Renesas R61509V - Manual (Page 43)

R61509V Target Spec
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.