參數(shù)資料
型號(hào)： GM2120
廠商： Electronic Theatre Controls, Inc.
英文描述： XGA/SXGA LCD Controller
中文描述： 的XGA / SXGA LCD控制器
文件頁(yè)數(shù)： 39/51頁(yè)
文件大?。?/td> 1379K
代理商： GM2120
***
Genesis Microchip Confidential ***
gm5110/20 Preliminary Data Sheet
June 2002
32
C5110-DAT-01C
could contain more than 32 1-bit per pixel cells, 100 2-bit per pixel cells, and 16 4-bit per
pixel cells. Of course, different numbers of each type can also be used.
4.13.2 Color Look-up Table (LUT)
Each pixel of a displayed cell is resolved to an 8-bit color code. This selected color code is
then transformed to a 24-bit value using a 256 x 24-bit look up table. This LUT is stored in
an on-chip RAM that is separate from the OSD RAM. Color index value 0x00 is reserved for
transparent OSD pixels.
4
4
.
.
1
1
4
4
O
O
n
n
-
-
C
C
h
h
i
i
p
p
M
M
i
i
c
c
r
r
o
o
c
c
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o
n
n
t
t
r
r
o
o
l
l
l
l
e
e
r
r
(
(
O
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C
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)
)
The gm5110/20 on-chip microcontroller (OCM) serves as the system microcontroller. It
programs the gm5110/20 and manages other devices in the system such as the keypad, the
back light and non-volatile RAM (NVRAM) using general-purpose input/output (GPIO)
pins.
The OCM can operate in two configurations, Standalone configuration and Full-Custom
configuration, as illustrated in Figure 23.
Factory
Port
Factory
Port
On-chip ROM
:
Auto mode detection
Auto-configuration
Standard high-quality OSD menus
Factory test / calibration functions
Analog
RGB
Input
DVI
Input
ROM
NVRAM
OCM
gm5110/20
OCM
gm5110/20
PROM
Analog
RGB
Input
DVI
Input
NVRAM
Output to
LCD Panel
Output to
LCD Panel
Configuration settings in NVRAM
:
OSD Colors, Logo and other configuration
Panel Parameters
Additional input modes
Code patches
Figure 23A - Standalone Configuration
(No external ROM)
User settings in NVRAM
:
Brightness/contrast settings, etc
On mode-by-mode basis
External ROM
:
Contains firmware code and data
for all firmware functions
Figure 23.
OCM Full-Custom Figure 23B - Full-Custom Configuration
(Program and Data stored in external ROM)
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