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Image display area select bit : Display area select bit (DASEL), bit 1
Specify the image display area. Valid only when the EXBGEN bit is 1. 

 DASEL 
 Processing 
 0 
 Display images only in the settings display area 
 1 
 Display image in all standard display areas

External screen enable bit : EXBG enable bit (EXBGEN), bit 0
Controls input of external screen data. 

 EXBGEN 
 Processing 
 0 
 Do not enter external screen data  
 1 
 Enter external screen data

● Screen status (read only)

External latch flag : External latch flag (EXLTFG), bit 9

Indicates whether the HV counter value is latched in the HV counter register by an external signal. When the screen status register is read, it is cleared to 0. 

 EXLTFG 
 HV counter value status 
 0 
 Not yet latched in register 
 1 
 latched in register

External synchronization flag : External SYNC flag (EXSYFG), bit 8
Indicates whether the internal circuit is synchronized by an external synchronization signal. When the screen status register is read, it is cleared to 0. 

 EXSYFG 
 External synchronization state 
 0 
 not sync 
 1 
 Internal circuit synchronized

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