6V7 Datasheet, PDF (184/298 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M306V7MG/MH/MJ/MJA-XXXFP, M306V7FG/FH/FJ/FJAFP
Display example of layer 1 = “HELLO,” layer 2 = “CH5”
HELL^CO^H5
HELLO^CH5
HELL^CO^H5
Logical sum (OR) of
layer 1’s color and
layer 2’s color (See note)
OC17 = “0,” OC16 = “0”
Layer 1’s color has priority
OC17 = “0”, OC16 = “1”
Layer 2’s color has priority
OC17 = “1,” OC16 = “0”
Note: The logical sum (OR) of layer mixing is not OR of the color palette registers’ contents (color), but
that of color pallet registers’ numbers (i).
Example) When the logical sum (OR) is performed on the color palettes 1 and 4;
the number 1 (00012) and number 4 (01002) are ORed and it results in the number 5
(01012). That is, the contents (color) of color palette register 5 is output. The color of
color palette register 5 is output in the ORed part, regardless of colors of color palettes
registers 1 and 4.
Figure 2.16.6 Display example of triple layer OSD
OSD control register 2
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
OC2
Address
020316
When reset
0016
Bit symbol
Bit name
Function
OC20
OC21
OC22
Display layer
selection bits
R, G, B signal output
selection bit
b1 b0
Layer 1
0 0 CC, OSDS/L/P, CDOSD
0 1 CC, OSDS/L/P
1 0 CC, OSDP, CDOSD
1 1 CC, OSDP
0: Digital output
1: Analog output (8 gradations)
Layer 2
CDOSD
OSDS/L
CDOSD
OSDS/L
OC23
OC24
OC25
OC26
OC27
Solid space output bit 0: OUT1 output
1: OUT2 output
Horizontal
window/blank control
bit
Window/blank
selection bit 1
(horizontal)
0: OFF
1: ON
0: Horizontal blank function
1: Horizontal window function
Window/blank
selection bit 2
(vertical)
0: Vertical blank function
1: Vertical window function
OSD interrupt
0: At completion of layer 1 block display
request selection bit 1: At completion of layer 2 block display
RW
Figure 2.16.7 OSD control register 2
Rev.1.00 May 18, 2004 page 184 of 296