User`s manual

73
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
Fig. 8.11.7 OSD Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
OSD control register 2 (OC2) [Address 0215
16]
B Name Functions
OSD Control Register 2
0, 1
2 R, G, B signal output
selection bit(OC22)
3
5 Window/blank
selection bit 1
(horizontal) (OC25)
Solid space output bit
(OC23)
0: OUT1 output
1: OUT2 output
0: Digital output
1: Analog output (4 gradations)
4
Horizotal
window/blank
coutrol bit (OC24)
0: OFF
1: ON
b1 b0 Layer 1 Layer 2
0 0 CC, OSD, CDOSD
0 1 CC, OSD CDOSD
1 0 CC, CDOSD OSD
1 1 CC CDOSD
OSD
0: Horizontal blank function
1: Horizontal window function
6 Window/blank
selection bit 2
(vertical) (OC26)
0: Vertical blank function
1: Vertical window function
7 OSD interrupt
request selection bit
(OC27)
R
W
0
R
W
0
R
W
0
R
W
0
R
W
0
R
W
0
R
W
0
R
W
0: At completion of layer 1 block display
1: At completion of layer 2 block display
Display layer
selection bits
(OC20, OC21)
Note: When setting bit 1 of the OSD port control register to “1,” the value which is
converted from the 4-adjustment-level analog to the 2-bit digital is output
regardless of this bit value as follows : the high-order bit (R1, G1 and B1) is
output from pins P5
2, P53 and P54, and the low-order bit is (R0, G0 and B0)
output from pins P1
7, P15 and P16. And besides, when not using OSD
function, the low-power dissipation can realize by setting this bit to “0.”
(See note)
After reset