ISS HW interface question

RickyXia

Dear TI Tech Support,

I have a hardware interface related question on DM8148. Your kind answer will be highly appreciated.

In our video camera system, we use an FPGA to do ISP (image signal processing) and a DM8148 to do video analysis. The interface between the FPGA and DM8148 is generic YCbCr 16-bit parallel. My question to you is: Does the DM8148 expect the blanking intervals b/w successive HSYNCs as fixed or can they vary? How much would the DM8148 be able to tolerate these variations? If any of your documents mentioned about this please point it out for me.

Thanks a lot,

Ricky

over 13 years ago

0 Renjith Thomas over 13 years ago

Guru 31670 points

Ricky,

DM8148 ISS is similar to OMAP4430 ISS susbsystem. You can check the documentation whether ISS supports your interface. Also, why do you need FPGA for ISP, why can't you use ISS itself for ISP?

0 HardikShah over 13 years ago in reply to Renjith Thomas

TI__Mastermind 20245 points

Hi,

You can use HDVPSS VIP capture port as well in case you want to push data through parallel interface. It can accept BT656 and BT1120 type of interfaces.

Regards,

Hardik Shah

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ISS HW interface question