Rev. 1.0, 02/00, page 1077 of 1141
H'D213: OSD Format Register DFORM: OSD
0
0
1
0
R/W
2
0
R/W
3
1
4
1
—
1
—
5
7
—
—
DTMV
LDREQ
VACS
1
—
—
6
1
—
—
R/(W)*
—
—
Writing:
0
1
Reading:
0
1
OSD display update timing control bit
0
1
:
:
:
Master slave RAM transfer state bit
Master slave RAM transfer state bit
0
1
After the LDREQ bit is written to 1, data is transferred from master RAM to slave RAM
regardless of the Vsync signal (OSDV). The OSD display is updated simultaneously
with register* rewriting.
Note: * When transferring data using this setting, do not have the OSD display data
(Initial value)
After the LDREQ bit is written to 1, data is transferred from master RAM to slave RAM
synchronously with the Vsync signal (OSDV). After rewriting the register, the OSD
display is updated synchronously with the Vsync signal (OSDV).
Note: * The registers and register bits whose settings are reflected in the OSD display are the
row registers (CLINE), vertical display position register (VPOS), horizontal display
position register (HPOS), screen control register (DCNTL) except bit 13, and the RGBC,
YCOC, and DOBC bits of the digital output specification register (DOUT).
Data is not being transferred from master RAM to slave RAM (Initial value)
Data is being transferred from master RAM to slave RAM, or is being
prepared for transfer. After transfer is completed, this bit is cleared to 0
Requests abort of data transfer from master RAM to slave RAM
Requests transfer of data from master RAM to slave RAM.
After transfer is completed, this bit is cleared to 0
The CPU did not access OSDRAM during data transfer (Initial value)
The CPU accessed OSDRAM during data transfer; the access is invalid
Bit
Initial value
R/W