19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 868 of 1658
REJ09B0261-0100
19.3.13 Horizontal Cycle Register (HCR) The horizontal cycle register (HCR) sets the horizontal scan cycle.(period). The value is retained during power-on reset and manual reset.
R/W:
Internal update:
R/W:
Internal update:
161718192021222324252627282931 30Bit:
Initial value:
RRRRRRRRRRRRRRRR
0000000000000000
R/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WRRRRR
OOOOOOOOOOO
00000
HC
— —
01234567891011121315 14Bit:
Initial value:
Bit Bit Name
Initial
Value R/W
Internal
Update Description
31 to 11 All 0 R Reserved
These bits are always read as 0. The write value
should always be 0.
10 to 0 HC Undefined R/W Yes Horizontal Cycle
One horizontal scan period, including the
horizontal blanking interval, should be set in dot
clock units.
When in TV sync mode, this register should be
set so that the HSYNC period determined by this
register is the same as or greater than the
EXHSYNC period.