• Single density interlace displays the same picture in even and odd fields. On the other hand, double-dense interlace increases the vertical resolution by a factor of two by displaying different pictures (even and odd lines only, respectively) in even and odd fields.
  
• DIE = 1 enables double-dense interlace.
  
• The contents of the first display screen after changing the DIE are not guaranteed.
  
• In double-dense interlace, set FCM = FCT = 0 (1 cycle mode) to switch the field every 1/60 seconds.

DIE	DIL	Interlaced mode	Draw after next frame change
0	0	Non-interlaced / Single dense interlaced	All line drawing
0	1	Setting prohibited	−
1	0	Double dense interlace	Draw only even (EVEN) lines
1	1	Double dense interlace	Draw only odd (ODD) lines

Figure 4.1: Display of single dense interlace and double dense interlace