Pvsp Video Output Module - Analog Devices ADV8005 Hardware Reference Manual

UG-707
3.2.3.

PVSP Video Output Module

Figure 57 shows the structure of the PVSP VOM. The direction arrow inside
VOM but gives a clear overview of each processing block.
The VOM has the following main features:
•
Pixel unpacker: this module reads the field/frame from external memory and unpacks memory words to video pixel information
•
VOM cropper: crops the image read from external memory
•
De-interlacer: converts interlaced video to progressive video
•
CUE correction: filtering for Color Upsampling Error
•
Noise reduction: removes random, mosquito, and block noise
•
Detail and edge sharpness enhancement
•
Scaler: scales video to target resolution
•
Output port: generates output timing and output video
Register update protection is provided in the ADV8005. Refer to Section
pvsp_lock_vom, Primary VSP Map, Address 0xE828[3]
This bit is used to lock the Video Output Module (VOM). If the Primary VSP is running and this bit is set to 1, the VOM will be locked to a
current register setting to display the last frame. The Primary VSP registers can be configured safely in this state. All new register settings
will be updated after this bit is set back to 0.
Function
pvsp_lock_vom
0 (default)
1
Note: This register should be used only as part of the gentle reboot protocol. Refer to Section
Video Output Module (VOM) Video Output Module (VOM)
(Block/Mosquito/Random) (Block/Mosquito/Random)
CUE CUE
Correction Correction
De-interlacer De-interlacer
VOM VOM
Cropper Cropper
Pixel Pixel
UnPacker UnPacker
Read from Read from
DDR2 DDR2
Figure 57: PVSP Video Output Module
Description
Unlock VOM
Lock VOM
Rev. A | Page 118 of 317
ADV8005 Hardware Reference Manual
Figure 57 does not capture the real processing order inside the
Noise Noise
Reduction Reduction
Sharpness Sharpness
Scaler Scaler
Output Output
Video Video
Output Port Output Port
3.4 for more details regarding how to update the various VSP registers.
3.4.3 for more details.