ADV8003 Hardware Manual
Rev. B, August 2013
152
Output
Input
Frame Rate 50 Hz
59.94/60 Hz
23.97/24 Hz 25/30 Hz
Frame rate
Timing
576p/720p/1080
p
480p/720p/1080p 720p/1080p
/4kx2k
720p/1080p
/4kx2k
23.97/24/25/30
Hz
720/1080p 0.1~0.8
0.1~0.8
0.1~1.3
0.1~1.3
1.
x.x means x.x times the input video field/frame
2.
A~B means frame latency is not a fixed value, it varies between A and B
3.
If cadence detection is disabled, this value should be 0.3~1.4 with setting
to 0, otherwise is 0.3~3.4
4.
If progressive cadence detection is disabled, this value should be 0.3~1.4 with setting
to 0, otherwise, it is 0.3~3.4
When crop or album mode is enabled, frame latency will be different from what is listed in
. In this case, the user can use the
following methods to measure frame latency:
are read only registers. Their values are real-time frame and HSync latency
between input and output video.
Frame latency may vary within a range; the
readback register indicates the maximum frame latency, while
indicates the minimum frame latency. If
are cleared.
If asserting
, the PVSP will monitor the values in
, then record their maximum and minimum values in
. Both of these signals are 15 bits wide – the highest 3 bits are the frame latency and the lowest 12 bits are the
HSync latency. Note that it will take several seconds for PVSP to find the maximum and minimum frame/HSync latency.
In a normal case (not game mode), the PVSP’s input video and output video latency are consistent.
pvsp_frc_latency_measure_en
, Primary VSP Map,
Address 0xE8F0[6]
This bit is used to enable frame latency measuring. The results are recorded in pvsp_rb_max_latency and pvsp_rb_min_latency.
Function
pvsp_frc_latency_meas
ure_en
Description
0
Disable frame latency measuring
1
Enable frame latency measuring
pvsp_rb_frame_latency[2:0]
, Primary VSP Map,
Address 0xE870[6:4] (Read Only)
This signal is used to indicate the real time VSync latency.
Function
pvsp_rb_frame_latency
[2:0]
Description
0xXXX
Number of frame latency
pvsp_rb_hsync_latency[11:0]
, Primary VSP Map,
Address 0xE875[7:0]; Address 0xE876[7:4] (Read Only)
This signal is used to indicate the real time HSync latency.
Summary of Contents for ADV8003
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