Svsp Video Output Module - Analog Devices ADV8005 Hardware Reference Manual

UG-707
svsp_ex_mem_data_format[1:0], Secondary VSP Map, Address 0xE611[7:6]
This signal is used to set the data format in external memory.
Function
svsp_ex_mem_data_format[
1:0]
01
11
3.3.3.

SVSP Video Output Module

Figure 66 shows the structure of the VOM in the SVSP. This is a much simpler structure than that of the VOM in the PVSP.
The SVSP VOM offers the following functions:
•
Pixel unpacker: reads field/frame from external memory and unpacks memory word to video pixel information
•
VOM cropper: reads cropped images from external memory
•
Output port: generates output timing and output video
Register update protection is provided in the ADV8005. Refer to Section
svsp_lock_vom, Secondary VSP Map, Address 0xE610[4]
'This bit is used to lock the Video Output Module (VOM). If the Secondary VSP is running and this bit is set to 1, the VOM will be locked to
the current register setting to display the last frame. The Secondary 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
svsp_lock_vom
0 (default)
1
Note: This register should be used only as part of the gentle reboot protocol. Refer to Section
svsp_update_vom, Secondary VSP Map, Address 0xE610[3]
Registers related to the VOM can be updated only when this bit is set to 0. All new register settings will be updated by VOM in next frame
after this bit is set back to 1.
Function
svsp_update_vom
0 (default)
1
Description
YCbCr-8b-8b-8b
YCbCr-4:2:2-8b
Video Output Module (VOM) Video Output Module (VOM)
VOM VOM
Cropper Cropper
Pixel Pixel
FFS FFS
Unpacker Unpacker
Write to Write to
DDR2 DDR2
Figure 66: SVSP Video Output Module (VOM)
Description
Unlock VOM
Lock VOM
Description
Do not update VOM
Update VOM
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ADV8005 Hardware Reference Manual
Output Output
Video Video
Output Output
Port Port
3.4 for more details regarding the update of the various VSP registers.
3.4.3 for more details.