TDA3MV: TDA3 LATENCY

Hi,

We are checking the end-to-end latency from ISS Capture to DSS Display on TDA3

Conditions

• Camera: 30 fps

• Display: 30 fps

• Pipeline: ISS → DSS only

Understanding

• ISS provides a frame only after full frame capture → ~33 ms

• DSS displays frames on VSYNC and appears to use at least 2-frame buffering → ~66 ms

Question

Is it correct that the minimum inherent latency from ISS to DSS at 30 fps is about:

33 ms (ISS) + 66 ms (DSS) ≈ 99 ms

Also:

1. Does DSS always require at least 2-frame internally?

2. Is this latency expected behavior on TDA3, or is there a supported way to reduce it?

Regards,

Kim