GMS30C7201 Datasheet, PDF (144/352 Pages) Hynix Semiconductor – 60MHz operation frequency Low power consumption

LCD & VGA Controllers
11.8 VGA Timing 3 Register
The VGA Timing 3 Register is used to program the timing of the VGA border display. It
consists of 4 8-bit fields which specify the number of pixel clocks or line clocks after the start
of the porch periods that the border starts or stops. The border periods run ‘concurrently’ with
porch periods, so that the porch timings for LCD and VGA are the same. (There is no border on
LCD). Therefore, if programming LCD and VGA with the same timings, then the border values
would be the same.
11.8.1 VGA Horizontal border start register
This register contains the number of pixel clocks after the start of the horizontal back porch
period, that the border display starts, minus one.
11.8.2 VGA Horizontal border end register
This register contains the number of pixel clocks after the end of horizontal data ends that the
border color will be displayed for, minus one.
11.8.3 Vertical border start register
This register contains the number of lines after the vertical back porch begins that the border
display starts, minus one.
11.8.4 Vertical border end register
This register contains the number of lines after the vertical front porch begins that the border
will be displayed for.
Bit
7-0
15-8
23-16
31-24
Name
HBS
HBE
VBS
VBE
11.8.5 VGA border color register
Description
Horizontal border start
Horizontal border end
Vertical border start
Vertical border end
Table 11-7: Horizontal and Vertical Border Registers
Bit
Name Description
23-0
BCOL RGB 8:8:8 Border Colour
Table 11-8: VGA Border Colour Register
11-16
GMS30C7201 Data Sheet