TDA4VH-Q1: How can we disable Decompanding block

Ajay Jose

Part Number: TDA4VH-Q1

Tool/software:

Hi Experts,

it is mentioned that "send IR subtracted Bayer 2x2 to VISS"

my query is whether we should compand this Bayer 2*2 before sending to VISS module as VISS is expecting a companded input?

Or as an other approach can we disable decompanding block in the RAWFE block so that we can directly pass Bayer 2*2 to VISS module?

How to disable/Bypass the decompanding logic in RAWFE?

Thanks

Ajay Jose

0 Gang Hua over 2 years ago

Hi Ajay,

Ajay Jose said:
my query is whether we should compand this Bayer 2*2 before sending to VISS module as VISS is expecting a companded input?

It depends on the bit depth of your 2x2 images and DDR BW concerns.

VISS can take 12-bit companded and packed input format from DDR, which is more efficient for DDR BW.

0 Ajay Jose over 2 years ago in reply to Gang Hua

Ok.Is it possible to disable/bypass the decompanding block? may be by setting same input and output knee points in dcc tool

0 Gang Hua over 2 years ago in reply to Ajay Jose

Yes, decompanding can be programed differently for various input bit-depth.

You may refer to the FAQ below.

What is the linear bit-depth of your sensor output raw image?

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