HD66781 Datasheet, PDF (104/196 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
Gate pins
Panel position
n+1
Base image
RAM address
OSD image
RAM address
SCN
ODP0
BSA
OSA0
RAM write
Address
(HSA,HEA)
LCD
n+m
GS
ODP1
Base
image
NL+SCN
ODP2
BEA
OEA0
OSA1
OEA1
OSA2
OEA2
Window
Address
(VSA,VEA)
RAM Address, display position, drive position
Whenever making an OSD image setting, the following must be observed.
1. Set the OSD RAM area with OSAx, OEAx not to overlap one another.
2. Set the OSD position so that an OSD image does not overlap one another.
0 ≤ ODP0 ≤ ODP0+n x (OEA0 – OSA0+1) –1 <
ODP1 ≤ ODP1+ n x (OEA1 – OSA1+1) –1 <
ODP2 ≤ ODP2+ n x (OEA2 – OSA2+1) –1 ≤ NL
“n” is a magnification scale of an OSD image.
3. An OSD image is displayed 100% when the base image is turned off (BASEE = 0).
4. During the interlaced drive (FLD = 2’h3), the OSD and α blending functions are not available.
OSD Setting(OSD,ODF)
Address Set
RAM data write
OSD data write flow
Rev.0.5, July.31.2003, page 104 of 196