SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
Figure 9-59 shows VBLNK from Group 1 and HBLNK from Group 2 being used. In this case, set USE_ACTVID_HSYNC_N=’0’ and DISCRETE_BASIC_MODE=’0’. Vertical Ancillary lines will be sent to the Vertical Ancillary output at Active Video will be sent out the Active Video output.
If DISCRETE_BASIC_MODE=’1’ is chosen, all lines including vertical blanking ones will be sent to the Active Video buffer. Since a line is delineated by HBLNK and HBLNK toggles in vertical blanking as well as active video, every incoming pixel will be save to the Active Video buffer.
Figure 9-59 vblnk and hblnk