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Altera_Forum
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15 years ago

using lvds

G´day !! I´m using an ADC with differential output (LVDS). It´s a device including 8 ADCs with Serial LVDS output. Data from each ADC is serialized and provided on a seperate channel. This seri...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Hi there !!!

Are u sure about the value of the serialisation factor? I thought that a serialisationfactor unequal one is only possible if i would mix, say 2 channels, together and transfer the data alternating. so for mixing 2 channels gives an serialisationfactor or deserialisationfactor of 2, so every second bit (beginning with bit 0) belongs to channel 1 and all other to channel 2. So it doesn´t matter how many bits belong to one datastream or sampled value. I´m not sure about but i thought that i found this out while reading through altlvds documentation.

The problem with running out of PLL came also to my mind as i will use more devices so i think i´ll have to find ways to work without the megafunction and use the dataclock and frame-indicator in combination with shiftregisters...

So the solution u provided in your previous post is this possible solution using altlvds or not ? what´s this ddr-in block ? Is it possible to go in shiftregisters with differential signals ??

thanks for helping

greets