Vertical Blanking Interval - Analog Devices ADV8003 Hardware Manual

sd_y_min_value, Encoder Map, Address 0xE48A[6]
This bit is used to configure the SD minimum luma value.
Function
sd_y_min_value
0 
1

8.5. VERTICAL BLANKING INTERVAL

The ADV8003 is capable of accepting input VBI data (for example, CGMS, WSS, and CCAP) in SD, ED and HD modes. If VBI is disabled,
for SD mode, see vbi_open, for HD mode, see vbi_data_en. VBI data is not present at the encoder output and the entire VBI is blanked.
These control bits are valid in all modes.
For SMPTE 293M (525p), VBI data can be inserted on Lines 13 to 42 of each frame. For ITU-R BT.1358 (625p), VBI data can be inserted
on Lines 6 to 43 For NTSC, VBI data can be inserted on Lines 10 to 20. For PAL, VBI data can be inserted on Lines 7 to 22.
If CGMS is enabled and VBI is disabled, the CGMS data is available at the output.
vbi_open, Encoder Map, Address 0xE483[4]
This bit is used to enable data on the Vertical Blanking Interval (VBI) to be accepted as valid data. This is valid for SD video data only.
Function
vbi_open
1
0 
vbi_data_en, Encoder Map, Address 0xE483[4]
This bit is used to enable data on the Vertical Blanking Interval (VBI) to be accepted as valid data. This is valid for SD video data only.
Function
vbi_data_en
1
0 
Rev. B, August 2013
Description
-40IRE
-7.5IRE
Description
Enabled
Disabled
Description
Enabled
Disabled
345
ADV8003 Hardware Manual