-kits/1-3v9ee5.html

Regards,,nasser

0 Nikoo Naeemi over 10 years ago in reply to Nasser Mohammadi

Prodigy 180 points

Hello Nasser,

Thank you for your reply. so when I am using an external SDI deserializer, for progressive video the Frame/Field signal should be logic high.

Cheers,

Nikoo

0 Nasser Mohammadi over 10 years ago in reply to Nikoo Naeemi

TI__Guru* 93670 points

Hi Nikoo,

Yes you are correct it should be logic high.

Regards,,nasser

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How TOF Output of LMH1983 changes for different HD and HD-SDI signals