Renesas R61509V Manuel D’Utilisation

Rev. 0.11 April 25, 2008, page 43 of 181  

 

BGR: Reverses the order from RGB to BGR in writing 18-bit pixel data in the GRAM. 

BGR = 0: 

Write data in the order of RGB to the GRAM.   

BGR = 1: 

Reverse the order from RGB to BGR in writing data to the GRAM. 

DFM: In combination with the TRI setting, DFM sets the format to develop 16-/8-bit data to 18-bit data 
when using either 16- or 8-bit bus interface.  Make sure to set DFM = 0 when not transferring data via 16-
bit or 8-bit interface. Set DFM in accordance with selected interface and image data format in RAM write 
operation.  
     DFM=0: 18bpp (R:G:B = 6:6:6), DFM=1: 16bpp (R:G:B = 5:6:5)   

TRI: Selects the format to transfer data bits via 16-bit or 8-bit interface. 

In 8-bit interface operation, 

TRI = 0: 16-bit RAM data is transferred in two transfers. 
TRI = 1: 18-bit RAM data is transferred in three transfers. 

In 16-bit bus interface operation, 

TRI = 0: 16-bit RAM data is transferred in one transfer. 
TRI = 1: 18-bit RAM data is transferred in two transfers. 

Make sure TRI = 0 when not transferring data via 16- or 8-bit interface.  Also, set TRI = 0 during read 
operation.