HD66781 Datasheet, PDF (25/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
Relation between GRAM data and Display data (SS=0, BGR=0)
The following figure illustrates the relationship between data on GRAM and display data through each
interface.
80 system 18-bit interface (1 transmission/pixel)
GRAM data
DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RGB Assignment R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
Output pin
S(3n+1)
S(3n+2)
S(3n+3)
Note 1 : n = Lower 8 bits of address (0 ~ 239)
Note 2 : 262,144 color display
80 system 16-bit interface (1 transmission/pixel)
GRAM data
DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10
DB DB DB DB DB DB DB DB
87 654321
RGB Assignment _{R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 G3 G2 B1 B0}
Output pin
S(3n+1)
S(3n+2)
S(3n+3)
Note 1 : n = Lower 8 bits of address (0 ~ 239)
Note 2 : 65,536 color display
80 system 16-bit interface (2 transmissions/pixel) 1
GRAM data
1st transmission
2nd transmission
DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10 8 7 6 5 4 3 2 1 17 16
RGB Assignment R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
Output pin
S(3n+1)
S(3n+2)
S(3n+3)
Note 1 : n = Lower 8 bits of address (0 ~ 239)
Note 2 : 262,144 color display
80 system 16-bit interface (2 transmissions/pixel) 2
1st transmission
2nd transmission
GRAM data
DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB
2 1 17 16 15 14 13 12 11 10 8 7 6 5 4 3 2 1
RGB Assignment R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
Output pin
S(3n+1)
S(3n+2)
S(3n+3)
Note 1 : n = Lower 8 bits of address (0 ~ 239)
Note 2 : 262,144 color display
80-system 18/16-bit interface (SS = 0, BGR = 0)
Rev.0.5, July.31.2003, page 25 of 196