Low Latency Mode; Table 25: Frame Latency In Low Latency Mode - Analog Devices ADV8003 Hardware Manual

3.2.1.7. Low Latency Mode

Game mode has a very small frame latency but some processing functions cannot be supported in this mode. ADV8003 provides another
mode, low latency mode, which can support frame rate change, scaling, crop and album mode.
To enable low latency mode,
Frame latency in low latency mode is listed in
Input
Frame rate
50 Hz
59.94/60 Hz
23.97/24/25/30
Hz
The following functions are not supported In low latency mode:
•
Motion adaptive de-interlacing (autodisabled)
• Cadence detection (autodisabled)
•
Random noise reduction (autodisabled)
• CUE correction (autodisabled)
pvsp_frc_low_latency_mode, Primary VSP Map, Address 0xE84D[2]
This bit is used to enable low latency mode.
Function
pvsp_frc_low_latency_
mode
0 
1
Rev. B, August 2013
pvsp_frc_low_latency_mode
Table 25, which shows the maximum frame latency is 1.4 x frame.

Table 25: Frame Latency in Low Latency Mode

Output Frame Rate 50 Hz
Timing 576p/720p/1080
p
576i 0.3~1.3
1080i
576p 0.3~1.3
720p
1080p
480i 0.3~1.3
1080i
480p 0.3~1.3
720p
1080p
720/1080p 0.3~0.8
Description
Disable low latency mode
Enable low latency mode
should be set to 1.
59.94/60 Hz
480p/720p/1080p 720p/1080p
0.3~1.3
0.3~1.3
0.3~1.3
0.3~1.3
0.3~0.8
154
ADV8003 Hardware Manual
23.97/24 Hz 25/30 Hz
720p/1080p
/4kx2k /4kx2k
0.3~1.4 0.3~1.4
0.3~1.4 0.3~1.4
0.3~1.4 0.3~1.4
0.3~1.4 0.3~1.4
0.3~1.3 0.3~1.3