How to recieve LVDS signal using DSP chip or microcontroller?

user6244022

Other Parts Discussed in Thread: SN65LVDS386

Hi,

A cmos image chip produce a LVDS signal(34 data lane). The signal should be recieved and algorithmic processed.

Is there any DSP chip or microcontroller can directly recieve LVDS signal? Or some signal converter chip should be used?

over 5 years ago

0 Rex Chang over 5 years ago

TI__Guru 50170 points

Hi,

I did a search in ti e2e forum and it seems that several other forums deal with LVDS interface, such as HSDC-HSSC and Radar forums. Since you require the LVDS signal be processed, I'll move the thread to Radar forum to start with.

Rex

0 Cesar over 5 years ago in reply to Rex Chang

TI__Guru**** 151684 points

Hi,

The mmwave devices do not have the right interface to receive LVDS signals.

I will move this thread to the Processors Forum

thank you

Cesar

0 Rex Chang over 5 years ago in reply to Cesar

TI__Guru 50170 points

Cesar,

Thanks.

I'll try HSDC-HSSC forum.

Rex

0 Ikechukwu Anyiam over 5 years ago

TI__Mastermind 35130 points

Hi Min,

Are you trying to convert LVDS to LVTTL/LVCMOS? You can do so with LVDS receivers like the SN65LVDS386.

Regards,

I.K.

0 user6244022 over 5 years ago in reply to Ikechukwu Anyiam

Prodigy 100 points

Hi I.K. ,

The signal should be processed in MCU. I wonder if DSP can recieve and analyze the LVTTL signal.

In addition, the LVDS data rate is about 480Mbps. 4 data channels, 1 control channel and 1clock channel. The data is 8bit, representing for the amplitude of the pix.

Or DSP can recieve parallel signal after converting LVDS signal to parallel port?

Regards,

Min

0 Rex Chang over 5 years ago in reply to user6244022

TI__Guru 50170 points

Hi,

The devices in DSP team don't support LVDS signal input. Sorry.

Rex

0 Andy Peters over 5 years ago in reply to user6244022

Genius 3945 points

user6244022 said:

Hi I.K. ,

The signal should be processed in MCU. I wonder if DSP can recieve and analyze the LVTTL signal.

In addition, the LVDS data rate is about 480Mbps. 4 data channels, 1 control channel and 1clock channel. The data is 8bit, representing for the amplitude of the pix.

Or DSP can recieve parallel signal after converting LVDS signal to parallel port?

We do this in an FPGA.

0 user6244022 over 5 years ago in reply to Rex Chang

Prodigy 100 points

Hi Rex,

Is there any chips which can convert LVDS signal to parallel port?

Regards,

Min

0 Andy Peters over 5 years ago in reply to Ikechukwu Anyiam

Genius 3945 points

I.K. Anyiam said:

Hi Min,

Are you trying to convert LVDS to LVTTL/LVCMOS? You can do so with LVDS receivers like the SN65LVDS386.

LVDS is just the I/O standard, as opposed to TTL or CMOS or whatever.

The data output of many CMOS image sensors use LVDS but they are serial and sometimes DDR.

So the problem is that the sensor outputs need to be deserialized and bit-slip used to re-align the data words once parallel. And since there are a lot of outputs, they need to be buffered in memory. It's a job for an FPGA.

Arm-based microcontrollers

Arm-based microcontrollers forum

How to recieve LVDS signal using DSP chip or microcontroller?